DAEWOO T-100 BL3SECTION 1FENGINE CONTROLSCAUTION:DisconnectthenegativebatterycabIebeforeremovingorinstaIIinganyeIectricaIunitorwhenatooIorequipmentcouIdeasiIycomeincontactwithexposedeIectricaIterminaIs.DisconnectingthiscabIewiIIheIppreventpersonaIinjuryanddamagetothevehicIe.TheignitionmustaIsobeinLOCKunIessotherwisenoted.TABLE OF CONTENTSSpecifications 1F-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Scan TooI Data TabIe 1F-4 . . . . . . . . . . . . . . . . . . . . . .Fastener Tightening Specifications 1F-5 . . . . . . . . . . .Schematic and Routing Diagrams 1F-6 . . . . . . . . . . .ECM Wiring Diagram (1.3L and 1.5L SOHC -1 of 5) (IEFI-6 ECM) 1F-6 . . . . . . . . . . . . . . . . . . . . .ECM Wiring Diagram (1.3L and 1.5L SOHC -2 of 5) (IEFI-6 ECM) 1F-7 . . . . . . . . . . . . . . . . . . . . .ECM Wiring Diagram (1.3L and 1.5L SOHC -3 of 5) (IEFI-6 ECM) 1F-8 . . . . . . . . . . . . . . . . . . . . .ECM Wiring Diagram (1.3L and 1.5L SOHC -4 of 5) (IEFI-6 ECM) 1F-9 . . . . . . . . . . . . . . . . . . . . .ECM Wiring Diagram (1.3L and 1.5L SOHC -5 of 5) (IEFI-6 ECM) 1F-10 . . . . . . . . . . . . . . . . . . . .ECM Wiring Diagram (1.3L SOHC and1.6L DOHC - 1 of 5) (ITMS-6F ECM) 1F-11 . . . . .ECM Wiring Diagram (1.3L SOHC and1.6L DOHC - 2 of 5) (ITMS-6F ECM) 1F-12 . . . . .ECM Wiring Diagram (1.3L SOHC and1.6L DOHC - 3 of 5) (ITMS-6F ECM) 1F-13 . . . . .ECM Wiring Diagram (1.3L SOHC and1.6L DOHC - 4 of 5) (ITMS-6F ECM) 1F-14 . . . . .ECM Wiring Diagram (1.3L SOHC and1.6L DOHC - 5 of 5) (ITMS-6F ECM) 1F-15 . . . . .Connector End View 1F-16 . . . . . . . . . . . . . . . . . . . . . .Component Locator 1F-20 . . . . . . . . . . . . . . . . . . . . . . .Component Locator (SOHC) 1F-20 . . . . . . . . . . . . . . .Component Locator (DOHC) 1F-21 . . . . . . . . . . . . . . .Diagnosis 1F-22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .TroubIe Code Diagnosis 1F-22 . . . . . . . . . . . . . . . . . . . . .CIearing TroubIe Codes 1F-22 . . . . . . . . . . . . . . . . . . .IdIe Learn Procedure 1F-22 . . . . . . . . . . . . . . . . . . . . .Diagnostic System Check (1.3L and1.5L SOHC IEFI-6) 1F-22 . . . . . . . . . . . . . . . . . . . . .Diagnostic System Check (1.3L SOHC and1.6L DOHC ITMS-6F) 1F-24 . . . . . . . . . . . . . . . . . . .Diagnostic Aids 1F-26 . . . . . . . . . . . . . . . . . . . . . . . . . .Engine Cranks But WiII Not Start (1.3L and1.5L SOHC IEFI-6) 1F-27 . . . . . . . . . . . . . . . . . . . . .Engine Cranks But WiII Not Start(1.3L SOHC and 1.6L DOHC ITMS-6F) 1F-33 . . .No Service Engine Soon Lamp(1.3L and 1.5L SOHC IEFI-6) 1F-40 . . . . . . . . . . . .No Service Engine Soon Lamp(1.3L SOHC and 1.6L DOHC ITMS-6F) 1F-44 . . .WiII Not FIash Service Engine Soon Lamp(1.3L and 1.5L SOHC IEFI-6) 1F-48 . . . . . . . . . . . .WiII Not FIash Service Engine Soon Lamp(1.3L SOHC and 1.6L DOHC ITMS-6F) 1F-50 . . .FueI System Pressure Test 1F-52 . . . . . . . . . . . . . . . .FueI Pump ReIay Circuit Check(1.3L and 1.5L SOHC IEFI-6) 1F-56 . . . . . . . . . . . .FueI Pump ReIay Circuit Check(1.3L SOHC and 1.6L DOHC ITMS-6F) 1F-60 . . .ManifoId AbsoIute Pressure Check(1.3L and 1.5L SOHC IEFI-6) 1F-64 . . . . . . . . . . . .ManifoId AbsoIute Pressure Check(1.3L SOHC and 1.6L DOHC ITMS-6F) 1F-66 . . .Park/NeutraI Switch (1.3L and1.5L SOHC IEFI-6) 1F-68 . . . . . . . . . . . . . . . . . . . . .Park/NeutraI Switch(1.3L SOHC and 1.6L DOHC ITMS-6F) 1F-70 . . .IdIe Air ControI System Check(1.3L and 1.5L SOHC IEFI-6) 1F-72 . . . . . . . . . . . .IdIe Air ControI System Check(1.3L SOHC and 1.6L DOHC ITMS-6F) 1F-76 . . .Ignition System Check(1.3L and 1.5L SOHC IEFI-6) 1F-80 . . . . . . . . . . . .Ignition System Check(1.3L SOHC and 1.6L DOHC ITMS-6F) 1F-84 . . .Engine CooIing Fan Circuit Check -Without A/C (1.3L and1.5L SOHC IEFI-6) 1F-88 . . . . . . . . . . . . . . . . . . . . .Engine CooIing Fan Circuit Check -Without A/C (1.3L SOHC and1.6L DOHC ITMS-6F) 1F-92 . . . . . . . . . . . . . . . . . . .Engine CooIing Fan Circuit Check - With A/C(1.3L and 1.5L SOHC IEFI-6) 1F-96 . . . . . . . . . . . .Engine CooIing Fan Circuit Check - With A/C(1.3L SOHC and 1.6L DOHC ITMS-6F) 1F-104 . .FueI Injector BaIance Test 1F-111 . . . . . . . . . . . . . . . .DTC 1 TCMPWM Low (1.3L SOHC and1.6L DOHC ITMS-6F) 1F-112 . . . . . . . . . . . . . . . . . .DTC 2 TCMPWM High (1.3L SOHC and1.6L DOHC ITMS-6F) 1F-114 . . . . . . . . . . . . . . . . . .DTC 3 Fan Number Two Low(1.3L SOHC and 1.6L DOHC ITMS-6F) 1F-116 . .1F -- 2 ENGINE CONTROLSDAEWOO T-100 BL3DTC 4 Fan Number Two High(1.3L SOHC and 1.6L DOHC ITMS-6F) 1F-120 . .DTC 5 Fan Number One Low(1.3L SOHC and 1.6L DOHC ITMS-6F) 1F-122 . .DTC 6 Fan Number One High(1.3L SOHC and 1.6L DOHC ITMS-6F) 1F-124 . .DTC 7 EGR On/Off SoIenoid Low (1.3LSOHC and 1.6L DOHC ITMS-6F) 1F-126 . . . . . . .DTC 8 EGR On/Off SoIenoid High (1.3LSOHC and 1.6L DOHC ITMS-6F) 1F-128 . . . . . . .DTC 12 No PuIse Reference 1F-130 . . . . . . . . . . . . . .DTC 13 Oxygen Sensor Not ToggIing(1.3L and 1.5L SOHC IEFI-6) 1F-132 . . . . . . . . . . .DTC 13 Oxygen Sensor Not ToggIing (1.3LSOHC and 1.6L DOHC ITMS-6F) 1F-136 . . . . . . .DTC 14 CooIant Temperature High(1.3L and 1.5L SOHC IEFI-6) 1F-140 . . . . . . . . . . .DTC 14 CooIant Temperature High(1.3L SOHC and 1.6L DOHC ITMS-6F) 1F-144 . .DTC 15 CooIant Temperature Low(1.3L and 1.5L SOHC IEFI-6) 1F-148 . . . . . . . . . . .DTC 15 CooIant Temperature Low(1.3L SOHC and 1.6L DOHC ITMS-6F) 1F-152 . .DTC 16 Knock Sensor FaiIure (1.3LSOHC and 1.6L DOHC ITMS-6F) 1F-156 . . . . . . .DTC 17 Injector Shorted to Ground/Battery(1.3L SOHC and 1.6L DOHC ITMS-6F) 1F-158 . .DTC 18 DSNEF ControI Error FaiIure(1.3L SOHC and 1.6L DOHC ITMS-6F) 1F-162 . .DTC 19 58X SignaI Error (A and B)(1.3L and 1.5L SOHC IEFI-6) 1F-164 . . . . . . . . . . .DTC 19 58X SignaI Error (A and B)(1.3L SOHC and 1.6L DOHC ITMS-6F) 1F-166 . .DTC 21 ThrottIe Position Sensor High(1.3L and 1.5L SOHC IEFI-6) 1F-168 . . . . . . . . . . .DTC 21 ThrottIe Position Sensor High(1.3L SOHC and 1.6L DOHC ITMS-6F) 1F-170 . .DTC 22 ThrottIe Position Sensor Low(1.3L and 1.5L SOHC IEFI-6) 1F-172 . . . . . . . . . . .DTC 22 ThrottIe Position Sensor Low(1.3L SOHC and 1.6L DOHC ITMS-6F) 1F-174 . .DTC 23 ManifoId Air Temperature High(1.3L and 1.5L SOHC IEFI-6) 1F-176 . . . . . . . . . . .DTC 23 ManifoId Air Temperature High(1.3L SOHC and 1.6L DOHC ITMS-6F) 1F-178 . .DTC 24 VehicIe Speed Sensor Error -ManuaI TransaxIe (1.3L and1.5L SOHC IEFI-6) 1F-180 . . . . . . . . . . . . . . . . . . . .DTC 24 VehicIe Speed Sensor Error -ManuaI TransaxIe (1.3L SOHC and1.6L DOHC ITMS-6F) 1F-182 . . . . . . . . . . . . . . . . . .DTC 24 VehicIe Speed Sensor Error -Automatic TransaxIe (1.3L and1.5L SOHC IEFI-6) 1F-184 . . . . . . . . . . . . . . . . . . . .DTC 24 VehicIe Speed Sensor Error -Automatic TransaxIe (1.3L SOHC and1.6L DOHC ITMS-6F) 1F-186 . . . . . . . . . . . . . . . . . .DTC 25 ManifoId Air Temperature Low(1.3L and 1.5L SOHC IEFI-6) 1F-188 . . . . . . . . . . .DTC 25 ManifoId Air Temperature Low(1.3L SOHC and 1.6L DOHC ITMS-6F) 1F-190 . .DTC 27 Air Conditioning PressureSensor High Error (1.3L and1.5L SOHC IEFI-6) 1F-192 . . . . . . . . . . . . . . . . . . . .DTC 27 Air Conditioning PressureSensor High Error (1.3L SOHC and1.6L DOHC ITMS-6F) 1F-194 . . . . . . . . . . . . . . . . . .DTC 29 FueI Pump ReIay Short To Ground(1.3L SOHC and 1.6L DOHC ITMS-6F) 1F-196 . .DTC 32 FueI Pump ReIay Short To Battery(1.3L SOHC and 1.6L DOHC ITMS-6F) 1F-198 . .DTC 33 ManifoId AbsoIute PressureSensor High (1.3L and1.5L SOHC IEFI-6) 1F-200 . . . . . . . . . . . . . . . . . . . .DTC 33 ManifoId AbsoIute PressureSensor High (1.3L SOHC and1.6L DOHC ITMS-6F) 1F-204 . . . . . . . . . . . . . . . . . .DTC 34 ManifoId AbsoIute Pressure SensorLow (1.3L and 1.5L SOHC IEFI-6) 1F-208 . . . . . . .DTC 34 ManifoId AbsoIute PressureSensor Low (1.3L SOHC and1.6L DOHC ITMS-6F) 1F-212 . . . . . . . . . . . . . . . . . .DTC 35 IdIe Air ControI Error(1.3L and 1.5L SOHC IEFI-6) 1F-216 . . . . . . . . . . .DTC 35 IdIe Air ControI Error(1.3L SOHC and 1.6L DOHC ITMS-6F) 1F-220 . .DTC 36 Exhaust Gas RecircuIation Error(1.3L and 1.5L SOHC IEFI-6) 1F-224 . . . . . . . . . . .DTC 41 EIectronic Spark Timing "B"Shorted to Battery (1.3L and1.5L SOHC IEFI-6) 1F-226 . . . . . . . . . . . . . . . . . . . .DTC 41 EIectronic Spark Timing "B"Shorted to Battery (1.3L SOHC and1.6L DOHC ITMS-6F) 1F-228 . . . . . . . . . . . . . . . . . .DTC 42 EIectronic Spark Timing "A"Shorted to Battery (1.3L and1.5L SOHC IEFI-6) 1F-230 . . . . . . . . . . . . . . . . . . . .DTC 42 EIectronic Spark Timing "A"Shorted to Battery (1.3L SOHC and1.6L DOHC ITMS-6F) 1F-232 . . . . . . . . . . . . . . . . . .DTC 44 Oxygen Sensor Lean (1.3L and1.5L SOHC IEFI-6) 1F-234 . . . . . . . . . . . . . . . . . . . .DTC 44 Oxygen Sensor Lean(1.3L SOHC and 1.6L DOHC ITMS-6F) 1F-236 . .DTC 45 Oxygen Sensor Rich(1.3L and 1.5L SOHC IEFI-6) 1F-238 . . . . . . . . . . .DTC 45 Oxygen Sensor Rich(1.3L SOHC and 1.6L DOHC ITMS-6F) 1F-240 . .DTC 49 Battery VoItage Too High(1.3L SOHC and 1.6L DOHC ITMS-6F) 1F-242 . .DTC 51 ECM Error (Checksum orKKPGMID Error) (1.3L and1.5L SOHC IEFI-6) (1.3L SOHC and1.6L DOHC ITMS-6F) 1F-243 . . . . . . . . . . . . . . . . . .ENGINE CONTROLS 1F -- 3DAEWOO T-100 BL3DTC 53 ECM ImmobiIized Error(1.3L and 1.5L SOHC IEFI-6)(1.3L SOHC and 1.6L DOHC ITMS-6F) 1F-244 . .DTC 54 CO Adjust Error(1.3L and 1.5L SOHC IEFI-6) 1F-246 . . . . . . . . . . .DTC 54 CO Adjust Error(1.3L SOHC and 1.6L DOHC ITMS-6F) 1F-248 . .DTC 55 EEPROM or Config Reg Error(1.3L SOHC and 1.6L DOHC ITMS-6F) 1F-250 . .DTC 61 CCP SoIenoid Shorted to Ground(1.3L SOHC and 1.6L DOHC ITMS-6F) 1F-252 . .DTC 62 CCP SoIenoid Shorted to Battery(1.3L SOHC and 1.6L DOHC ITMS-6F) 1F-254 . .DTC 63 EIectronic Spark Timing "B"Shorted to Ground (1.3L and1.5L SOHC IEFI-6) 1F-256 . . . . . . . . . . . . . . . . . . . .DTC 63 EIectronic Spark Timing "B"Shorted to Ground (1.3L SOHC and1.6L DOHC ITMS-6F) 1F-258 . . . . . . . . . . . . . . . . . .DTC 64 EIectronic Spark Timing "A"Shorted to Ground (1.3L and1.5L SOHC IEFI-6) 1F-260 . . . . . . . . . . . . . . . . . . . .DTC 64 EIectronic Spark Timing "A"Shorted to Ground (1.3L SOHC and1.6L DOHC ITMS-6F) 1F-262 . . . . . . . . . . . . . . . . . .DTC 87 A/C Cut Shorted to Ground(1.3L SOHC and 1.6L DOHC ITMS-6F) 1F-264 . .DTC 88 A/C Cut Shorted to Battery(1.3L SOHC and 1.6L DOHC ITMS-6F) 1F-266 . .DTC 93 QDM FaiIure (QDM FaiIure)(1.3L SOHC and 1.6L DOHC ITMS-6F) 1F-268 . .Symptom Diagnosis 1F-271 . . . . . . . . . . . . . . . . . . . . . .Important PreIiminary Checks 1F-271 . . . . . . . . . . . . .Intermittents 1F-271 . . . . . . . . . . . . . . . . . . . . . . . . . . . .Hard Start 1F-273 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Surges or ChuggIes 1F-275 . . . . . . . . . . . . . . . . . . . . .Lack of Power, SIuggishness, orSponginess 1F-277 . . . . . . . . . . . . . . . . . . . . . . . . . . .Detonation/Spark Knock 1F-278 . . . . . . . . . . . . . . . . . .Hesitation, Sag, StumbIe 1F-280 . . . . . . . . . . . . . . . . .Cuts Out, Misses 1F-281 . . . . . . . . . . . . . . . . . . . . . . . .Poor FueI Economy 1F-283 . . . . . . . . . . . . . . . . . . . . . .Rough, UnstabIe, or IncorrectIdIe, StaIIing 1F-284 . . . . . . . . . . . . . . . . . . . . . . . . . .Excessive Exhaust Emissions or Odors 1F-286 . . . .DieseIing, Run-On 1F-287 . . . . . . . . . . . . . . . . . . . . . . .Backfire 1F-288 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Maintenance and Repair 1F-289 . . . . . . . . . . . . . . . . . .On-VehicIe Service 1F-289 . . . . . . . . . . . . . . . . . . . . . . . .FueI Tank 1F-289 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .FueI Pump 1F-291 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .FueI FiIter 1F-292 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .FueI RaiI and Injectors (SOHC) 1F-293 . . . . . . . . . . . .FueI RaiI and Injectors (DOHC) 1F-294 . . . . . . . . . . .FueI Pressure ReguIator (SOHC) 1F-296 . . . . . . . . . .FueI Pressure ReguIator (DOHC) 1F-297 . . . . . . . . . .CooIant Temperature Sensor (SOHC) 1F-298 . . . . .CooIant Temperature Sensor (DOHC) 1F-299 . . . . .ThrottIe Position Sensor (TypicaI) 1F-299 . . . . . . . . . .ThrottIe Body (TypicaI) 1F-300 . . . . . . . . . . . . . . . . . . .Oxygen Sensor (TypicaI) 1F-302 . . . . . . . . . . . . . . . . .CO Potentiometer (Leaded FueI OnIy) 1F-303 . . . . .ManifoId Air TemperatureSensor (TypicaI) 1F-303 . . . . . . . . . . . . . . . . . . . . . .IdIe Air ControI VaIve (TypicaI) 1F-304 . . . . . . . . . . . .VariabIe Geometry Induction System 1F-305 . . . . . . .ManifoId AbsoIute PressureSensor (TypicaI) 1F-305 . . . . . . . . . . . . . . . . . . . . . . .Exhaust Gas RecircuIation VaIve (SOHC) 1F-306 . . .Exhaust Gas RecircuIation VaIve (DOHC) 1F-306 . .Exhaust Gas RecircuIation VaIveSoIenoid (TypicaI) 1F-307 . . . . . . . . . . . . . . . . . . . . .Knock Sensor 1F-307 . . . . . . . . . . . . . . . . . . . . . . . . . . .Evaporative Emission Canister 1F-309 . . . . . . . . . . . .Canister Purge SoIenoid (TypicaI) 1F-309 . . . . . . . . .Crankshaft Position Sensor (TypicaI) 1F-310 . . . . . . .EIectronic ControI ModuIe (TypicaI) 1F-311 . . . . . . . .Direct Ignition System IgnitionCoiI (TypicaI) 1F-311 . . . . . . . . . . . . . . . . . . . . . . . . . .GeneraI Description and SystemOperation 1F-313 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Ignition System Operation 1F-313 . . . . . . . . . . . . . . . .Direct Ignition System Ignition CoiI 1F-313 . . . . . . . . .Crankshaft Position Sensor 1F-313 . . . . . . . . . . . . . . .IdIe Air System Operation 1F-313 . . . . . . . . . . . . . . . .FueI ControI System Operation 1F-313 . . . . . . . . . . . .Evaporative Emission ControISystem Operation 1F-314 . . . . . . . . . . . . . . . . . . . . .Evaporative Emission Canister 1F-314 . . . . . . . . . . . .VariabIe Geometry InductionSystem Operation 1F-314 . . . . . . . . . . . . . . . . . . . . .Positive Crankcase VentiIation ControISystem Operation 1F-315 . . . . . . . . . . . . . . . . . . . . .CooIant Temperature Sensor 1F-315 . . . . . . . . . . . . . .ThrottIe Position Sensor 1F-315 . . . . . . . . . . . . . . . . . .Oxygen Sensor 1F-315 . . . . . . . . . . . . . . . . . . . . . . . . .CO Potentiometer (Leaded FueI OnIy) 1F-315 . . . . .Exhaust Gas RecircuIation VaIveand SoIenoid 1F-315 . . . . . . . . . . . . . . . . . . . . . . . . .ManifoId Air Temperature Sensor 1F-316 . . . . . . . . . .IdIe Air ControI VaIve 1F-316 . . . . . . . . . . . . . . . . . . . .ManifoId AbsoIute Pressure Sensor 1F-316 . . . . . . . .EIectronic ControI ModuIe 1F-317 . . . . . . . . . . . . . . . .FueI Injector 1F-317 . . . . . . . . . . . . . . . . . . . . . . . . . . . .Knock Sensor 1F-317 . . . . . . . . . . . . . . . . . . . . . . . . . . .Octane Number Connector 1F-318 . . . . . . . . . . . . . . .1F -- 4 ENGINE CONTROLSDAEWOO T-100 BL3SPECIFICATIONSSCAN TOOL DATA TABLEParameter Units DispIayed TypicaI Data VaIueEngine Speed rpm $ 50 rpm from desired rpm in drive (A/T)$ 50 rpm from desired rpm in neutraI (M/T)Desired IdIe rpm ECM idIe command (varies with temperature)Engine CooIant Temperature degrees CeIsius 85-105ECMAT/InternaI AirTemperature degrees CeIsius 10-90ECMAP kPa/voIts 29-48 kPa/1-2 voIts(varies with manifoId and barometric pressure)Barometric Pressure kPa/voIts varies with aItitudeFueIing Mode open/cIosed "CIosed Loop" (may enter "Open Loop" at extended idIe)ThrottIe Position voIts 0.3-1.0 vAir/FueI Ratio - -Oxygen Sensor SignaI miIIivoIts 1-1000 mv (varies continuousIy)Injector-PuIse Width miIIiseconds 0.8-2.5 msSpark Advance degrees variesFueI Integrator counts 110 X 145BIock Lever counts 115 X 138IdIe Air ControI counts 1-50P/N Switch (A/T OnIy) P-N and R-D-L Park/NeutraI (P/N)VehicIe Speed kph, mph 0A/C Pressure kPa variesIgnition/Battery VoItage voIts 13.5-14.8 vCooIing Fan ReIay on/off on/offA/C Request yes/no noA/C CIutch on/off offLow Fan Request on/off on/offProm ID 0-9999 PROM ID number variesCanister Purge SoIenoid on/off offCO Adjust (Leaded FueI) count 128High-Speed Fan on/off offENGINE CONTROLS 1F -- 5DAEWOO T-100 BL3FASTENER TIGHTENING SPECIFICATIONSAppIication N:m Lb-Ft Lb-InCooIant Temperature Sensor 20 15 -Crankshaft Position Sensor Retaining BoIt 10 - 89Direct Ignition System Ignition CoiI Retaining BoIts 10 - 89Evaporative Emission Canister FIange BoIt 20 15 -Exhaust Gas RecircuIation VaIve Retaining BoIts 20 15 -FueI Pressure ReguIator Retaining BoIt - SOHC 12 - 106FueI Pressure ReguIator Retaining Screw 12 - 106FueI Tank Retaining BoIts 20 15 -IdIe Air ControI VaIve Retaining BoIts 3 - 27Knock Sensor BoIt 20 15 -ManifoId AbsoIute Pressure SensorMounting Bracket BoIt 10 - 89ManifoId AbsoIute Pressure SensorRetaining BoIts and Nuts 8 - 71Oxygen Sensor 41 30 -Parking Brake CabIe Retainer CIamps 10 - 89ThrottIe Body Retaining BoIts 15 11 -ThrottIe Position Sensor Retaining BoIts 2 - 18VariabIe Geometry Induction System Vacuum ActuatorAssembIy Mounting Bracket BoIt 16 12 -1F -- 6 ENGINE CONTROLSDAEWOO T-100 BL3SCHEMATIC AND ROUTING DIAGRAMSA202F001ECMWIRINGDIAGRAM(1.3LAND1.5LSOHC-1OF5)(IEFI-6ECM)ENGINE CONTROLS 1F -- 7DAEWOO T-100 BL3A22F002AECMWIRINGDIAGRAM(1.3LAND1.5LSOHC-2OF5)(IEFI-6ECM)1F -- 8 ENGINE CONTROLSDAEWOO T-100 BL3A302F003ECMWIRINGDIAGRAM(1.3LAND1.5LSOHC-3OF5)(IEFI-6ECM)ENGINE CONTROLS 1F -- 9DAEWOO T-100 BL3A202F004ECMWIRINGDIAGRAM(1.3LAND1.5LSOHC-4OF5)(IEFI-6ECM)1F -- 10 ENGINE CONTROLSDAEWOO T-100 BL3A202F005ECMWIRINGDIAGRAM(1.3LAND1.5LSOHC-5OF5)(IEFI-6ECM)ENGINE CONTROLS 1F -- 11DAEWOO T-100 BL3A202F006ECMWIRINGDIAGRAM(1.3LSOHCAND1.6LDOHC--1OF5)(ITMS-6FECM)1F -- 12 ENGINE CONTROLSDAEWOO T-100 BL3A22F007AECMWIRINGDIAGRAM(1.3LSOHCAND1.6LDOHC--2OF5)(ITMS-6FECM)ENGINE CONTROLS 1F -- 13DAEWOO T-100 BL3A302F008ECMWIRINGDIAGRAM(1.3LSOHCAND1.6LDOHC--3OF5)(ITMS-6FECM)1F -- 14 ENGINE CONTROLSDAEWOO T-100 BL3A202F009ECMWIRINGDIAGRAM(1.3LSOHCAND1.6LDOHC--4OF5)(ITMS-6FECM)ENGINE CONTROLS 1F -- 15DAEWOO T-100 BL3A202F010ECMWIRINGDIAGRAM(1.3LSOHCAND1.6LDOHC--5OF5)(ITMS-6FECM)1F -- 16 ENGINE CONTROLS1997 DAEWOO T-100 BL3CONNECTOR END VIEWA302F065 A302F066A202F067 A202F068A302F091 A102F080ENGINE CONTROLS 1F -- 171997 DAEWOO T-100 BL3CONNECTOR END VIEW (Cont'd)A102F085 A102F088A102F076 A102F074A102F077 A102F0861F -- 18 ENGINE CONTROLS1997 DAEWOO T-100 BL3CONNECTOR END VIEW (Cont'd)A102F081 A102F078A202F069 A102F089A102F082 A102F075ENGINE CONTROLS 1F -- 191997 DAEWOO T-100 BL3CONNECTOR END VIEW (Cont'd)A102F084 B302F1501F -- 20 ENGINE CONTROLS1997 DAEWOO T-100 BL3COMPONENT LOCATORCOMPONENT LOCATOR -- SOHCA302F001Components on ECM Harness11 EIectronic ControI ModuIe (ECM)12 AssembIy Line Diagnostic Link (ALDL)Diagnostic Connector13 MaIfunction Indicator Lamp14 ECM/ABS Harness Ground15 Fuse PaneI (2)ECM-ControIIed Devices21 FueI Injector (4)22 IdIe Air ControI (IAC) VaIve23 FueI Pump ReIay24 Engine Fan ReIays25 A/C Compressor ReIay26 Direct Ignition System (DIS) Ignition CoiI27 ControIIed Canister Purge (CCP) SoIenoid28 Exhaust Gas RecircuIation (EGR) SoIenoidInformation Sensors31 ManifoId AbsoIute Pressure (MAP) Sensor32 Oxygen (O

) Sensor33 ThrottIe Position Sensor (TPS)34 CooIant Temperature Sensor (CTS)35 ManifoId Air Temperature (MAT) Sensor36 VehicIe Speed Sensor (VSS)(ManuaI TransaxIe OnIy)37 P/N Switch (Automatic TransaxIe onIy)38 Crankshaft Position Sensor (CPS)39 Knock Sensor40 CO PotentiometerNot ECM-Connected41 Evaporative Emission Canister(under vehicIe, behind right rear wheeI)42 OiI Pressure Switch43 Air CIeanerENGINE CONTROLS 1F -- 211997 DAEWOO T-100 BL3COMPONENT LOCATOR -- DOHCA302F002Components on ECM Harness11 EIectronic ControI ModuIe (ECM)12 AssembIy Line Diagnostic Link (ALDL)Diagnostic Connector13 MaIfunction Indicator Lamp14 ECM/ABS Harness Ground15 Fuse PaneI (2)ECM-ControIIed Devices21 FueI Injector (4)22 IdIe Air ControI (IAC) VaIve23 FueI Pump ReIay24 Engine Fan ReIays25 A/C Compressor ReIay26 Direct Ignition System (DIS) Ignition CoiI27 ControIIed Canister Purge (CCP) SoIenoid28 VariabIe Geometry Induction System (VGIS)29 Exhaust Gas RecircuIation (EGR) SoIenoidInformation Sensors31 ManifoId AbsoIute Pressure (MAP) Sensor32 Oxygen (O

) Sensor33 ThrottIe Position Sensor (TPS)34 CooIant Temperature Sensor (CTS)35 ManifoId Air Temperature (MAT) sensor36 VehicIe Speed Sensor (VSS)(ManuaI TransaxIe OnIy)37 P/N Switch (Automatic TransaxIe OnIy)38 Crankshaft Position Sensor (CPS)39 Knock Sensor40 CO PotentiometerNot ECM-Connected41 Evaporative Emission Canister(under vehicIe, behind right rear wheeI)42 OiI Pressure Switch43 Air CIeaner1F -- 22 ENGINE CONTROLS1997 DAEWOO T-100 BL3DIAGNOSISTROUBLE CODE DIAGNOSISCLEARING TROUBLE CODESNotice: To prevent eIectronic controI moduIe (ECM)damage, the key must be OFF when disconnecting orreconnectingthe power tothe ECM(for exampIe batterycabIe, eIectronic controI moduIe pigtaiI connector, eIec-tronic controI moduIe fuse, jumper cabIes, etc.).When the ECM sets a diagnostic troubIe code (DTC),the service engine soon (SES) Iamp wiII be turned onand a DTC wiII be stored in the ECM's memory. If theprobIem is intermittent, the Iight wiII go out after 10 sec-onds if the fauIt is no Ionger present. The DTC wiII stayin the ECM's memory untiI the battery voItagetothe ECMis removed. Removingbattery voItage for 10seconds wiII cIear aII stored DTCs.DTCs shouId be cIeared after repairs have been com-pIeted. Some diagnostic tabIes wiII teII you to cIear thecodes before usingthe chart. This aIIows the ECMtosetthe DTCwhiIe goingthrough the chart, which wiII heIptofind the cause of the probIem more quickIy.IDLE LEARN PROCEDUREWhenever the battery cabIes, the eIectronic controImoduIe (ECM), or the ECM fuse is disconnected or re-pIaced, the foIIowing idIe Iearn procedure must be per-formed:1. Turn the ignition ON for 5 seconds.2. Turn the ignition OFF for 5 seconds.3. Turn the ignition ON for 5 seconds.4. Start the engine in P/N (park/neutraI).5. AIIow the engine run untiI the engine cooIant isabove 85EC (185EF).6. Turn the air conditioning (A/C) ON for 10 seconds, ifequipped.7. Turn the A/C OFF for 10 seconds, if equipped.8. If the vehicIe is equipped with an automatic trans-axIe, appIy the parking brake. WhiIe pressing thebrake pedaI, pIace the transaxIe in drive (D).9. Turn the A/C ON for 10 seconds, if equipped.10. Turn the A/C OFF for 10 seconds, if equipped.11. Turn the ignition OFF. The idIe Iearn procedure iscompIete.DIAGNOSTIC SYSTEMCHECK(1.3L AND 1.5L SOHC IEFI-6)Circuit DescriptionThe diagnostic system check is an organized approachto identifying a probIem created by an eIectronic enginecontroI system maIfunction. It must be the startingpoint for any driveabiIity compIaint diagnosis because itdirects the technician to the next IogicaI step in diagnos-ing the compIaint. Understanding the tabIe and using itcorrectIy wiII reduce diagnostic time and prevent the un-necessary repIacement of parts.Test DescriptionThe number(s) beIow refer to step(s) on the diagnostictabIe.1. Checkfor proper operationof the service engine soon(SES) Iamp. When the ignition is ON and the engineis OFF, the SES Iamp shouIdcome on and remain onsteadiIy.2. No SES at this point indicates that there is a probIemwith the SES circuit or the eIectronic controI moduIe(ECM) controI of that circuit.3. This step checks the abiIity of the ECMto controI theSES Iamp. With the assembIy Iine diagnostic Iink(ALDL) terminaI grounded, the SES Iamp shouIdfIash a Code 12 three times, foIIowedby any diagnos-tic troubIe code (DTC) stored in memory. Dependingupon the type of ECM, an ECMerror may resuIt intheinabiIity to fIash Code 12.4. Most procedures use a scan tooI to aid diagnosis;therefore, seriaI data must be avaiIabIe. If an ECMer-ror is present, the ECM may be abIe to iIIuminate theSES Iamp, but not enabIe seriaI data.5. AIthough the ECMis powered up, an "Engine CranksBut WiII Not Start" symptom couId exist because ofan ECM or system probIem.6. This step wiII isoIate if the customer compIaint is anSES or a driveabiIity probIem with no SES. Refer tothe DTC in this section for a Iist of vaIid DTCs. An in-vaIid DTC may be the resuIt of a fauIty scan tooI or afauIty ECM.7. Comparison of actuaI controI system data with thetypicaI vaIues is a quick check to determine if any pa-rameter is not within Iimits. Keep in mind that a basicengine probIem (such as incorrect vaIve timing or avacuum Ieak) may substantiaIIy aIter sensorvaIues.8. InstaIIation of a scan tooI wiII provide a good groundpath for the ECM and may hide a driveabiIity com-pIaint due to poor ECM grounds.9. If the actuaI data is not within the typicaI vaIues estab-Iished, refer to the tabIes in "Symptom Diagnosis" toprovide a functionaI check of the suspect componentor system.ENGINE CONTROLS 1F -- 231997 DAEWOO T-100 BL3Diagnostic System Check (1.3L and 1.5L SOHC IEFI-6)Step Action VaIue(s) Yes No1 Verify the customer compIaint(s).Are the customer's compIaint(s) verified? - Go to Step 2 -2 Turn the ignition ON.Is the service engine soon (SES) Iamp on steadiIy? - Go to Step 4 Go to Step 33 Jumper the assembIy Iine diagnostic Iink (ALDL) ter-minaIs A and B.Does the SES fIash Code 12? -Go to Step 4Go to"WiII Not FIashSES"4 1. Connect the scan tooI to the ALDL.2. Turn the ignition ON.Does the scan tooI dispIay seriaI data? -Go to Step 5 Go to Step 125Start the engine.Does the engine start?-Go to Step 6Go to"EngineCranks ButWiII Not Start"61. Turn the ignition OFF.2. Connect the scan tooI to the ALDL.3. Turn the ignition ON.Are any diagnostic troubIe codes (DTCs) dispIayed?-Go to Step 8 Go to Step 77 1. Start the engine.2. Compare the scan tooI data with typicaI vaIues.Are the vaIues normaI or within the normaI range? - Go to Step 9 Go to Step 108 Refer to the appIicabIe DTC tabIe. Start with theDTC with the Iowest numericaI vaIue and move up.Are the DTC(s) identified as vaIid troubIe code(s)? - Go to theappIicabIe DTCtabIe Go to Step 69 Are there any symptoms that have been identified?- Go to theappIicabIesymptom tabIe Go to Step 1110 Identify the component that has a seriaI data vaIueoutside the normaI range.Has the component been identified? - Go to"DiagnosticAids" -111. CIear any DTC(s) from the eIectronic controImoduIe (ECM) memory.2. Verify that the DTC(s) have been cIeared.3. Road test the vehicIe.4. Recheck for the presence of any DTC(s).Is the repair compIete?-System OK Go to Step 112 1. Attach the scan tooI to another vehicIe.2. Turn the ignition ON.Does the scan tooI read seriaI data? -Go to Step 13 Go to Step 1613 Check for an open or short in the wire between ECMterminaI B7 and ALDL connector M.Is the probIem found? -Go to Step 14 Go to Step 15141. Repair the open or short as necessary.2. Connect the scan tooI to the ALDL.3. Start the engine.Does the scan tooI dispIay seriaI data?-System OK Go to Step 151F -- 24 ENGINE CONTROLS1997 DAEWOO T-100 BL3Diagnostic System Check (1.5L SOHC IEFI-6) (Cont'd)Step Action VaIue(s) Yes No151. RepIace the ECM.2. Connect the scan tooI to the ALDL.3. Start the engine.Does the scan tooI dispIay seriaI data?-Go to Step 6 -161. RepIace the scan tooI.2. Connect the scan tooI to the ALDL.3. Ignition ON.Does the scan tooI read seriaI data?-Go to Step 5 -DIAGNOSTIC SYSTEMCHECK(1.3L SOHC AND 1.6L DOHC ITMS-6F)Circuit DescriptionThe diagnostic system check is an organized approachto identifying a probIem created by an eIectronic enginecontroI system maIfunction. It must be the startingpoint for any driveabiIity compIaint diagnosis becauseit directs the technician to the next IogicaI step in diag-nosingthe compIaint. Understandingthe tabIe andusingit correctIy wiII reduce diagnostic time and prevent theunnecessary repIacement of parts.Test DescriptionThe number(s) beIow refer to step(s) on the diagnostictabIe.1. Checkfor proper operationof the service engine soon(SES) Iamp. When the ignition is ON and the engineis OFF, the SES Iamp shouIdcome on and remain onsteadiIy.2. No SES at this point indicates that there is a probIemwith the SES circuit or the eIectronic controI moduIe(ECM) controI of that circuit.3. This step checks the abiIity of the ECMto controI theSES Iamp. With the assembIy Iine diagnostic Iink(ALDL) terminaI grounded, the SES Iamp shouIdfIash a Code 12 three times, foIIowedby any diagnos-tic troubIe code (DTC) stored in memory. Dependingupon the type of ECM, an ECMerror may resuIt intheinabiIity to fIash Code 12.4. Most procedures use a scan tooI to aid diagnosis;therefore, seriaI data must be avaiIabIe. If an ECMer-ror is present, the ECM may be abIe to iIIuminate theSES Iamp, but not enabIe seriaI data.5. AIthough the ECMis powered up, an "Engine CranksBut WiII Not Start" symptom couId exist because ofan ECM or system probIem.6. This step wiII isoIate if the customer compIaint is anSES or a driveabiIity probIem with no SES. Refer tothe DTC in this section for a Iist of vaIid DTCs. An in-vaIid DTC may be the resuIt of a fauIty scan tooI or afauIty ECM.7. Comparison of actuaI controI system data with thetypicaI vaIues is a quick check to determine if any pa-rameter is not within Iimits. Keep in mind that a basicengine probIem (such as incorrect vaIve timing or avacuum Ieak) may substantiaIIy aIter sensor vaIues.8. InstaIIation of a scan tooI wiII provide a good groundpath for the ECM and may hide a driveabiIity com-pIaint due to poor ECM grounds.9. If the actuaI data is not within the typicaI vaIues estab-Iished, refer to the tabIes in "Symptom Diagnosis" toprovide a functionaI check of the suspect componentor system.ENGINE CONTROLS 1F -- 251997 DAEWOO T-100 BL3Diagnostic System Check (1.3L SOHC and 1.6L DOHC ITMS-6F)Step Action VaIue(s) Yes No1 Verify the customer compIaint(s).Are the customer's compIaint(s) verified? - Go to Step 2 -2 Turn the ignition ON.Is the service engine soon (SES) Iamp on steadiIy? - Go to Step 4 Go to Step 33 Jumper the assembIy Iine diagnostic Iink (ALDL) ter-minaIs A and B.Does the SES fIash Code 12? -Go to Step 4Go to"WiII Not FIashSES"4 1. Connect the scan tooI to the ALDL.2. Turn the ignition ON.Does the scan tooI dispIay seriaI data? -Go to Step 5 Go to Step 125Start the engine.Does the engine start?-Go to Step 6Go to"EngineCranks ButWiII Not Start"61. Turn the ignition OFF.2. Connect the scan tooI to the ALDL.3. Turn the ignition ON.Are any diagnostic troubIe codes (DTCs) dispIayed?-Go to Step 8 Go to Step 77 1. Start the engine.2. Compare the scan tooI data with typicaI vaIues.Are the vaIues normaI or within the normaI range? -Go to Step 9 Go to Step 108 Refer to the appIicabIe DTC tabIe. Start with theDTC with the Iowest numericaI vaIue and move up.Are the DTC(s) identified as vaIid troubIe code(s)? - Go to theappIicabIe DTCtabIe Go to Step 69 Are there any symptoms that have been identified?- Go to theappIicabIesymptom tabIe Go to Step 1110 Identify the component that has a seriaI data vaIueoutside the normaI range.Has the component been identified? - Go to"DiagnosticAids" -111. CIear any DTC(s) from the eIectronic controImoduIe (ECM) memory.2. Verify that the DTC(s) have been cIeared.3. Road test the vehicIe.4. Recheck for the presence of any DTC(s).Is the repair compIete?-System OK Go to Step 112 1. Attach the scan tooI to another vehicIe.2. Turn the ignition ON.Does the scan tooI read seriaI data? -Go to Step 13 Go to Step 1613 Check for an open or short in the wire between ECMterminaI D11 and ALDL connector M.Is the probIem found? -Go to Step 14 Go to Step 15141. Repair the open or short as necessary.2. Connect the scan tooI to the ALDL.3. Start the engine.Does the scan tooI dispIay seriaI data?-System OK Go to Step 151F -- 26 ENGINE CONTROLS1997 DAEWOO T-100 BL3Diagnostic System Check (1.3L SOHC and 1.6L DOHC ITMS-6F) (Cont'd)Step Action VaIue(s) Yes No151. RepIace the ECM.2. Connect the scan tooI to the ALDL.3. Start the engine.Does the scan tooI dispIay seriaI data?-Go to Step 6 -161. RepIace the scan tooI.2. Connect the scan tooI to the ALDL.3. Ignition ON.Does the scan tooI read seriaI data?-Go to Step 5 -DIAGNOSTIC AIDSIf an intermittent probIem is evident, foIIow the guide-Iines beIow.PreIiminary ChecksBefore using this section you shouId have aIready per-formed the "Diagnostic System Check."Perform a thorough visuaI inspection. This inspectioncan often Iead to correcting a probIem without furtherchecks and can save vaIuabIe time. Inspect for the foI-Iowing conditions:- EIectronic controI moduIe (ECM) grounds for beingcIean, tight, and in their proper Iocation.- Vacuum hoses for spIits, kinks, or coIIapsing and im-proper connections as shown on the VehicIe Emis-sion ControI Information IabeI. Inspect thoroughIy forany type of Ieak or restriction.- Air Ieaks at the throttIe body mounting area and theintake manifoId seaIing surfaces.- Ignition wires for cracks, hardness, improper routing,and carbon tracking.- Wiring for improper connections.- Wiring for pinches or cuts.Diagnostic TroubIe Code TabIesDo not use the diagnostic troubIe code (DTC) tabIes totry to correct an intermittent fauIt. The fauIt must bepresent to Iocate the probIem.Incorrect use of the DTC tabIes may resuIt in the unnec-essary repIacement of parts.FauIty EIectricaI Connections or WiringMost intermittent probIems are caused by fauIty eIectri-caI connections or wiring. Perform a carefuI inspectionof suspect circuits for the foIIowing:- Poor mating of the connector haIves.- TerminaIs not fuIIy seated in the connector body.- ImproperIy formedor damagedterminaIs. AII connec-tor terminaIs in a probIem circuit shouId be carefuIIyinspected, reformed, or repIaced to insure contacttension.- Poor terminaI-to-wire connection. This requires re-moving the terminaI from the connector body.Road TestIf a visuaI inspection does not findthe cause of the prob-Iem, the vehicIe can be driven with a voItmeter or a scantooI connected to a suspected circuit. An abnormaI voIt-age or scan tooI reading wiII indicate that the probIemisin that circuit.If there are no wiring or connector probIems found anda DTC was stored for a circuit having a sensor, exceptfor DTC 44 and DTC 45, repIace the sensor.Intermittent Service Engine Soon (SES) LampAn intermittent service engine soon (SES) Iamp with noDTC present may be caused by the foIIowing:- EIectricaI system interference caused by a defectivereIay, ECM-driven soIenoid, or switch.- Improper instaIIation of eIectricaI options such asIights, two-way radios, sound systems, or securitysystems.- Ignition controI wires not routed away from ignitionwires, ignitionsystemcomponents, andthegenerator.- Ignition secondary wires shorted to ground.- SES Iampdriver wire or diagnostic test terminaI inter-mittentIy shorted to ground.- Intermittent Ioss of ECM ground connections.FueI SystemSome intermittent driveabiIity probIems can be attrib-uted to poor fueI quaIity. If a vehicIe is occasionaIIy run-ning rough, staIIing, or otherwise performing badIy, askthe customer about the foIIowing fueI buying habits:- Do they aIways buy fromthe same source? If so, fueIquaIity probIems can usuaIIy be discounted.- Do they buy their fueI fromwhichever fueI station is ad-vertising the Iowest price? If so, check the fueI tank forsignsof debris, water, or other contamination.ENGINE CONTROLS 1F -- 271997 DAEWOO T-100 BL3ENGINE CRANKS BUT WILL NOT START (1.3L AND 1.5L SOHC IEFI-6)Test DescriptionThe number(s) beIow refer to step(s) on the diagnostictabIe.3. By performing a compression test, it can be deter-minedif the engine has the mechanicaI abiIity torun.9. It is important to check for the presence of sparkfromaII of the ignition wires. If spark is present fromone to three of the ignition coiI terminaIs, the crank-shaft position sensor (CPS) is OK.19. In checking the eIectronic controI moduIe (ECM)outputs for the eIectronic spark timing signaI, it rec-ommended to use an osciIIoscope to view the vary-ing voItage signaIs. In measuringthese outputs witha voItmeter, intermittent errors may occur that can-not be seen by a voItmeter.35. This step checks for proper operation of the ECM'scontroI of the fueI pump circuit.59. This step checks for a ground signaI being suppIiedby the ECM to operate the fueI injectors. If there isnogroundpresent duringthe crankingof the engine,andthe fueI injector wiringis OK, the ECMis at fauIt.Engine Cranks But WiII Not Start (1.3L and 1.5L SOHC IEFI-6)Caution: UseonIy eIectricaIIy insuIatedpIiers whenhandIingignitionwires withtheenginerunningtopreCvent aneIectricaI shock.Caution: Do not pinch or restrict nyIonfueI Iines. DamagetotheIines couIdcausea fueI Ieak, resuItinginpossibIefireor personaI injury.Step Action VaIue(s) Yes No1 Was the Diagnostic System Check performed?-Go to Step 2Go to"DiagnosticSystem Check_2 Crank the engine.Does the engine start and continue to run? - System OK Go to Step 33 Perform a cyIinder compression test.Is the cyIinder compression for aII of the cyIinders ator above the vaIue specified? 689 kPa(100 psi) Go to Step 7 Go to Step 44 Inspect the timing beIt aIignment.Is the timing beIt in aIignment? - Go to Step 6 Go to Step 55 AIign or repIace the timing beIt as needed.Is the repair compIete? - Go to Step 2 -6 Repair the internaI engine damage as needed.Is the repair compIete? - Go to Step 2 -7 Inspect the fueI pump fuse.Is the probIem found? - Go to Step 8 Go to Step 98 RepIace the fuse.Is the repair compIete? - Go to Step 2 -9 Check for the presence of spark from aII of theignition wires whiIe cranking the engine.Is spark present from aII of the ignition wires? -Go to Step 34 Go to Step 10101. Measure the resistance of the ignition wires.2. RepIace any of the ignition wire(s) with aresistance above the vaIue specified.3. Check for the presence of spark from aII of theignition wires.Is spark present from aII of the ignition wires? 30,000 : Go to Step 2 Go to Step 111F -- 28 ENGINE CONTROLS1997 DAEWOO T-100 BL3Engine Cranks But WiII Not Start (1.3L and 1.5L SOHC IEFI-6) (Cont'd)Step Action VaIue(s) Yes No111. Turn the ignition OFF.2. Disconnect the crankshaft position sensor (CPS)connector.3. Turn the ignition ON.4. Measure the voItage between the CPS connectorterminaIs 1 and 3.Does the voItage measure near the vaIue specified? 1.08 v Go to Step 12 Go to Step 1312 Measure the voItage between the CPS connectorterminaIs 2 and 3.Does the voItage measure near the vaIue specified? 1.08 v Go to Step 19 Go to Step 1413 Measure the voItage between the CPS connectorterminaIs 1 and ground.Does the voItage measure near the vaIue specified? 1.08 v Go to Step 15 Go to Step 1614 Measure the voItage between the CPS connectorterminaIs 2 and ground.Does the voItage measure near the vaIue specified? 1.08 v Go to Step 15 Go to Step 1715 Check for an open or short in the wire between theCPS connector terminaI 3 and ground.Is the probIem found? -Go to Step 18 Go to Step 3316Check for an open or short in the wire between theCPS connector terminaI 1 and the eIectronic controImoduIe (ECM) connector terminaI A2.Is the probIem found? -Go to Step 18 Go to Step 3317Check for an open or short in the wire between theCPS connector terminaI 2 and the ECM connectorterminaI B3.Is the probIem found? -Go to Step 18 Go to Step 3318 Repair the wiring as needed.Is the repair compIete? - Go to Step 2 -191. Disconnect the direct ignition system (DIS)ignition coiI connector to prevent the vehicIe fromstarting.2. Measure the voItage at the ECM connectorterminaI A2 by backprobing the ECM connector.Are the voItage readings near the vaIues specified?1.08 v withignition ON,1.20 v duringcranking Go to Step 20 Go to Step 2120Measure the voItage at the ECM connector terminaIB3 by backprobing the ECM connector.Are the voItage readings near the vaIues specified?1.08 v withignition ON,1.20 v duringcranking Go to Step 22 Go to Step 2121 RepIace the CPS.Is the repair compIete? - Go to Step 2 -221. Turn the ignition OFF.2. Disconnect the eIectricaI connector at the DISignition coiI.3. Connect a test Iight between terminaI D of theDIS ignition coiI connector and ground.4. Turn the ignition ON.Is the test Iight on?-Go to Step 23 Go to Step 2423 Connect a test Iight between terminaI C of the DISignition coiI connector and battery positive.Is the test Iight on? -Go to Step 27 Go to Step 25ENGINE CONTROLS 1F -- 291997 DAEWOO T-100 BL3Engine Cranks But WiII Not Start (1.3L and 1.5L SOHC IEFI-6) (Cont'd)Step Action VaIue(s) Yes No24 Check for an open in the wiring between the ignitionswitch and the DIS ignition coiI connector terminaI D.Is the probIem found? -Go to Step 26 -25 Check for an open in the wire from the DIS ignitioncoiI to ground.Is the probIem found? -Go to Step 26 -261. Repair the wiring as needed.2. Connect the DIS ignition coiI connector.3. Check for the presence of spark from aII of theignition wires.Is spark present from aII of the ignition wires?-Go to Step 2 Go to Step 27271. Turn the ignition OFF.2. Disconnect the DIS ignition coiI connector.3. WhiIe cranking the engine, measure the voItageat the DIS ignition coiI connector terminaI B.DoesthevoItagefIuctuatewithinthevaIuesspecified? 0.2-2.0 v Go to Step 28 Go to Step 2928WhiIe cranking the engine, measure the voItage atthe DIS ignition coiI connector terminaI A.Does the voItage fIuctuate within the vaIuesspecified? 0.2-2.0 v Go to Step 32 Go to Step 3029Check for an open in the wire from the DIS ignitioncoiI connector terminaI B to the ECM connectorterminaI D10.Is the probIem found? -Go to Step 31 Go to Step 3330Check for an open in the wire from the DIS ignitioncoiI connector terminaI A to the ECM connectorterminaI C3.Is the probIem found? -Go to Step 31 Go to Step 33311. Repair the wiring as needed.2. Connect the DIS ignition coiI connector.3. Check for the presence of spark from aII of theignition wires.Is spark present from aII of the ignition wires?-Go to Step 2 Go to Step 3232 RepIace the DIS ignition coiI.Is the repair compIete? - Go to Step 2 -33 RepIace the ECM.Is the repair compIete? - Go to Step 2 -341. Turn the ignition OFF.2. Connect a fueI pressure gauge.3. Crank the engine.Is any fueI pressure present? -Go to Step 37 Go to Step 35351. Turn the ignition OFF.2. Disconnect the eIectricaI connector at the fueIpump.3. Connect a test Iight between the fueI pumpconnector terminaIs 3 and 2.4. Turn the ignition ON.5. With the ignition ON, the test Iight shouId Iight forthe time specified.Is the test Iight on? 2 sec Go to Step 36 Go to Step 461F -- 30 ENGINE CONTROLS1997 DAEWOO T-100 BL3Engine Cranks But WiII Not Start (1.3L and 1.5L SOHC IEFI-6) (Cont'd)Step Action VaIue(s) Yes No36 RepIace the fueI pump.Is the repair compIete? - Go to Step 2 -37 Is the fueI pressure within the vaIue specified? 283-324 kPa(41-47 psi) Go to Step 41 Go to Step 3838 1. Check the fueI fiIter for a restriction.2. Inspect the fueI Iines for kinks and restrictions.Is the probIem found? -Go to Step 39 Go to Step 40391. RepIacethefueI fiIter and/or thefueI Iinesasneeded.2. Connect a fueI pressure gauge.3. Crank the engine.Is the fueI pressure within the vaIue specified? 283-324 kPa(41-47 psi) Go to Step 2 Go to Step 40401. Disconnect the vacuum Iine from the fueIpressure reguIator.2. Inspect the vacuum Iine for the presence of fueI.3. Inspect the fueI pressure reguIator vacuum portfor the presence of fueI.Is any fueI present?-Go to Step 43 Go to Step 4441 Check the fueI for contamination.Is the fueI contaminated? - Go to Step 42 Go to Step 5842 1. Remove the contaminated fueI from the fueI tank.2. CIean the fueI tank as needed.Is the repair compIete? -Go to Step 2 -43 RepIace the fueI pressure reguIator.Is the repair compIete? - Go to Step 2 -441. RemovethefueI pumpassembIyfromthefueI tank.2. Inspect the fueI pump sender and the fueIcoupIing hoses for a restriction.3. Inspect the in-tank fueI fiIter for a restriction.Is the probIem found?-Go to Step 45 Go to Step 3645 RepIace the fueI pump sender, the in-tank fueI fiIter,and/or the fueI coupIing hoses as needed.Is the repair compIete? -Go to Step 2 -461. Turn the ignition OFF.2. Disconnect the eIectricaI connector at the fueIpump.3. Connect a test Iight between the fueI pumpconnector terminaI 3 and a known good ground.4. Turn the ignition ON.5. With the ignition ON, the test Iight shouId Iight forthe time specified.Is the test Iight on? 2 sec Go to Step 47 Go to Step 4847 Repair the open wire between the fueI pumpconnector terminaI 2 and ground.Is the repair compIete? -Go to Step 2 -481. Turn the ignition OFF.2. Disconnect the fueI pump reIay.3. Connect a test Iight between the fueI pump reIayconnector terminaI 86 and ground.4. Turn the ignition ON.Is the test Iight on?-Go to Step 49 Go to Step 54ENGINE CONTROLS 1F -- 311997 DAEWOO T-100 BL3Engine Cranks But WiII Not Start (1.3L and 1.5L SOHC IEFI-6) (Cont'd)Step Action VaIue(s) Yes No491. TurntheignitionOFF.2. Connect a test Iight betweenthefueI pumpreIayconnector terminaI 85 andbatterypositive.3. TurntheignitionON.4. WiththeignitionON, thetest Iight shouIdIight forthetimespecified.Is the test Iight on? 2 sec Go to Step 50 Go to Step 55501. TurntheignitionOFF.2. Connect a test Iight betweenthefueI pumpreIayconnector terminaI 30 andground.Is the test Iight on? -Go to Step 51 Go to Step 57511. TurntheignitionOFF.2. CheckthewirebetweenthefueI pumpreIayconnector terminaI 87 andthefueI pumpconnectorterminaI 3 for anopenor short toground.Is the probIem found?-Go to Step 52 Go to Step 5352Repair the wire between the fueI pump reIayconnector terminaI 87 and the fueI pump connectorterminaI 3.Is the repair compIete? -Go to Step 2 -53 RepIace the fueI pump reIay.Is the repair compIete? - Go to Step 2 -541. Inspect theI/PfusebIockfuseF17.2. Checkfor anopeninthewiringbetweentheignitionswitchandthefueI pumpreIayconnector terminaI86.Is the probIem found?-Go to Step 65-55Check the wire between the fueI pump reIayconnector terminaI 85 and the ECM connectorterminaI B6 for an open.Is the probIem found? -Go to Step 56 Go to Step 3356Repair the wire between the fueI pump reIayconnector terminaI 85 and the ECM connectorterminaI B6.Is the repair compIete? -Go to Step 2 -57 Repair the wire between the fueI pump reIayconnector terminaI 30 and the fuse EF16.Is the repair compIete? -Go to Step 2 -581. TurntheignitionOFF.2. Disconnect thefueI injector harnessconnectorsfromaII of thefueI injectors.3. TurntheignitionON.4. Connect a test Iight betweenthefueI injectorharnessconnector 1 andground.5. Repeat step4 for eachof theremainingfueIinjectors.Is the test Iight on at aII of the fueI injectors?-Go to Step 59 Go to Step 621F -- 32 ENGINE CONTROLS1997 DAEWOO T-100 BL3Engine Cranks But WiII Not Start (1.3L and 1.5L SOHC IEFI-6) (Cont'd)Step Action VaIue(s) Yes No591. Turn the ignition OFF.2. Connect a test Iight between the fueI injectorharness connector terminaI 2 and battery positive.3. Crank the engine.4. Repeat Steps 3 and 4 for each of the remainingfueI injectors.Does the test Iight fIash for aII of the fueI injectors?-Go to Step 60 Go to Step 6360 Measure the resistance of each fueI injector.Is the resistance within the vaIue specified? 11.6-12.4 : System OK Go to Step 6161 RepIace any of the fueI injectors with a resistanceout of specification.Is the repair compIete? -Go to Step 2 -62Repair the open wire(s) between the fueI injectorharness connector(s) terminaI 1 and the engine har-ness C104 terminaI 9.Is the repair compIete?-Go to Step 2-631. Check for an open between the fueI injectorharness connector terminaI 2 and the ECMconnector terminaI C10 for the fueI injectors 1and 4.2. Check for an open between the fueI injectorharness connector terminaI 2 and the ECMconnector terminaI C15 for the fueI injectors 2and 3.Is the probIem found?-Go to Step 64 Go to Step 6664 Repair the open fueI injector harness wire(s).Is the repair compIete? - Go to Step 2 -65 RepIace the fuse or repair the wiring as needed.Is the repair compIete? - Go to Step 2 -661. Inspect the I/P fuse F14.2. Check for an open between the circuits fromterminaI 1 for each of the four fueI injectors andthe ignition switch.Is the probIem found?-Go to Step 65-ENGINE CONTROLS 1F -- 331997 DAEWOO T-100 BL3ENGINE CRANKS BUT WILL NOT START (1.3L SOHC AND 1.6L DOHC ITMS-6F)Test DescriptionThe number(s) beIow refer to step(s) on the diagnostictabIe.3. By performing a compression test, it can be deter-minedif the engine has the mechanicaI abiIity torun.9. It is important to check for the presence of sparkfromaII of the ignition wires. If spark is present fromone to three of the ignition coiI terminaIs, the crank-shaft position sensor (CPS) is OK.19. In checking the eIectronic controI moduIe (ECM)outputs for the eIectronic spark timing signaI, it rec-ommended to use an osciIIoscope to view the vary-ing voItage signaIs. In measuringthese outputs witha voItmeter, intermittent errors may occur that can-not be seen by a voItmeter.35. This step checks for proper operation of the ECM'scontroI of the fueI pump circuit.59. This step checks for a ground signaI being suppIiedby the ECM to operate the fueI injectors. If there isnogroundpresent duringthe crankingof the engine,andthe fueI injector wiringis OK, the ECMis at fauIt.Engine Cranks But WiII Not Start (1.3L SOHC and 1.6L DOHC ITMS-6F)Caution: UseonIy eIectricaIIy insuIatedpIiers whenhandIingignitionwires withtheenginerunningtopreCvent aneIectricaI shock.Caution: Do not pinch or restrict nyIonfueI Iines. DamagetotheIines couIdcausea fueI Ieak, resuItinginpossibIefireor personaI injury.Step Action VaIue(s) Yes No1 Was the Diagnostic System Check performed?-Go to Step 2Go to"DiagnosticSystem Check_2 Crank the engine.Does the engine start and continue to run? - System OK Go to Step 33 Perform a cyIinder compression test.Is the cyIinder compression for aII of the cyIinders ator above the vaIue specified? 689 kPa(100 psi) Go to Step 7 Go to Step 44 Inspect the timing beIt aIignment.Is the timing beIt in aIignment? - Go to Step 6 Go to Step 55 AIign or repIace the timing beIt as needed.Is the repair compIete? - Go to Step 2 -6 Repair the internaI engine damage as needed.Is the repair compIete? - Go to Step 2 -7 Inspect the fueI pump fuse.Is the probIem found? - Go to Step 8 Go to Step 98 RepIace the fuse.Is the repair compIete? - Go to Step 2 -9 Check for the presence of spark from aII of the igni-tion wires whiIe cranking the engine.Is spark present from aII of the ignition wires? -Go to Step 34 Go to Step 10101. Measure the resistance of the ignition wires.2. RepIace any of the ignition wire(s) with aresistance above the vaIue specified.3. Check for the presence of spark from aII of theignition wires.Is spark present from aII of the ignition wires? 30,000 : Go to Step 2 Go to Step 111F -- 34 ENGINE CONTROLS1997 DAEWOO T-100 BL3Engine Cranks But WiII Not Start (1.3L SOHC and 1.6L DOHC ITMS-6F) (Cont'd)Step Action VaIue(s) Yes No111. Turn the ignition OFF.2. Disconnect the crankshaft position sensor (CPS)connector.3. Turn the ignition ON.4. Measure the voItage between the CPS connectorterminaIs 1 and 3.Does the voItage measure near the vaIue specified? 1.08 v Go to Step 12 Go to Step 1312 Measure the voItage between the CPS connectorterminaIs 2 and 3.Does the voItage measure near the vaIue specified? 1.08 v Go to Step 19 Go to Step 1413 Measure the voItage between the CPS connectorterminaI 1 and ground.Does the voItage measure near the vaIue specified? 1.08 v Go to Step 15 Go to Step 1614 Measure the voItage between the CPS connectorterminaIs 2 and ground.Does the voItage measure near the vaIue specified? 1.08 v Go to Step 15 Go to Step 1715 Check for an open or short in the wire between theCPS connector terminaI 3 and ground.Is the probIem found? -Go to Step 18 Go to Step 3316Check for an open or short in the wire between theCPS connector terminaI 1 and the eIectronic controImoduIe (ECM) connector terminaI B14.Is the probIem found? -Go to Step 18 Go to Step 3317Check for an open or short in the wire between theCPS connector terminaI 2 and the ECM connectorterminaI A16.Is the probIem found? -Go to Step 18 Go to Step 3318 Repair the wiring as needed.Is the repair compIete? - Go to Step 2 -191. Disconnect the direct ignition system (DIS)ignition coiI connector to prevent the vehicIe fromstarting.2. Measure the voItage at the ECM connectorterminaI B14 by backprobing the ECM connector.Are the voItage readings near the vaIues specified?1.08 v withignition ON,1.20 v duringcranking Go to Step 20 Go to Step 2120Measure the voItage at the ECM connector terminaIA16 by backprobing the ECM connector.Are the voItage readings near the vaIues specified?1.08 v withignition ON,1.20 v duringcranking Go to Step 22 Go to Step 2121 RepIace the CPS.Is the repair compIete? - Go to Step 2 -221. Turn the ignition OFF.2. Disconnect the eIectricaI connector at the DISignition coiI.3. Connect a test Iight between terminaI D of theDIS ignition coiI connector and ground.4. Turn the ignition ON.Is the test Iight on?-Go to Step 23 Go to Step 2423 Connect a test Iight between terminaI C of the DISignition coiI connector and battery positive.Is the test Iight on? -Go to Step 27 Go to Step 25ENGINE CONTROLS 1F -- 351997 DAEWOO T-100 BL3Engine Cranks But WiII Not Start (1.3L SOHC and 1.6L DOHC ITMS-6F) (Cont'd)Step Action VaIue(s) Yes No24 Check for an open in the wiring between the ignitionswitch and the DIS ignition coiI connector terminaI D.Is the probIem found? -Go to Step 26 -25 Check for an open in the wire from the DIS ignitioncoiI to ground.Is the probIem found? -Go to Step 26 -261. Repair the wiring as needed.2. Connect the DIS ignition coiI connector.3. Check for the presence of spark from aII of theignition wires.Is spark present from aII of the ignition wires?-Go to Step 2 Go to Step 27271. Turn the ignition OFF.2. Disconnect the DIS ignition coiI connector.3. WhiIe cranking the engine, measure the voItageat the DIS ignition coiI connector terminaI B.Does the voItage fIuctuate within the vaIuesspecified? 0.2-2.0 v Go to Step 28 Go to Step 2928 WhiIe cranking the engine, measure the voItage atthe DIS ignition coiI connector terminaI A.DoesthevoItagefIuctuatewithinthevaIuesspecified? 0.2-2.0 v Go to Step 32 Go to Step 3029Check for an open in the wire from the DIS ignitioncoiI connector terminaI B to the ECM connectorterminaI C14.Is the probIem found? -Go to Step 31 Go to Step 3330Check for an open in the wire from the DIS ignitioncoiI connector terminaI A to the ECM connectorterminaI D14.Is the probIem found? -Go to Step 31 Go to Step 33311. Repair the wiring as needed.2. Connect the DIS ignition coiI connector.3. Check for the presence of spark from aII of theignition wires.Is spark present from aII of the ignition wires?-Go to Step 2 Go to Step 3232 RepIace the DIS ignition coiI.Is the repair compIete? - Go to Step 2 -33 RepIace the ECM.Is the repair compIete? - Go to Step 2 -341. Turn the ignition OFF.2. Connect a fueI pressure gauge.3. Crank the engine.Is any fueI pressure present? -Go to Step 37 Go to Step 35351. Turn the ignition OFF.2. Disconnect the eIectricaI connector at the fueIpump.3. Connect a test Iight between the fueI pumpconnector terminaIs 3 and 2.4. Turn the ignition ON.5. With the ignition ON, the test Iight shouId Iight forthe time specified.Is the test Iight on? 2 sec Go to Step 36 Go to Step 461F -- 36 ENGINE CONTROLS1997 DAEWOO T-100 BL3Engine Cranks But WiII Not Start (1.3L SOHC and 1.6L DOHC ITMS-6F) (Cont'd)Step Action VaIue(s) Yes No36 RepIace the fueI pump.Is the repair compIete? - Go to Step 2 -37 Is the fueI pressure within the vaIue specified? 283-324 kPa(41-47 psi) Go to Step 41 Go to Step 3838 1. Check the fueI fiIter for a restriction.2. Inspect the fueI Iines for kinks and restrictions.Is the probIem found? -Go to Step 39 Go to Step 40391. RepIace the fueI fiIter and/or the fueI Iines asneeded.2. Connect a fueI pressure gauge.3. Crank the engine.Is the fueI pressure within the vaIue specified? 283-324 kPa(41-47 psi) Go to Step 2 Go to Step 40401. Disconnect the vacuum Iine from the fueIpressure reguIator.2. Inspect the vacuum Iine for the presence of fueI.3. Inspect the fueI pressure reguIator vacuum portfor the presence of fueI.Is any fueI present?-Go to Step 43 Go to Step 4441 Check the fueI for contamination.Is the fueI contaminated? - Go to Step 42 Go to Step 5842 1. Remove the contaminated fueI from the fueI tank.2. CIean the fueI tank as needed.Is the repair compIete? -Go to Step 2 -43 RepIace the fueI pressure reguIator.Is the repair compIete? - Go to Step 2 -441. Remove the fueI pump assembIy from the fueItank.2. Inspect the fueI pump sender and the fueIcoupIing hoses for a restriction.3. Inspect the in-tank fueI fiIter for a restriction.Is the probIem found?-Go to Step 45 Go to Step 3645 RepIace the fueI pump sender, the in-tank fueI fiIter,and/or the fueI coupIing hoses as needed.Is the repair compIete? -Go to Step 2 -461. Turn the ignition OFF.2. Disconnect the eIectricaI connector at the fueIpump.3. Connect a test Iight between the fueI pumpconnector terminaI 3 and a known good ground.4. Turn the ignition ON.5. With the ignition ON, the test Iight shouId Iight forthe time specified.Is the test Iight on? 2 sec Go to Step 47 Go to Step 4847 Repair the open wire between the fueI pump con-nector terminaI 2 and ground.Is the repair compIete? -Go to Step 2 -ENGINE CONTROLS 1F -- 371997 DAEWOO T-100 BL3Engine Cranks But WiII Not Start (1.3L SOHC and 1.6L DOHC ITMS-6F) (Cont'd)Step Action VaIue(s) Yes No481. Turn the ignition OFF.2. Disconnect the fueI pump reIay.3. Connect a test Iight between the fueI pump reIayconnector terminaI 86 and ground.4. Turn the ignition ON.Is the test Iight on?-Go to Step 49 Go to Step 54491. Turn the ignition OFF.2. Connect a test Iight between the fueI pump reIayconnector terminaI 85 and battery positive.3. Turn the ignition ON.4. With the ignition ON, the test Iight shouId Iight forthe time specified.Is the test Iight on? 2 sec Go to Step 50 Go to Step 55501. Turn the ignition OFF.2. Connect a test Iight between the fueI pump reIayconnector terminaI 30 and ground.Is the test Iight on? -Go to Step 51 Go to Step 57511. Turn the ignition OFF.2. Check the wire between the fueI pump reIayconnector terminaI 87 and the fueI pumpconnector terminaI 3 for an open or short toground.Is the probIem found?-Go to Step 52 Go to Step 5352Repair the wire between the fueI pump reIay con-nector terminaI 87 and the fueI pump connector ter-minaI 3.Is the repair compIete? -Go to Step 2 -53 RepIace the fueI pump reIay.Is the repair compIete? - Go to Step 2 -541. Inspect the I/P fuse bIock fuse F17.2. Check for an open in the wiring between theignition switch and the fueI pump reIay connectorterminaI 86.Is the probIem found?-Go to Step 65-55Check the wire between the fueI pump reIay connec-tor terminaI 85 and the ECM connector terminaI A12for an open.Is the probIem found? -Go to Step 56 Go to Step 3356Repair the wire between the fueI pump reIay con-nector terminaI 85 and the ECM connector terminaIA12.Is the repair compIete? -Go to Step 2 -57 Repair the wire between the fueI pump reIay con-nector terminaI 30 and the fuse EF16.Is the repair compIete? -Go to Step 2 -1F -- 38 ENGINE CONTROLS1997 DAEWOO T-100 BL3Engine Cranks But WiII Not Start (1.3L SOHC and 1.6L DOHC ITMS-6F) (Cont'd)Step Action VaIue(s) Yes No581. Turn the ignition OFF.2. Disconnect the fueI injector harness connectorsfrom aII of the fueI injectors.3. Turn the ignition ON.4. Connect a test Iight between the fueI injectorharness connector 1 and ground.5. Repeat Step 4 for each of the remaining fueIinjectors.Is the test Iight on at aII of the fueI injectors?-Go to Step 59 Go to Step 62591. Turn the ignition OFF.2. Connect a test Iight between the fueI injectorharness connector terminaI 2 and battery positive.3. Crank the engine.4. Repeat Steps 3 and 4 for each of the remainingfueI injectors.Does the test Iight fIash for aII of the fueI injectors?-Go to Step 60 Go to Step 6360 Measure the resistance of each fueI injector.Is the resistance within the vaIue specified? 11.6-12.4 : System OK Go to Step 6161 RepIace any of the fueI injectors with a resistanceout of specification.Is the repair compIete? -Go to Step 2 -62Repair the open wire(s) between the fueI injectorharness connector(s) terminaI 1 and the engine har-ness connector C104 terminaI 9.Is the repair compIete? -Go to Step 2 -631. Check for an open between the fueI injectorharness connector terminaI 2 and the ECMconnector terminaI C4 for the fueI injectors 1and 4.2. Check for an open between the fueI injectorharness connector terminaI 2 and the ECMconnector terminaI C6 for the fueI injectors 2and 3.Is the probIem found?-Go to Step 64 Go to Step 6664 Repair the open fueI injector harness wire(s).Is the repair compIete? - Go to Step 2 -65 RepIace the fuse or repair the wiring as needed.Is the repair compIete? - Go to Step 2 -661. Inspect the I/P fuse F14.2. Check for an open between the circuit fromterminaI 1 for each of the four fueI injectors andthe ignition switch.Is the probIem found?-Go to Step 65-ENGINE CONTROLS 1F -- 391997 DAEWOO T-100 BL3%/$1.1F -- 40 ENGINE CONTROLS1997 DAEWOO T-100 BL3A202F011NO SERVICE ENGINE SOON LAMP (1.3L AND 1.5L SOHC IEFI-6)Circuit DescriptionThere shouId aIways be a steady service engine soon(SES) Iamp when the ignition is ON and the engine isstopped. Battery voItage is suppIied directIy to the SESbuIb. The eIectronic controI moduIe (ECM) wiII controIthe SES Iamp and turn it on by providing a ground paththrough the ECMconnector terminaI C1 wire to the SESIamp.Diagnostic Aids- If the engine runs OK, inspect for a fauIty maIfunctionindicator Iamp buIb.- If the engine cranks but wiII not start, check for openfuses and poor ECM connections. ParticuIarIy checkfor ECM ignition and battery feeds, incIuding cIeanand tight ECM ground connections.Test DescriptionThe number(s) beIow refer to step(s) on the diagnostictabIe.4. This step checks for battery voItage in the instru-ment paneI SES Iamp buIb socket.8. This step, aIong with step 9, checks for battery feedto the ECM.10. This step checks for ignition feed to the ECM.24. At this point the SES Iamp wiring is OK. The prob-Iem is a fauIty ECM.ENGINE CONTROLS 1F -- 411997 DAEWOO T-100 BL3No Service Engine Soon Lamp (1.3L and 1.5L SOHC IEFI-6)Step Action VaIue(s) Yes No1 Start the engine.Does the engine start? - Go to Step 2 Go to Step 721. Turn the ignition OFF.2. Disconnect the eIectronic controI moduIe (ECM)connectors.3. Turn the ignition ON.4. Connect a test Iight between the ECM connectorterminaI C1 and ground.Is the service engine soon (SES) Iamp on?-Go to Step 14 Go to Step 33 Inspect the kick paneI fuse F11.Is the fuse OK? - Go to Step 4 Go to Step 154 Check the ignition feed to the SES buIb using a voIt-meter.Is the voItage within the vaIue specified? 11-14 v Go to Step 5 Go to Step 165 Inspect the SES buIb.Is the SES buIb OK? - Go to Step 6 Go to Step 176Check for an open or short to voItage in the wire be-tween the ECM connector terminaI C1 and the SESbuIb.Is the probIem found?-Go to Step 18 Go to Step 137 Inspect the ECM fuse F5/F17.Is the probIem found? - Go to Step 19 Go to Step 881. Turn the ignition OFF.2. Disconnect the ECM red connector.3. Connect a test Iight to ECM connector terminaIB1 and ground.Is the test Iight on?-Go to Step 9 Go to Step 2091. Turn the ignition OFF.2. Disconnect the ECM red connector.3. Connect a test Iight between the ECM connectorterminaI C16 and ground.Is the test Iight on?-Go to Step 10 Go to Step 21101. Turn the ignition OFF.2. Connect a test Iight between the ECM connectorterminaI C4 and ground.3. Turn the ignition ON.Is the test Iight on?-Go to Step 11 Go to Step 2211 Inspect the ECM connector terminaIs B1, C16, andC4 for damage or poor mating.Is the probIem found? -Go to Step 12 Go to Step 1412 Repair the ECM connector terminaI(s) as needed.Is the repair compIete? - Go to"DiagnosticSystem Check_ -13 Inspect for damage or poor mating at the ECM con-nector terminaI C1.Is the probIem found? -Go to Step 12 Go to Step 1414 Check the ECM connector terminaIs A12 and D1 forground.Are the grounds OK? -Go to Step 24 Go to Step 231F -- 42 ENGINE CONTROLS1997 DAEWOO T-100 BL3No Service Engine Soon Lamp (1.3L and 1.5L SOHC IEFI-6) (Cont'd)Step Action VaIue(s) Yes No151. Turn the ignition OFF.2. RepIace the fuse.3. Turn the ignition ON.Is the SES Iamp on?- Go to"DiagnosticSystem Check" Go to Step 416 Repair the open in the ignition feed wire to the SESbuIb.Is the repair compIete? - Go to"DiagnosticSystem Check" -17 RepIace the SES buIb.Is the repair compIete? - Go to"DiagnosticSystem Check" -18 Repair the wire between the ECM connector termi-naI C1 and the SES buIb.Is the repair compIete? - Go to"DiagnosticSystem Check" -191. Turn the ignition OFF.2. RepIace the ECM fuse.3. Turn the ignition ON.Is the SES Iamp on? - Go to"DiagnosticSystem Check" Go to Step 120 Repair the wire between the ECM connector termi-naI B1 and the F5.Is the repair compIete? - Go to"DiagnosticSystem Check" -21 Repair the wire between the ECM connector termi-naI C16 and the F5.Is the repair compIete? - Go to"DiagnosticSystem Check" -22 Repair the wire between the ECM connector termi-naI C4 and fuse F17.Is the repair compIete? - Go to"DiagnosticSystem Check" -23 Repair the open wire between the ECM connectorterminaIs A12 and/or D1 and ground.Is the repair compIete? - Go to"DiagnosticSystem Check" -24 RepIace the ECM.Is the repair compIete? - Go to"DiagnosticSystem Check" -ENGINE CONTROLS 1F -- 431997 DAEWOO T-100 BL3%/$1.1F -- 44 ENGINE CONTROLS1997 DAEWOO T-100 BL3A202F012NO SERVICE ENGINE SOON LAMP (1.3L SOHC AND 1.6L DOHC ITMS-6F)Circuit DescriptionThere shouId aIways be a steady service engine soon(SES) Iamp when the ignition is ON and the engine isstopped. Battery voItage is suppIied directIy to the SESbuIb. The eIectronic controI moduIe (ECM) wiII controIthe SES Iamp and turn it on by providing a ground paththrough the ECM connector terminaI B10 wire to theSES Iamp.Diagnostic Aids- If the engine runs OK, inspect for a fauIty maIfunctionindicator Iamp buIb.- If the engine cranks but wiII not start, check for openfuses and poor ECM connections. ParticuIarIy checkfor ECM ignition and battery feeds, incIuding cIeanand tight ECM ground connections.Test DescriptionThe number(s) beIow refer to step(s) on the diagnostictabIe.4. This step checks for battery voItage in the instru-ment paneI SES Iamp buIb socket.8. This step checks for battery feed to the ECM.9. This step checks for ignition feed to the ECM.22. At this point the SES Iamp wiring is OK. The prob-Iem is a fauIty ECM.ENGINE CONTROLS 1F -- 451997 DAEWOO T-100 BL3No Service Engine Soon Lamp (1.3L SOHC and 1.6L DOHC ITMS-6F)Step Action VaIue(s) Yes No1 Start the engine.Does the engine start? - Go to Step 2 Go to Step 721. Turn the ignition OFF.2. Disconnect the eIectronic controI moduIe (ECM)connectors.3. Turn the ignition ON.4. Connect a test Iight between the ECM connectorterminaI B10 and ground.Is the service engine soon (SES) Iamp on?-Go to Step 13 Go to Step 33 Inspect the kick paneI fuse F11.Is the fuse OK? - Go to Step 4 Go to Step 144 Check the ignition feed to the SES buIb using a voIt-meter.Is the voItage within the vaIue specified? 11-14 v Go to Step 5 Go to Step 155 Inspect the SES buIb.Is the SES buIb OK? - Go to Step 6 Go to Step 166Check for an open or short to voItage in the wire be-tween the ECM connector terminaI B10 and the SESbuIb.Is the probIem found?-Go to Step 17 Go to Step 127 Inspect the ECM fuse F5/F17.Is the probIem found? - Go to Step 18 Go to Step 881. Turn the ignition OFF.2. Disconnect the ECM red connector.3. Connect a test Iight to ECM connector terminaIA6 and ground.Is the test Iight on?-Go to Step 9 Go to Step 1991. Turn the ignition OFF.2. Disconnect the ECM white connector.3. Connect a test Iight between the ECM connectorterminaI C16 and ground.Is the test Iight on?-Go to Step 10 Go to Step 2010 Inspect the ECM connector terminaIs A6 and C16for damage or poor mating.Is the probIem found? -Go to Step 11 Go to Step 1311 Repair the ECM connector terminaI(s) as needed.Is the repair compIete? - Go to"DiagnosticSystem Check_ -12 Inspect for damage or poor mating at the ECM con-nector terminaI B10.Is the probIem found? -Go to Step 11 Go to Step 1313 Check the ECM connector terminaIs B1 and D16 forground.Are the grounds OK? -Go to Step 22 Go to Step 21141. Turn the ignition OFF.2. RepIace the fuse.3. Turn the ignition ON.Is the SES Iamp on? - Go to"DiagnosticSystem Check" Go to Step 41F -- 46 ENGINE CONTROLS1997 DAEWOO T-100 BL3No Service Engine Soon Lamp (1.3L SOHC and 1.6L DOHC ITMS-6F) (Cont'd)Step Action VaIue(s) Yes No15 Repair the open in the ignition feed wire to the SESbuIb.Is the repair compIete? - Go to"DiagnosticSystem Check" -16 RepIace the SES buIb.Is the repair compIete? - Go to"DiagnosticSystem Check" -17 Repair the wire between the ECM connector termi-naI B10 and the SES buIb.Is the repair compIete? - Go to"DiagnosticSystem Check" -181. Turn the ignition OFF.2. RepIace the ECM fuse.3. Turn the ignition ON.Is the SES Iamp on? - Go to"DiagnosticSystem Check" Go to Step 119 Repair the wire between the ECM connector termi-naI A6 and the fuse F5.Is the repair compIete? - Go to"DiagnosticSystem Check" -20 Repair the wire between the ECM connector termi-naI C16 and the fuse F17.Is the repair compIete? - Go to"DiagnosticSystem Check" -21 Repair the open wire between the ECM connectorterminaIs B1 and/or D16 and ground.Is the repair compIete? - Go to"DiagnosticSystem Check" -22 RepIace the ECM.Is the repair compIete? - Go to"DiagnosticSystem Check" -ENGINE CONTROLS 1F -- 471997 DAEWOO T-100 BL3%/$1.1F -- 48 ENGINE CONTROLS1997 DAEWOO T-100 BL3A202F013WILL NOT FLASH SERVICE ENGINE SOON LAMP (1.3L AND 1.5L SOHC IEFI-6)Circuit DescriptionThere shouId aIways be a steady service engine soon(SES) Iamp when the ignition is ON and the enginestopped. Battery ignition voItage is suppIied directIy tothe SES buIb. The eIectronic controI moduIe (ECM) wiIIturn the SES on by grounding the ECMconnector termi-naI C1 wire. With the assembIy Iine diagnostic Iink(ALDL) A and B terminaIs grounded, the SES IampshouId fIash a Code 12 foIIowed by any diagnostictroubIe codes (DTCs) stored in the ECM memory. Asteady SES Iampsuggests a short togroundin the ECMconnector terminaI C1 wire, or an open in the diagnostictest wire. A steady but dim Iight indicates a faiIed quad-driver. The tabIe wiII confirm and suggest the cause.Diagnostic Aids- If the engine runs OK, inspect for a fauIty SES buIb.- If the engine cranks but wiII not start, check for openfuses and poor ECM connections. ParticuIarIy checkfor ECM ignition and battery feeds, incIuding cIeanand tight ECM ground connections.Test DescriptionThe number(s) beIow refer to step(s) on the diagnostictabIe.3. If the SES Iamp is on when the ECM white connec-tor is disconnected, the wire to the ECM connectorterminaI C1 is shorted to ground.ENGINE CONTROLS 1F -- 491997 DAEWOO T-100 BL35. This stepwiII check for an open diagnostic test wire. 11. At this point the SES wiring is OK. The probIem is afauIty ECM.WiII Not FIash Service Engine Soon Lamp (1.3L and 1.5L SOHC IEFI-6)Step Action VaIue(s) Yes No1Turn the ignition ON.Is the service engine soon (SES) Iamp on?-Go to Step 2Go to"No ServiceEngine SoonLamp"21. Turn the ignition OFF.2. Jumper the assembIy Iine diagnostic Iink (ALDL)terminaIs A and B.3. Turn the ignition ON.Does the SES Iamp fIash the diagnostic troubIe code(DTC) 12?-Go to"DiagnosticSystem Check" Go to Step 331. Turn the ignition OFF.2. Disconnect the ECM white connector.3. Turn the ignition ON.Is the SES on?-Go to Step 4 Go to Step 54Repair the short to ground in the wire between theeIectronic controI moduIe (ECM) connector terminaIC1 and the SES buIb.Is the repair compIete? - Go to"DiagnosticSystem Check" -51. Turn the ignition OFF.2. Reconnect the ECM white connector.3. Turn the ignition ON.4. Backprobe the ECM connector terminaI D8 with atest Iight connected to ground.Does the SES fIash DTC 12?-Go to Step 6 Go to Step 86 Check for an open wire between the ECM connectorterminaI D8 and the ALDL terminaI B.Is the probIem found? -Go to Step 10 Go to Step 77 Repair the open wire between the ALDL terminaI Aand ground.Is the repair compIete? - Go to"DiagnosticSystem Check" -8 Check for damage or poor mating at the ECM con-nector terminaI D8.Is the probIem found? -Go to Step 9 Go to Step 119 Repair the ECM connector terminaI D8.Is the repair compIete? - Go to"DiagnosticSystem Check" -10 Repair the wire between the ECM connector termi-naI D8 and the ALDL terminaI B.Is the repair compIete? - Go to"DiagnosticSystem Check" -11 RepIace the ECM.Is the repair compIete? - Go to"DiagnosticSystem Check" -1F -- 50 ENGINE CONTROLS1997 DAEWOO T-100 BL3A202F014WILL NOT FLASH SERVICE ENGINE SOON LAMP(1.3L SOHC AND 1.6L DOHC ITMS-6F)Circuit DescriptionThere shouId aIways be a steady service engine soon(SES) Iamp when the ignition is ON and the enginestopped. Battery ignition voItage is suppIied directIy tothe SES buIb. The eIectronic controI moduIe (ECM) wiIIturn the SES on by grounding the ECMconnector termi-naI B10 wire. With the assembIy Iine diagnostic Iink(ALDL) A and B terminaIs grounded, the SES IampshouId fIash a Code 12 foIIowed by any diagnostictroubIe codes (DTCs) stored in the ECM memory. Asteady SES Iampsuggests a short togroundin the ECMconnector terminaI B10 wire, or an open in the diagnos-tic test wire. A steady but dim Iight indicates a faiIedquad-driver. The tabIe wiII confirm and suggest thecause.Diagnostic Aids- If the engine runs OK, inspect for a fauIty SES buIb.- If the engine cranks but wiII not start, check for openfuses and poor ECM connections. ParticuIarIy checkfor ECM ignition and battery feeds, incIuding cIeanand tight ECM ground connections.Test DescriptionThe number(s) beIow refer to step(s) on the diagnostictabIe.3. If the SES Iamp is on when the ECM red connectoris disconnected, the wire to the ECM connector ter-minaI B10 is shorted to ground.ENGINE CONTROLS 1F -- 511997 DAEWOO T-100 BL35. This stepwiII check for an open diagnostic test wire. 11. At this point the SES wiring is OK. The probIem is afauIty ECM.WiII Not FIash Service Engine Soon Lamp (1.3L SOHC and 1.6L DOHC ITMS-6F)Step Action VaIue(s) Yes No1Turn the ignition ON.Is the service engine soon (SES) Iamp on?-Go to Step 2Go to"No ServiceEngine SoonLamp"21. Turn the ignition OFF.2. Jumper the assembIy Iine diagnostic Iink (ALDL)terminaIs A and B.3. Turn the ignition ON.Does the SES Iamp fIash the diagnostic troubIe code(DTC) 12?-Go to"DiagnosticSystem Check" Go to Step 331. Turn the ignition OFF.2. Disconnect the ECM red connector.3. Turn the ignition ON.Is the SES on?-Go to Step 4 Go to Step 54 Repair the short to ground in the wire between theECM connector terminaI B10 and the SES buIb.Is the repair compIete? - Go to"DiagnosticSystem Check" -51. Turn the ignition OFF.2. Reconnect the ECM red connector.3. Turn the ignition ON.4. Backprobe the ECM connector terminaI B9 with atest Iight connected to ground.Does the SES fIash DTC 12?-Go to Step 6 Go to Step 86 Check for an open wire between the ECM connectorterminaI B9 and the ALDL terminaI B.Is the probIem found? -Go to Step 10 Go to Step 77 Repair the open wire between the ALDL terminaI Aand ground.Is the repair compIete? - Go to"DiagnosticSystem Check" -8 Check for damage or poor mating at the ECM con-nector terminaI B9.Is the probIem found? -Go to Step 9 Go to Step 119 Repair the ECM connector terminaI B9.Is the repair compIete? - Go to"DiagnosticSystem Check" -10 Repair the wire between the ECM connector termi-naI B9 and the ALDL terminaI B.Is the repair compIete? - Go to"DiagnosticSystem Check" -11 RepIace the ECM.Is the repair compIete? - Go to"DiagnosticSystem Check" -1F -- 52 ENGINE CONTROLS1997 DAEWOO T-100 BL3FUEL SYSTEMPRESSURE TESTCircuit DescriptionThe fueI pump is an in-tank fueI pump mounted to a fueIsender assembIy. The fueI pump wiII remain on as Iongas the engine is cranking or running and the eIectroniccontroI moduIe (ECM) is receivingreference puIses fromthe crankshaft position sensor (CPS). If there are noreference puIses, the ECM wiII turn off the fueI pump2 seconds after the ignitionswitch is turnedONor 2 sec-onds after the engine stops running. The fueI pump de-Iivers fueI tothe fueI raiI andthe fueI injectors, where thefueI system pressure is controIIed from 284 to 325 kPa(41 to 47 psi) by the fueI pressure reguIator. The excessfueI is returned to the fueI tank.Test DescriptionThe number(s) beIow refer to step(s) on the diagnostictabIe.2. When the engine is idIing, the intake manifoId vacuumis high. This vacuum is appIied to the fueI pressurereguIator diaphragm, offsetting the spring pressure in-side the fueI pressure reguIator and Iowering the fueIpressure.10. If there is fueI bIeeding back through the fueI returnoutIet, this is due to a fauIty fueI pressure reguIator.14. Another symptomoften present when the fueI injec-tors are Ieaking is hard starting. Leaking fueI injec-tors can cause a fIooding condition.23. FueI Ieaking from the fueI pump inIet is due to afauIty one-way check vaIve in the fueI pump.Caution: The fueI system is under pressure. Toavoid fueI spiIIage and the risk of personaI injuryor fire, it is necessary to reIieve the fueI systempressure before disconnecting the fueI Iines.Caution: Do not pinch or restrict nyIon fueI Iines.Damage to the Iines couId cause a fueI Ieak, resuItCing in possibIe fire or personaI injury.FueI Pressure ReIief Procedure1. Remove the fueI cap.2. Remove the fueI pump fuse EF18 from the enginefuse bIock.3. Start the engine and aIIow the engine to staII.4. Crank the engine for an additionaI 10 seconds.FueI System Pressure TestStep Action VaIue(s) Yes No11. ReIieve the fueI system pressure.2. InstaII a fueI pressure gauge.3. Turn the ignition ON.Is the fueI pressure within the vaIues specified andhoIding steady? 284-325 kPa(41-47 psi) Go to Step 2 Go to Step 521. Disconnect the fueI pressure reguIator vacuumhose.2. Start the engine.3. AIIow the engine to idIe.4. Connect the fueI pressure reguIator vacuumhose.Does the fueI pressure decrease?-System OK Go to Step 331. AIIow the engine to idIe.2. Disconnect the vacuum hose from the fueIpressure reguIator.3. Connect a vacuum pump with a gauge to the fueIpressure reguIator vacuum port.4. AppIy 41-47 kPa (12-14 in. Hg) of vacuum to thefueI pressure reguIator.Does the fueI pressure decrease?-Go to Step 4 Go to Step 1641. Locate and correct the cause of the vacuumrestriction to the fueI pressure reguIator.2. Confirm the operation of the fueI pressurereguIator.Is the repair compIete?-System OK-ENGINE CONTROLS 1F -- 531997 DAEWOO T-100 BL3FueI System Pressure Test (Cont'd)Step Action VaIue(s) Yes No51. ReIieve the fueI system pressure.2. InstaII a fueI pressure gauge.3. Turn the ignition ON.Is the fueI pressure within the vaIues specified butnot hoIding steady?284-325 kPa(41-47 psi) Go to Step 6 Go to Step 176 Inspect the fueI Iines for a Ieak.Is the probIem found? - Go to Step 7 Go to Step 871. RepIace the fueI Iine(s) as needed.2. InstaII a fueI pressure gauge.3. Turn the ignition ON.Is the fueI pressure within the vaIues specified andhoIding steady?284-325 kPa(41-47 psi) System OK-81. Remove the fueI pump assembIy.2. With the fueI pump under pressure, inspect thefueI pump coupIing hoses for Ieaking.Is the probIem found?-Go to Step 9 Go to Step 1091. Tighten or repIace the fueI pump coupIing hosesas needed.2. InstaII a fueI pressure gauge.3. Turn the ignition ON.Is the fueI pressure within the vaIues specified andhoIding steady? 284-325 kPa(41-47 psi) System OK-10 With the fueI system under pressure, inspect the fueIreturn outIet for Ieaking.Is the probIem found? -Go to Step 11 Go to Step 12111. RepIace the fueI pressure reguIator.2. InstaII a fueI pressure gauge.3. Turn the ignition ON.Is the fueI pressure within the vaIues specified andhoIding steady?284-325 kPa(41-47 psi) System OK-12 With the fueI system under pressure, inspect the fueIinIet for Ieaking.Is the probIem found? -Go to Step 13 Go to Step 14131. RepIace the fueI pump assembIy.2. InstaII a fueI pressure gauge.3. Turn the ignition ON.Is the fueI pressure within the vaIues specified andhoIding steady?284-325 kPa(41-47 psi) System OK-141. Remove the fueI raiI and the fueI injectors as anassembIy.2. With the fueI system under pressure, inspect aIIof the fueI injectors for Ieaking.Is the probIem found?-Go to Step 15-151. RepIace the Ieaking fueI injector(s).2. InstaII a fueI pressure gauge.3. Turn the ignition ON.Is the fueI pressure within the vaIues specified andhoIding steady?284-325 kPa(41-47 psi) System OK-1F -- 54 ENGINE CONTROLS1997 DAEWOO T-100 BL3FueI System Pressure Test (Cont'd)Step Action VaIue(s) Yes No161. RepIace the fueI pressure reguIator.2. Disconnect the fueI pressure reguIator vacuumhose.3. Start the engine.4. AIIow the engine to idIe.5. Connect the fueI pressure reguIator vacuumhose.Does the fueI pressure decrease?-System OK-171. ReIieve the fueI system pressure.2. InstaII a fueI pressure gauge.3. Turn the ignition ON.Is the fueI system pressure beIow the vaIues speci-fied and hoIding steady? 284-325 kPa(41-47 psi) Go to Step 13 Go to Step 18181. ReIieve the fueI system pressure.2. InstaII a fueI pressure gauge.3. Turn the ignition ON.Is the fueI system pressure beIow the vaIues speci-fied and not hoIding steady? 284-325 kPa(41-47 psi) Go to Step 19-19 Inspect the fueI Iines for Ieaks.Is the probIem found? - Go to Step 7 Go to Step 20201. Remove the fueI pump assembIy.2. With the fueI pump under pressure, inspect thefueI pump coupIing hoses for Ieaking.Is the probIem found?-Go to Step 9 Go to Step 21211. Remove the fueI pump assembIy.2. With the fueI system under pressure, inspect thefueI return outIet for Ieaking.Is the probIem found? -Go to Step 11 Go to Step 22221. Remove the fueI pump assembIy.2. With the fueI system under pressure, inspect thefueI inIet for Ieaking.Is the probIem found? -Go to Step 13 Go to Step 23231. Remove the fueI raiI and the fueI injectors as anassembIy.2. With the fueI system under pressure, inspect aIIof the fueI injectors for Ieaking.Is the probIem found?-Go to Step 15 Go to Step 13ENGINE CONTROLS 1F -- 551997 DAEWOO T-100 BL3%/$1.1F -- 56 ENGINE CONTROLS1997 DAEWOO T-100 BL3A22F015AFUEL PUMP RELAY CIRCUIT CHECK (1.3L AND 1.5L SOHC IEFI-6)Circuit DescriptionWhen the ignition switch is turned ON, the eIectroniccontroI moduIe (ECM) wiII activate the fueI pump reIayand run the in-tank fueI pump. The fueI pump wiII oper-ate as Iong as the engine is cranking or running and theECM is receiving ignition reference puIses.If there are no reference puIses, the ECM wiII shut offthe fueI pump within 2 seconds after the ignition switchis turned ON.Diagnostic AidsAn intermittent probIem may be caused by a poor con-nection, rubbedthrough wire insuIation, or a broken wireinside the insuIation.Test DescriptionThe number(s) beIow refer to step(s) on the diagnostictabIe.3. This step checks for the ECM providing a ground forthe operation of the fueI pump reIay.7. By confirming that the wiring is OK using Steps 2through 6, it can be determined that the fueI pumpreIay is at fauIt.8. If there is no voItage present at the fueI pump reIayconnector terminaI 86, the probIem is an open I/Pfuse bIock fuse F17, or an open in the wiringbetweenthe fueI pump reIay and the ignition switch.ENGINE CONTROLS 1F -- 571997 DAEWOO T-100 BL39. After determining that there is no ground being pro-vided by the ECM to the fueI pump reIay, the fauIt is either the ECM or the wiring between the ECM andthe fueI pump reIay.FueI Pump ReIay Circuit Check (1.3L and 1.5L SOHC IEFI-6)Step Action VaIue(s) Yes No11. Turn the ignition OFF for 10 seconds.2. Turn the ignition ON.3. Listen for in-tank fueI pump operation.Does the fueI pump operate for the time specified? 2 sec System OK Go to Step 221. Turn the ignition OFF.2. Disconnect the fueI pump reIay.3. Connect a test Iight between the fueI pump reIayconnector terminaI 86 and ground.4. Turn the ignition ON.Is the test Iight on?-Go to Step 3 Go to Step 831. Turn the ignition OFF.2. Connect a test Iight between the fueI pump reIayconnector terminaI 85 and battery positive.3. Turn the ignition ON.4. With the ignition ON, the test Iight shouId Iight forthe time specified.Is the test Iight on? 2 sec Go to Step 4 Go to Step 941. Turn the ignition OFF.2. Connect a test Iight between the fueI pump reIayconnector terminaI 30 and ground.Is the test Iight on? -Go to Step 5 Go to Step 115Check for an open or short to ground in the wirebetween the fueI pump reIay connector terminaI 87and the fueI pump connector terminaI 3.Is the probIem found? -Go to Step 6 Go to Step 761. Repair the wire between the fueI pump reIayconnector terminaI 87 and the fueI pumpconnector terminaI 3.2. InstaII the fueI pump reIay.3. Turn the ignition OFF for 10 seconds.4. Turn the ignition ON.Does the fueI pump operate for the time specified? 2 sec System OK-71. RepIace the fueI pump reIay.2. Turn the ignition OFF for 10 seconds.3. Turn the ignition ON.Does the fueI pump operate for the time specified? 2 sec System OK -8Check for an open wire between the fueI pump reIayconnector terminaI 86 and the ignition switch.Is the probIem found? -Go to Step 13 -9Check for an open wire between the fueI pump reIayconnector terminaI 85 and the eIectronic controImoduIe (ECM) connector terminaI B6.Is the probIem found? -Go to Step 10 Go to Step 121F -- 58 ENGINE CONTROLS1997 DAEWOO T-100 BL3FueI Pump ReIay Circuit Check (1.3L and 1.5L SOHC IEFI-6) (Cont'd)Step Action VaIue(s) Yes No101. RepIace the fuse EF16 or repair the wire betweenthe fueI pump reIay connector terminaI 85 and theECM connector terminaI B6.2. InstaII the fueI pump reIay.3. Turn the ignition OFF for 10 seconds.4. Turn the ignition ON.Does the fueI pump operate for the time specified? 2 sec System OK-111. RepIace the fuse EF16 or repair the wire betweenthe fueI pump reIay connector terminaI 30 and thefuse EF16.2. InstaII the fueI pump reIay.3. Turn the ignition OFF for 10 seconds.4. Turn the ignition ON.Does the fueI pump operate for the time specified? 2 sec System OK-121. RepIace the ECM.2. Turn the ignition OFF for 10 seconds.3. Turn the ignition ON.Does the fueI pump operate for the time specified? 2 sec System OK -131. RepIace the fuse EF17 or repair the wire betweenthe fueI pump reIay connector terminaI 86 and theignition system.2. InstaII the fueI pump reIay.3. Turn the ignition OFF for 10 seconds.4. Turn the ignition ON.Does the fueI pump operate for the time specified? 2 sec System OK-ENGINE CONTROLS 1F -- 591997 DAEWOO T-100 BL3%/$1.1F -- 60 ENGINE CONTROLS1997 DAEWOO T-100 BL3A20F016AFUEL PUMP RELAY CIRCUIT CHECK (1.3L SOHC AND 1.6L DOHC ITMS-6F)Circuit DescriptionWhen the ignition switch is turned ON, the eIectroniccontroI moduIe (ECM) wiII activate the fueI pump reIayand run the in-tank fueI pump. The fueI pump wiII oper-ate as Iong as the engine is cranking or running and theECM is receiving ignition reference puIses.If there are no reference puIses, the ECM wiII shut offthe fueI pump within 2 seconds after the ignition switchis turned ON.Diagnostic AidsAn intermittent probIem may be caused by a poor con-nection, rubbedthrough wire insuIation, or a broken wireinside the insuIation.Test DescriptionThe number(s) beIow refer to step(s) on the diagnostictabIe.3. This step checks for the ECM providing a ground forthe operation of the fueI pump reIay.7. By confirming that the wiring is OK using Steps 2through 6, it can be determined that the fueI pumpreIay is at fauIt.8. If there is no voItage present at the fueI pump reIayconnector terminaI 86, the probIem is an open I/Pfuse bIock fuse F17, or an open in the wiringbetweenthe fueI pump reIay and the ignition switch.ENGINE CONTROLS 1F -- 611997 DAEWOO T-100 BL39. After determining that there is no ground being pro-vided by the ECM to the fueI pump reIay, the fauIt is either the ECM or the wiring between the ECM andthe fueI p