2007 civic hybrid 61snc01_04 - engine electrical (2013_03_08 01_27_35 utc)
DESCRIPTION
2007 Civic HybridTRANSCRIPT
SNC7A000000000J0401ABAT00SNC7A000000000J0401ABAT10
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) (If engine electrical maintenance is required)
INTEGRATED MOTOR ASSIST (IMA) SYSTEM (If engine electrical maintenance is required)
The Civic Hybrid SRS includes a driver’s airbag in the steering wheel hub, a passenger’s airbag in the dashboardabove the glove box, seat belt tensioners in the front seat belt retractors, seat belt buckle tensioners in the front seatbelt buckles, side curtain airbags in the sides of the roof, and side airbags in the front seat-backs. Informationnecessary to safely service the SRS is included in this Service Manual. Items marked with an asterisk ( ) on thecontents page include or are located near SRS components. Servicing, disassembling, or replacing these itemsrequires special precautions and tools, and should be done only by an authorized Honda dealer.
• To avoid rendering the SRS inoperative, which could lead to personal injury or death in the event of a severe frontalor side collision, all SRS service work should be done by an authorized Honda dealer.
• Improper service procedures, including incorrect removal and installation of the SRS, could lead to personal injurycaused by unintentional deployment of the airbags and/or side airbags.
• Do not bump or impact the SRS unit, front impact sensors, or side impact sensors when the ignition switch is ON (II),or for at least 3 minutes after the ignition switch is turned OFF; otherwise, the system may fail in a collision, or theairbags may deploy.
• SRS electrical connectors are identified by yellow color coding. Related components are located in the steeringcolumn, front console, dashboard, dashboard lower panel, in the dashboard above the glove box, in the front seats,in the roof side, and around the floor. Do not use electrical test equipment on these circuits.
IMA components are located in this area. The IMA is a high-voltage system. The high voltage cables and their coversare identified by orange coloring. The safety labels are attached to high voltage and other related parts (see page 1-5).You must be familiar with the IMA system before working around it. Make sure you have read the Service Precautionsin the IMA section before performing repairs or service (see page 12-3).
06/09/19 10:37:37 61SNC010_040_0001
SNC7A000000000J0401ZCAT00
Engine Electrical
Starting System
Ignition System
Charging System
Cruise Control
......................................................................
.............................................................................................
...........................................................................
..........................................................
......................................................................
.............................................................................................
...........................................................................
..........................................................
Component Location Index . 4-2Symptom Troubleshooting Index . 4-3Circuit Diagram . 4-4Starter Circuit Troubleshooting . 4-5Starter Performance Test . 4-9Starter Removal and Installation . 4-10Starter Overhaul . 4-11
....................................................................................................
........................................................................
...............................................................
....................................................................................................
........................................................................
...............................................................
Component Location Index . 4-16Circuit Diagram . 4-17Ignition Timing Inspection . 4-18Ignition Coil Removal/Installation . 4-19Ignition Coil Relay Circuit Troubleshooting . 4-20Spark Plug Inspection . 4-22
Refer to the IMA Section 12
......................................................................
........................................................................................................
....................................................
......................................................................
........................................................................................................
....................................................
Component Location Index . 4-23Symptom Troubleshooting Index . 4-24Circuit Diagram . 4-26Cruise Control Input Test . 4-27Cruise Control Combination Switch
Test/Replacement . 4-29
06/09/19 10:37:37 61SNC010_040_0002
*01
*02
SNC7A00A46500000000DAAT00
4-2
Starting System
Component Location Index
UNDER-DASHFUSE/RELAY BOX
STARTER CUT RELAY
STARTER
BATTERY
Test, page 22-59
Circuit Troubleshooting, page 4-5Performance Test, page 4-9Removal and Installation, page 4-10Overhaul, page 4-11
Test, page 22-58
06/09/19 10:37:39 61SNC010_040_0003
SNC7A00A46500000000HBAT01
Symptom Diagnostic procedure Also check for
4-3
Symptom Troubleshooting Index
Engine does not start(does not crank)
1.2.3.4.5.6.
Check for loose battery terminals or connections.Test the 12 V battery for a low charge (see page 22-58).Check the starter (see page 4-5).Check the starter cut relay (see page 22-59).Check the transmission range switch (see page 14-242).Check the ignition switch or wire (see page 22-61).
Engine cranks, but doesnot start
1.2.3.4.
5.6.7.
Check for PGM-FI DTCs (see page 11-3).Check the fuel pressure (see page 11-361).Check for a plugged fuel filter (see page 11-374).Check for a plugged or damaged fuel line (see page11-363).Check the throttle body (see page 11-380).Check for low engine compression (see page 6-6).Check for a damaged or broken cam chain.
Engine is hard to start 1.2.3.4.
Check for PGM-FI DTCs (see page 11-3).Check the fuel pressure (see page 11-361).Check for a plugged fuel filter (see page 11-374).Check for a plugged or damaged fuel line (see page11-363).
Engine cranks slowly 1.2.3.4.5.
Check for loose battery terminals or connections.Test the 12 V battery for a low charge (see page 22-58).Check the starter for binding (see page 4-5).Check for excessive drag in the engine.Check for excessive drag in the transmission.
06/09/19 10:37:39 61SNC010_040_0004
*01
SNC7A00A46500000000EAAT00
4-4
Starting System
Circuit Diagram
BLK/RED
TRANSMISSIONRANGE SWITCH
41
32
ST HOT in START (III)
BLK/WHT
WHT
WHT
STARTER
YEL
RED WHT
UNDER-HOOD FUSE/RELAY BOX12 VBATTERY
No. 2 (50 A)No. 1 (100 A)
ST
BAT
IGNITION SWITCH
B S
UNDER-DASH FUSE/RELAY BOX
STARTERCUTRELAY(ST CUT)
12 V
BLU/BLK
STC STS
PCM
B12 B13
TRANSMISSIONRANGE SWITCH
LT BLU
A12 A7
H1
C1
1
3
G9 F29
C102
ATPN ATPP
Q15No. 23 (7.5 A)
06/09/19 10:37:40 61SNC010_040_0005
--
+
01
SNC7A00A46500000000FAAT00
-
-
-
-
YES
NO
YES
NO
4-5
Starter Circuit Troubleshooting
NOTE:• Air temperature must be between 59 and 100 °F
(15 and 38 °C) during this procedure.• After the inspection, you must reset the powertrain
control module (PCM). Otherwise, the PCM willcontinue to stop the fuel injectors from functioning.
• The 12 V battery must be in good condition and fullycharged.
1. Hook up the following equipment:
• Ammeter, 0 400 A• Voltmeter, 0 20 V (accurate within 0.1 V)
2. Connect the Honda Diagnostic System (HDS) to thedata link connector (DLC) (see step 2 on page 11-3).
3. Turn the ignition switch ON (II).
4. Make sure the HDS communicates with the vehicleand the PCM. If it doesn’t communicate,troubleshoot the DLC circuit (see page 11-218).
5. Select PGM-FI, INSPECTION, then ALL INJECTORSOFF on the HDS.
6. Remove the No. 61 B IMA 2 (10 A) fuse in theauxiliary under-hood fuse/relay box.
7. Set the parking brake, then with the shift lever inthe N or P position, turn the ignition switch toSTART (III).
The starting system is OK. Go to step 29.
Go to step 8.
8. Check the 12 V battery condition (see page 22-58).Check electrical connections at the battery, thenegative battery cable to body, the engine groundcables, and the starter for looseness and corrosion.Then try starting the engine again.
Repairing the loose connection corrected theproblem. The starting system is OK. Go to step 29.
Check the following:
• If the starter will not crank the engine at all, go tostep 9.
• If the starter cranks the engine erratically or tooslowly, go to step 26.
• If the starter does not disengage from theflywheel ring gear when you release the key,replace the starter, or remove and disassemble it,and check for the following:– Starter solenoid and switch malfunction– Dirty drive gear or damaged overrunning
clutch
(cont’d)
Does the starter crank the engine normally?
Does the starter crank the engine?
06/09/19 10:37:40 61SNC010_040_0006
02
03
-
-
-
-
-
-
-
-
-
-
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
4-6
Starting System
Starter Circuit Troubleshooting (cont’d)
B
A
STARTER CUT RELAY 4P SOCKET
9. Remove the air cleaner assembly (see page 11-381).
10. Remove the intake air duct (see step 9 on page 5-3).
11. Make sure the shift lever is in the P or N position,and set the parking brake. Disconnect the BLK/WHTharness connector (A) from the starter solenoid Sterminal (B). Connect a jumper wire from thebattery positive terminal to the solenoid terminal.
Go to step 12.
Remove the starter, and repair or replace it asnecessary.
12. Check the No. 23 (7.5 A) fuse in the under-dash fuse/relay box.
Reinstall the No. 23 (7.5 A) fuse in the under-dash fuse/relay box. Go to step 13.
Replace the fuse. If the fuse continues to blow,locate and repair the short in the circuit betweenthe under-dash fuse/relay box and the PCM.
13. Remove the starter cut relay from the under-dashfuse/relay box, and test it (see page 22-59).
Go to step 14.
Replace the starter cut relay.
14. Check the ignition switch (see page 22-61).
Go to step 15.
Replace the ignition switch.
15. Measure the voltage between starter cut relay 4Psocket terminal No. 2 and body ground with theignition switch in START (III).
Go to step 16.
Repair open in the wire between the under-dash fuse/relay box and the ignition switch. If thewire is OK, replace the under-dash fuse/relaybox.
Terminal side of female terminals
Does the starter crank the engine?
Is the fuse OK ?
Is the relay OK ?
Is the ignition switch OK ?
Is there battery voltage?
06/09/19 10:37:41 61SNC010_040_0007
04
05
06
-
-
-
-
-
-
YES
NO
YES
NO
YES
NO
4-7
STARTER CUT RELAY 4P SOCKET
STARTER CUT RELAY 4P SOCKET
JUMPERWIRE
STARTER CUT RELAY 4P SOCKET
16. Check for continuity between starter cut relay 4Psocket terminal No. 1 and body ground.
Repair short to ground in the wire betweenthe under-dash fuse/relay box and the starter.
Go to step 17.
17. Connect the BLK/WHT harness connector to thestarter solenoid S terminal.
18. Connect the starter cut relay 4P socket terminalsNo. 1 and No. 2 with a jumper wire, and turn theignition switch to START (III).
Go to step 19.
Repair open in the wire between the under-dash fuse/relay box and the starter.
19. Remove the jumper wire.
20. Measure the voltage between starter cut relay 4Psocket terminal No. 3 and body ground with theignition switch turned to START (III).
Go to step 21.
Replace the under-dash fuse/relay box.
21. Reinstall the starter cut relay.
22. Turn the ignition switch ON (II), and jump the SCSline with the HDS, then turn the ignition switch OFF.
NOTE: This must be done to protect the PCM fromdamage.
23. Disconnect PCM connector A (44P).
(cont’d)
Terminal side of female terminals
Terminal side of female terminals
Terminal side of female terminalsIs there continuity?
Does the starter crank the engine?
Is there battery voltage?
06/09/19 10:37:41 61SNC010_040_0008
+
07
08
-
-
-
-
-
-
-
-
YES
NO
YES
NO
YES
NO
YES
NO
4-8
Starting System
Starter Circuit Troubleshooting (cont’d)
PCM CONNECTOR A (44P)
STC(WHT)
STS (LT BLU)
PCM CONNECTOR A (44P)
24. Measure the voltage between PCM connectorterminal A12 and body ground with the ignitionswitch turned to START (III).
Go to step 25.
Repair open in the WHT wire between theunder-dash fuse/relay box and the PCM. If the wireis OK, replace the under-dash fuse/relay box.
25. Measure the voltage between PCM connectorterminal A7 and body ground with the ignitionswitch turned to START (III).
Update the PCM if it does not have the latestsoftware (see page 11-7), or substitute a known-good PCM (see page 11-8), then recheck. If thesymptom/indication goes away with a known-goodPCM, replace the original PCM (see page 11-241).
Check for open in the wire(s) between theunder-dash fuse/relay box and the PCM.
26. While cranking the engine, check the crankingvoltage and current draw.
Go to step 27.
Replace the starter, or remove anddisassemble it, and check for the following:
• Drag in the starter armature• Shorted armature winding• Excessive drag in the engine
27. Check the engine speed while cranking the engine.
Go to step 28.
Replace the starter, or remove anddisassemble it, and check for the following:
• Open circuit in starter armature commutatorsegments
• Excessively worn starter brushes• Open circuit in the starter brushes• Dirty or damaged helical splines or drive gear• Faulty overrunning clutch
28. Remove the starter, and inspect its drive gear andflywheel ring gear for damage. Replace anydamaged parts.
29. Select PCM reset (see page 11-4) to cancel ALLINJECTORS OFF on the HDS.
30. Install the No. 61 B IMA 2 (10 A) fuse in theauxiliary under-hood fuse/relay box.
31. If the IMA battery level gauge (BAT) displays nosegment, start the engine, and hold it between3,500 rpm and 4,000 rpm without load (in Park orNeutral) until the BAT displays at least threesegments.
32. Do the start clutch pressure control calibrationprocedures (see page 14-204).
Terminal side of female terminals
Terminal side of female terminals
Is there battery voltage?
Is there battery voltage?
Is the cranking voltage greater than or equal to8.5 V and is the current draw less than or equal to350 A?
Is the engine speed above 100 rpm?
06/09/19 10:37:42 61SNC010_040_0009
01
02
03
SNC7A00A46500056901FEAT00
Specification
Electric Current: 80 A or less
4-9
Starter Performance Test
BODY
(GROUND)
S
BODY
(GROUND)
STARTER
S
B
1. Disconnect the BLK/WHT harness connector fromthe S terminal.
2. Make a connection for this test using the thickest(gauge) wire possible (preferably the same gaugeas used on the vehicle).
NOTE: To avoid damaging the starter, never leavethe battery connected for more than 5 seconds.
3. Connect the battery as shown. If the starter pinionmoves out, it is working properly.
4. Disconnect the negative battery terminal from thebody as shown. If the pinion retracts immediately,it is working properly.
5. Remove the starter (see page 4-10).
6. Firmly clamp the starter in a vise.
7. Connect the starter to the battery as shown, andmake sure the motor turns and keeps rotating.
8. If the electric current meets the specification whenthe battery voltage is at 11.5 V, the starter isworking properly.
06/09/19 10:37:43 61SNC010_040_0010
01
02
SNC7A00A46500056901KDAT00
Removal Installation
4-10
Starting System
Starter Removal and Installation
A
B
C
A
B
8 x 1.25 mm9 N·m(0.9 kgf·m, 7 lbf·ft)
6 x 1.0 mm9.8 N·m (1.0 kgf·m, 7.2 lbf·ft)
10 x 1.25 mm44 N·m(4.5 kgf·m, 33 lbf·ft)
C
1. Make sure you have the anti-theft codes for theaudio system and navigation system (if equipped).
2. Disconnect the negative cable from the battery first,then disconnect the positive cable.
3. Remove the battery and battery box.
4. Remove the air cleaner assembly (see page 11-381).
5. Remove the intake air duct (see step 9 on page 5-3).
6. Disconnect the starter cable (A) from the B terminaland the BLK/WHT harness connector (B) from the Sterminal, then remove the upper radiator hosebracket (C).
7. Remove the two bolts holding the starter, thenremove the starter.
1. Install the starter, then install the starter mountingbolts.
2. Connect the starter cable (A) to the B terminal andthe BLK/WHT harness connector (B) to the Sterminal, then install the upper radiator hosebracket (C). Make sure the crimped side of the ringterminal is facing out.
3. Install the intake air duct (see step 53 on page 5-20).
4. Install the air cleaner assembly (see page 11-381).
5. Install the battery and battery box.
6. Clean the battery posts and cable terminals, thenassemble them, and apply grease to preventcorrosion.
7. Start the engine to make sure the starter operatesproperly.
8. Enter the anti-theft codes for the audio system andnavigation system (if equipped).
9. Set the clock.
10. If the IMA battery level gauge (BAT) displays nosegments, start the engine, and hold it between3,500 rpm and 4,000 rpm without load (in Park orNeutral) until the BAT displays at least threesegments.
06/09/19 10:37:44 61SNC010_040_0011
01
SNC7A00A46500056901LAAT00
Disassembly/Reassembly
4-11
Starter Overhaul
INTERNAL GEAR UNIT
SWITCH PLUNGER
GEAR PLUNGER
GEAR COVER ASSEMBLY
PUSH NUT
BRUSH HOLDER
BRUSH SPRING
SWITCH SHAFT
DRIVE PLATE
PLANETARY GEAR
ARMATURE
ARMATURE HOUSING
END COVER
(cont’d)
(Apply molybdenumdisulfide.)
(Apply molybdenumdisulfide.)
06/09/19 10:37:44 61SNC010_040_0012
# #
02
03
04
05
- -
Armature Inspection and Test
Commutator Diameter
Standard (New): 28.0 28.1 mm (1.102 1.106 in.)
Service Limit: 27.5 mm (1.083 in.)
Commutator Runout
Standard (New): 0.02 mm (0.001 in.) max.
Service Limit: 0.05 mm (0.002 in.)
4-12
Starting System
Starter Overhaul (cont’d)
A
B
A
1. Remove the starter (see page 4-10).
2. Disassemble the starter as shown at the beginningof this procedure.
3. Inspect the armature for wear or damage fromcontact with the permanent magnet. If there is wearor damage, replace the armature.
4. Check the commutator (A) surface. If the surface isdirty or burnt, resurface it with an emery cloth or alathe to the following specifications, or reconditionwith 500 or 600 sandpaper (B).
5. Check the commutator diameter. If the diameter isbelow the service limit, replace the armature.
6. Measure the commutator (A) runout.
• If the commutator runout is within the servicelimit, check the commutator for carbon dust orbrass chips between the segments.
• If the commutator runout is not within the servicelimit, replace the armature.
06/09/19 10:37:45 61SNC010_040_0013
06
07
08
09
- -Commutator Mica Depth
Standard (New): 0.40 0.50 mm (0.016 0.020 in.)
Service Limit: 0.15 mm (0.006 in.)
4-13
A
B CD
C
B
A
A
BC
7. Check the mica depth (A). If the mica is too high (B),undercut the mica with a hacksaw blade to theproper depth. Cut away all the mica (C) betweenthe commutator segments. The undercut shouldnot be too shallow, too narrow, or V-shaped (D).
8. Check for continuity between the segments of thecommutator. If there is an open circuit between anysegments, replace the armature.
9. Place the armature (A) on an armature tester (B).Hold a hacksaw blade (C) on the armature core. Ifthe blade is attracted to the core or vibrates whilethe core is turned, the armature is shorted. Replacethe armature.
10. Use an ohmmeter to check for continuity betweenthe commutator (A) and the armature coil core (B),and between the commutator and the armatureshaft (C). If there is continuity, replace the armature.
(cont’d)
06/09/19 10:37:46 61SNC010_040_0014
+-
10
11
12
- -
Starter Brush Inspection
Brush Length
Standard (New): 11.1 11.5 mm (0.44 0.45 in.)
Service Limit: 4.3 mm (0.17 in.)
Starter Brush Holder Test
Planetary Gear Inspection
4-14
Starting System
Starter Overhaul (cont’d)
A
B
B
A
11. Measure the brush length. If it is not within theservice limit, replace the brush holder assembly.
12. Check for continuity between the ( ) brush (A) and( ) brush (B). If there is continuity, replace thebrush holder assembly.
13. Check the planetary gears (A) and ring gear (B).Replace them if they are worn or damaged.
06/09/19 10:37:47 61SNC010_040_0015
##13
14
Overrunning Clutch Inspection Starter Reassembly
4-15
B
A
A
E
F
D
C
B
14. Holding the drive gear (A), turn the gear shaft (B)clockwise. Check that the drive gear comes out tothe other end. If the drive gear does not movesmoothly, replace the gear cover assembly.
15. Holding the drive gear, turn the gear shaftcounterclockwise. The gear shaft should rotatefreely. If the gear shaft does not rotate smoothly,replace the gear cover assembly.
16. If the starter drive gear is worn or damaged,replace the overrunning clutch assembly; the gearis not available separately. Check the condition ofthe flywheel ring gear. Replace it if the starter drivegear teeth are damaged.
17. Install the brush into the brush holder, and set thearmature (A) in the brush holder (B).
NOTE: To seat the new brushes, slip a strip of 500or 600 sandpaper, with the grit side up, betweenthe commutator and each brush, and smoothlyrotate the armature. The contact surface of thebrushes will be sanded to the same contour as thecommutator.
18. Squeezing a spring (C), insert it in the hole on thebrush holder, and push it until it bottoms. Repeatthis for the other three springs (D, E, and F).
19. Install the armature and brush holder assemblyinto the housing.
NOTE: Make sure the armature stays in the holder.
06/09/19 10:37:48 61SNC010_040_0016
*01
SNC7A00A26100000000DAAT00
4-16
Ignition System
Component Location Index
UNDER-HOOD FUSE/RELAY BOX
IGNITION COIL RELAY
SPARK PLUG IGNITION COIL
Circuit Troubleshooting,page 4-20
Inspection, page 4-22 Ignition Timing Inspection, page 4-18Removal/Installation, page 4-19
06/09/19 10:37:49 61SNC010_040_0017
*01
SNC7A00A26100000000EAAT00
4-17
Circuit Diagram
PCM
C18
5 V
C17 C16 C15
IGPLS4I IGPLS3I IGPLS2I IGPLS1I
YEL YEL YEL WHT
No. 1BLK
ICM
C23C24
ICM
BLKNo. 2
WHT/GRNWHT/BLK
C25
No. 3BLK
ICM
YELWHT/BLU
ICM
BLKNo. 4
C19
SPARKPLUGS
EXHAUSTSIDEIGNITIONCOILS
A6
YEL
2
1 3
IGPLS1EIGPLS2EIGPLS3EIGPLS4E MRLY
6C101 C101
8
F9 E10 E9
222
1 31 31 3
1 31 31 31 3
UNDER-HOOD FUSE/RELAY BOX
(15 A)No. 14
BLK/WHT
No. 1
YEL/GRN
G102
No. 4
BRN
ICM
WHT/RED
ICM
BRN
No. 3
BLK/RED BLU/RED
No. 2
BRN
ICM ICM
BRN
BLK/WHT
BLU
No. 18 (20 A)
IGNITION COIL RELAY (IG COIL)
No. 13(15 A)
ICM: Ignition Control Module
SPARKPLUGS
INTAKESIDEIGNITIONCOILS
12 VBATTERY
2 1
34
BLK/WHTBLK/WHTBLK/WHT
WHTGRN
2222
06/09/19 10:37:50 61SNC010_040_0018
01
02
SNC7A00A26100000000MAAT00
±Ignition Timing
10 2 ° BTDC (RED mark (B)) at idle in Park or
Neutral
4-18
Ignition System
Ignition Timing Inspection
A B
1. Connect the Honda Diagnostic System (HDS) to thedata link connector (DLC) (see step 2 on page 11-3),and check for DTCs. If a DTC is present, diagnoseand repair the cause before inspecting the ignitiontiming.
2. Turn the ignition switch ON (II).
3. Make sure the HDS communicates with the vehicleand the powertrain control module (PCM). If itdoesn’t communicate, go to the DLC circuittroubleshooting (see page 11-218).
4. Start the engine. Hold the engine speed at3,000 rpm with no load (in Park or Neutral) until theradiator fan comes on, then let it idle.
5. Check the idle speed (see page 11-342).
6. Jump the SCS line with the HDS.
7. Connect the timing light to the exhaust side No. 1ignition coil harness.
8. Aim the light toward the pointer (A) on the camchain case. Check the ignition timing under a noload condition (headlights, blower fan, rear windowdefogger, and air conditioner are turned off).
9. If the ignition timing differs from the specification,check the cam timing. If the cam timing is OK,update the PCM if it does not have the latestsoftware (see page 11-7), or substitute a known-good PCM (see page 11-8), then recheck. If thesystem works properly, and the PCM wassubstituted, replace the original PCM (see page11-241).
10. Disconnect the HDS and the timing light.
06/09/19 10:37:51 61SNC010_040_0019
01
SNC7A00A26100034101KDAT00
4-19
Ignition Coil Removal/Installation
6 x 1.0 mm9.8 N·m (1.0 kgf·m, 7.2 lbf·ft)
A
B
1. Remove the engine cover (see step 7 on page 5-3).
2. Disconnect the ignition coil connectors, thenremove the intake side ignition coils (A) andexhaust side ignition coils (B).
3. Install the ignition coils in the reverse order ofremoval.
06/09/19 10:37:51 61SNC010_040_0020
*01
*02
*03
SNC7A00A26100034112FAAT00
-
-
-
-
-
-
-
-
-
-
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
4-20
Ignition System
Ignition Coil Relay Circuit Troubleshooting
IGNITION COIL RELAY 4P SOCKET
IGNITION COIL RELAY 4P SOCKET
EACH IGNITION COIL 3P CONNECTOR
IGNITION COIL 3P CONNECTOR
1. Check the No. 18 (20 A) fuse in the under-hoodfuse/relay box.
Go to step 2.
Replace the fuse. If the fuse continues to blow,locate and repair the short in the circuit betweenthe under-hood fuse/relay box and the ignitioncoils.
2. Install the No. 18 (20 A) fuse in the under-hood fuse/relay box.
3. Remove the ignition coil relay from the under-hoodfuse/relay box, and test it (see page 22-59).
Go to step 4.
Replace the ignition coil relay.
4. Measure the voltage between ignition coil relay 4Psocket terminal No. 2 and body ground, thenterminal No. 4 and body ground.
Go to step 5.
Replace the under-hood fuse/relay box.
5. Check for continuity between ignition coil relay 4Psocket terminal No. 1 and each ignition coil 3Pconnector terminal No. 3.
Go to step 6.
Repair open in the wire between ignition coilrelay 4P socket terminal No. 1 and each ignition coil3P connector terminal No. 3.
6. Check for continuity between each ignition coil 3Pconnector terminal No. 2 and body ground.
Go to step 7.
Repair open in the wire between ignition coil3P connector terminal No. 2 and body ground.
Terminal side of female terminals
Terminal side offemale terminals
Wire side offemale terminals
Wire side of female terminals
Is the fuse OK ?
Is the relay OK ?
Is there battery voltage?
Is there continuity?
Is there continuity?
06/09/19 10:38:15 61SNC010_040_0021
*04
*05
-
-
-
-
YES
NO
YES
NO
4-21
IGNITION COIL RELAY 4P SOCKET
MRLY (GRN)
IGNITION COIL RELAY 4P SOCKET
PCM CONNECTOR A (44P)
7. Connect the Honda Diagnostic System (HDS) to thedata link connector (DLC) (see step 2 on page 11-3).
8. Turn the ignition switch ON (II).
9. Make sure the HDS communicates with the vehicleand the powertrain control module (PCM). If itdoesn’t communicate, go to the DLC circuittroubleshooting (see page 11-218).
10. Jump the SCS line with the HDS, then turn theignition switch OFF.
NOTE: This step must be done to protect the PCMfrom damage.
11. Disconnect PCM connector A (44P).
12. Check for continuity between ignition coil relay 4Psocket terminal No. 3 and body ground.
Repair short to ground in the wire betweenignition coil relay 4P socket terminal No. 3 and thePCM (A6).
Go to step 13.
13. Check for continuity between ignition coil relay 4Psocket terminal No. 3 and PCM connector terminalA6.
The system is OK at this time. Check forloose or poor connections at the ignition coil relayand the PCM (A6).
Repair open in the wire between ignition coilrelay 4P socket terminal No. 3 and the PCM (A6).
Terminal side of female terminals
Terminal side offemale terminals
Terminal side of female terminals
Is there continuity?
Is there continuity?
06/09/19 10:38:16 61SNC010_040_0022
01
02
03
SNC7A00A26100055901MAAT00
- -Electrode Gap
Standard (New): 1.0 1.1 mm (0.039 0.043 in.)
Spark Plugs: ILFR6J11K (NGK)
SK20HPR-L11 (DENSO)
4-22
Ignition System
Spark Plug Inspection
• Improper gap• Oil-fouling• Carbon deposits• Cracked centerelectrode insulator
Worn or deformedelectrodes
Damagedgasket
Crackedinsulator
A
A
1. Remove the spark plugs and inspect the electrodesand the ceramic insulator.
• Burned or worn electrodes may be caused by:– Advanced ignition timing– Loose spark plug– Plug heat range too hot– Insufficient cooling
• Fouled plugs may be caused by:– Retarded ignition timing– Oil in combustion chamber– Incorrect spark plug gap– Plug heat range too cold– Excessive idling/low speed running– Clogged air cleaner element– Deteriorated ignition coils
2. If the spark plug electrode is dirty or contaminated,clean the electrode with a plug cleaner.
NOTE:• Do not use a wire brush or scrape the iridium
electrode since this will damage the electrode.• When using a sandblaster spark plug cleaner, do
not clean for more than 20 seconds to avoiddamaging the electrode.
3. Do not adjust the gap of iridium tip plugs (A);replace the spark plug if the gap is out ofspecification.
4. Replace the plug at the specified interval, or if thecenter electrode is rounded (A). Use only the listedspark plugs.
5. Apply a small amount of anti-seize compound tothe plug threads, and screw the plugs into thecylinder head, finger-tight. Torque them to 18 N·m(1.8 kgf·m, 13 lbf·ft).
06/09/19 10:38:17 61SNC010_040_0023
*01
*02
SNC7A00A14500000000DAAT00
[ ][ ]
4-23
Cruise Control
Component Location Index
BRAKE PEDAL POSITION SWITCH
CRUISE MAIN INDICATORBuilt into gauge control module (TACH) CRUISE CONTROL INDICATOR
Built into gauge control module (TACH)
CRUISE CONTROLCOMBINATION SWITCH
POWERTRAINCONTROL MODULE (PCM)
TRANSMISSION RANGE SWITCH
Test, page 22-158Pedal Height Adjustment, page 19-6
Test/Replacement, page 4-29
Cruise Control Input Test,page 4-27
Test, page 14-242
06/09/19 10:38:18 61SNC010_040_0024
SNC7A00A14500000000HBAT01
Symptom Diagnostic procedure Also check for
4-24
Cruise Control
Symptom Troubleshooting Index
•
•
Cruise control cannot beset
1.2.
3.4.
Check for PGM-FI and body DTCs.Check the No. 12 (15 A) fuse in the under-hood fuse/relay box, and No. 3 (10 A) fuse in the under-dash fuse/relay box.Do the cruise control input test (see page 4-27).Do the cruise control combination switch test (see page4-29).
Cruise control can be set,but the cruise mainindicator does not comeon
1.2.
Check for PGM-FI and body DTCs.Do the gauge control module (TACH) self-diagnosticfunction procedure (see page 22-209).
Faulty gauge controlmodule (TACH)
Cruise control can be set,but the cruise controlindicator does not comeon
1.2.
3.
Check for PGM-FI and body DTCs.Do the gauge control module (TACH) self-diagnosticfunction procedure (see page 22-209).Do the cruise control input test (see page 4-27).Test the cruise control indicator signal input.
Faulty gauge controlmodule (TACH)
Vehicle does notdecelerate or accelerateaccordingly when the set/decel or resume/accelswitch is pressed
1.2.
3.
Check for PGM-FI and body DTCs.Do the cruise control input test (see page 4-27).Test the cruise control set/decel, resume/accel switchsignal input.Do the cruise control combination switch test (see page4-29).
Open circuit, loose ordisconnectedterminals: LT GRN orORN
Set speed does notcancel when the brakepedal is pressed
1.2.
3.
Check for PGM-FI and body DTCs.Do the cruise control input test (see page 4-27).Test the brake pedal position switch signal input.Do the brake pedal position switch test (see page22-158).
Short to power onthe BRN wireFaulty brake pedalposition switch
Set speed does notcancel when the cruisecontrol main switch ispressed
1.2.
3.
Check for PGM-FI and body DTCs.Do the cruise control input test (see page 4-27).Test the cruise control main switch signal input.Do the cruise control combination switch test (see page4-29).
Short to ground on theYEL wire
Set speed does notcancel when the cancelswitch is pressed
1.2.
3.
Check for PGM-FI and body DTCs.Do the cruise control input test (see page 4-27).Test the cruise control cancel switch signal input.Do the cruise control combination switch test (see page4-29).
Open circuit, loose ordisconnectedterminals: LT GRN orORN
06/09/19 10:38:19 61SNC010_040_0025
Symptom Diagnostic procedure Also check for
4-25
•
•
Set speed will notresume when theresume/accel switch ispressed (with the cruisecontrol main switchturned on, and set speedtemporarily canceled bypressing the brake pedal)
1.2.
3.
4.
Check for PGM-FI and body DTCs.Check the brake pedal position switch adjustment.(see page 19-6).Do the cruise control input test (see page 4-27).Test the cruise control resume/accel switch signal input.Test the brake pedal position switch signal input.Do the cruise control combination switch test (see page4-29).
Faulty brake pedalposition switchOpen circuit, loose ordisconnectedterminals: ORN wire
06/09/19 10:38:19 61SNC010_040_0026
*01
SNC7A00A14500000000EAAT00
+ -
4-26
Cruise Control
Circuit Diagram
UNDER-HOOD FUSE/RELAY BOX
12 VBATTERY No. 1 (100 A) No. 21 (15 A)
No. 12(15 A)
HORN RELAY
No. 19 (15 A)
No. 2 (50 A)
WHT
BATIG1
IG1 HOT inON (II) andSTART (III)
ELECTRONIC THROTTLE CONTROLSYSTEM (ETCS) CONTROL RELAY
RED
No. 3(10 A)
3
4
2
4
2
3
1
1
CABLEREEL
HORNSWITCH
ORN
HORN
LT GRN WHT/GRN
BRAKEPEDALPOSITIONSWITCH
12MICUBRAKE LIGHTS
3
GRN
LT BLU
CRUISECONTROLDIMMINGCIRCUIT
RED
VCC3
TP SENSOR A/B
THROTTLEACTUATOR
THROTTLE BODY
OUTPUT SHAFT(COUNTERSHAFT)SPEED SENSOR
TRANS-MISSIONRANGESWITCH
TAILLIGHTRELAY
IGNITIONSWITCH
TPSA
CRUISE MAININDICATOR
CRUISE CONTROLINDICATOR
1 2
4 31 2
4
PGM-FI MAIN RELAY (FI-MAIN)
3
WHT
WHT
UNDER-DASHFUSE/RELAYBOX
CABLEREEL
11
CRUISE CONTROLCOMBINATIONSWITCHMAIN
CPU
WARNINGDRIVERCIRCUIT
F-CANTRANSCEIVER
19
1
4 5 6 7
ORN YELLT GRN
14 10 11 9
LT GRN
WHT
RED WHT
TPSB SG3 ETCSM ETCSM ATPFWD NDN
CANH CANL BKSW BKSWNC MRLY ETCSRLY IG1ETCS
PCM
BRN
YEL
WHT
GRY
YEL
5 V
12 V
GAUGE CONTROL MODULE (TACH)
G504
A36 A37 A40 A13 A6 A20 C1
C12 C20 C21 C39 C4 C3 B28 C10
BLU YEL/RED YELGRN RED/BLK RED/BLU
H1 F9 F5 E1
C101
3
BLK
F15
D2
BLU
6
3
WHT
564312
2
10
D8
1
9 8 7 6
SET/DECEL
CAN-CEL
RESUME/ACCEL
06/09/19 10:38:20 61SNC010_040_0027
SNC7A00A14500000000FCAT00
Signal to be tested Test condition Parameter: Desired result Possible cause if result is not obtained
4-27
Cruise Control Input Test
1. Connect the Honda Diagnostic System (HDS) to the data link connector (DLC) (see step 2 on page 11-3).
2. Turn the ignition switch ON (II).
3. Make sure the HDS communicates with the vehicle and the powertrain control module (PCM). If it doesn’tcommunicate, go to the DLC circuit troubleshooting (see page 11-218).
4. Go to PGM-FI, and check for DTCs.
5. Do the following tests while monitoring parameters in the PGM-FI DATA LIST with the HDS.
NOTE: Intermittent failures are often caused by loose circuit connections. While monitoring cruise control inputs,flex their circuits, and note if any of the test results change.
••
•
•
••
•
••
•
••
•
Brake switchsignal
Brake pedal pressed,then released
CRUISE BRAKE SWshould indicate OFFwhen the brake pedal ispressed and ON whenthe brake pedal isreleased.
Faulty brake pedal position switchBlown No. 3 (10 A) fuse in the under-dash fuse/relay boxAn open in the wire between the PCMand the brake pedal position switchA wire shorted to ground between thePCM and the brake pedal position switch
Transmissionrange switchsignal
Shift lever in D SHIFT/CLUTCH SWshould indicate ON in P,R, N, and L and OFF inD and S.
Faulty transmission range switchAn open in the wire between the PCMand the transmission range switchA wire shorted to ground between thePCM and the transmission range switch
Cruise controlmain switchsignal
Cruise control mainswitch ON and OFF
CRUISE MASTER(MAIN) SW shouldindicate ON when thecruise control mainswitch is turned on andOFF when the cruisecontrol main switch isturned off.
Faulty cruise control main switchAn open in the wire between the gaugecontrol module (TACH) and the cruisecontrol main switchA wire shorted to ground between thegauge control module (TACH) and thecruise control main switch
Set switchsignal
Set/decel switchpressed and released
CRUISE SET SWshould indicate ONwhen the set/decelswitch is pressed andOFF when the set/decelswitch is released.
Faulty cruise control combination switchAn open in the wire between the gaugecontrol module (TACH) and the cruisecontrol combination switchA wire shorted to ground between thegauge control module (TACH) and thecruise control combination switch
(cont’d)
06/09/19 10:38:20 61SNC010_040_0028
Signal to be tested Test condition Parameter: Desired result Possible cause if result is not obtained
4-28
Cruise Control
Cruise Control Input Test (cont’d)
••
•
Resumeswitch signal
Resume/accel switchpressed and released
CRUISE RESUME SWshould indicate ONwhen the resume/accelswitch is pressed andOFF when the resume/accel switch is released.
Faulty cruise control combination switchAn open in the wire between the gaugecontrol module (TACH) and the cruisecontrol combination switchA wire shorted to ground between thegauge control module (TACH) and thecruise control combination switch
Cancel switchsignal
Cancel switchpressed and released
CRUISE CANCEL SWshould indicate ONwhen the cancel switchis pressed and OFFwhen the cancel switchis released.
Faulty cruise control combination switch
Cruise controlindicatorsignal
Start the engine, turnthe cruise controlmain switch on, anddrive the vehicleabove 25 mph(40 km/h). Set andcancel the cruisecontrol.
CRUISE INDICATORshould indicate ONwhen the cruise controlis set and OFF whenthe cruise control iscanceled.
Faulty gauge control module (TACH)
06/09/19 10:38:21 61SNC010_040_0029
01
02
03
*01
SNC7A00A14500017625FHAT00
4-29
Cruise Control Combination Switch Test/Replacement
A
Terminal
Position
Cruise controlmain switch (ON)
6 7 3 4 5
Set/decel(PRESSED)
Resume/accel(PRESSED)
Cancel(PRESSED)
Cruise controlmain switch (OFF)
SRS components are located in this area. Review theSRS component locations (see page 24-11), and theprecautions and procedures (see page 24-13), beforedoing repairs or service.
1. Remove the driver’s airbag (see page 24-160).
2. Remove the eight screws.
3. Remove the combination switch (A).
4. Check for continuity between the terminals in eachswitch position according to the table.
• If there is continuity, and it matches the table, butswitch failure occurred on the cruise controlinput test, check and repair the wire harness onthe switch circuit.
• If there is no continuity in one or more positions,replace the switch.
Wire side offemale terminals
06/09/19 10:38:22 61SNC010_040_0030