valores vw jetta - automotriz en video

82
01-165 Measuring Value Block Safety precautions Observe following if test and measuring instruments are required during a test drive: Test and measuring instruments must be secured to rear seat and operated by a 2nd person from this location. If test and measuring instruments are operated from front passenger's seat and the vehicle is involved in an accident, there is a possibility that the person sitting in this seat may receive serious injuries when the airbag is triggered. Página 1 de 82 Measuring Value Block 02/06/2003 http://127.0.0.1:8080/vw/servlet/Display?action=Goto&type=repair&id=VW.A4.FU05.0...

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Page 1: Valores VW Jetta - Automotriz En Video

01-165

Measuring Value Block Safety precautions

Observe following if test and measuring instruments are required during a test drive:

Test and measuring instruments must be secured to rear seat and operated by a 2nd person from this location.

If test and measuring instruments are operated from front passenger's seat and the vehicle is involved in an accident, there is a possibility that the person sitting in this seat may receive serious injuries when the airbag is triggered.

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Read Measuring Value Block (function 08)

VAG1551 scan tool with VAG1551/3B cable

Test conditions

Coolant temperature must be at least 80 C, display group 04, display zone 3.

All electrical consumers, e.g. lights and rear window heating must be switched off

If the vehicle is equipped with an air conditioner, this must be switched off.

On vehicles with automatic transmission selector lever in "P" or "N" position

No DTCs must be stored in DTC memory Page 01-21 , checking DTC memory

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Work sequence

- Connect VAG1551 scan tool (VAG1552). Start engine and select "Address word" 01 of engine control module. Engine must be running at idling speed. (Connecting scan tool and selecting engine control module Page 01-12 .)

Rapid data transfer HELP

Select function XX Indicated on display:

- Press keys 0 and 8 for function "Read Measuring Value Block" and confirm entry with Q key.

Read Measuring Value Block HELP

Input display group number XXX Indicated on display:

Note:

The display group number 1 is an example, to illustrate the sequence.

- Select required display group number.

- Press keys 0, 0 and 1 for "Display group number 1" and confirm entry with Q key.

Read Measuring Value Block 1

1 2 3 4

Indicated on display: (1 to 4 Display zones)

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Note:

To change to another display group proceed as follows:

Display group VAG1551 VAG1552

Higher Press key 3 Press key

Lower Press key 1 Press key

Skip Press key C Press key C

- If specifications in all display zones are obtained, press key.

Rapid data transfer HELP

Select function XX Indicated on display:

Note:

Measured value blocks which are not described in this chapter are currently only intended for the research and development and production. The values displayed are not relevant for service department troubleshooting.

- Press keys 0 and 6 for "End data transfer" function and confirm input with Q key.

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Measuring value blocks, evaluating display groups 0 to 9 (Basic functions)

Display group 1 (Basic functions)

Engine running at idling speed

Read Measuring Value Block 1

Indicated on display

xxxx RPM

xx.x C

x.x% xxxxxxxx

1 2 3 4 Display zones Specification Evaluation

Adjustment conditions for basic setting

1x111111 Page 01-170

Oxygen sensor regulator before catalyst

-10.0 to 10.0%

Page 01-198

Coolant temperature 80 to 110 C Page 01-177

Engine speed (idling speed):

Manual transmission

Automatic transmission

700 to 820 RPM

640 to 760 RPM

Page 01-171

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Significance of 8-digit number block for readiness code

Significance if display = 1

1 2 3 4 5 6 7 8 Significance

1 Coolant temperature above 80 C

1 Speed below 2000 RPM

1 Throttle valve closed

1 Oxygen sensor control OK.

1 Idling switch closed

1 Air conditioner compressor switched off

1 CAT-Temp. over 350 C

1 No DTCs recognized by On Board Diagnostic (OBD)

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Evaluating display group 1, display zone 1 - Engine speed (idling speed)

Appears on display

Possible cause Corrective action

Less than 640 RPM

or 700 RPM

Throttle valve control module sticking or faulty

- Check throttle valve control module Page 24-44

- Perform idling check Page 24-95

More than 760 RPM

or 820 RPM

Idling switch not closed/faulty - Check DTC Memory Page 01-21

Large amount of unmetered air (cannot be compensated for by the idling stabilization)

- Check intake air system for leaks Page 24-92

Throttle valve control module sticking/faulty

- Check throttle valve control module Page 24-44

- Perform idling check Page 24-95

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Display group 2 (Basic functions) Mass Air Flow (MAF) sensor

Engine running at idling speed

Read Measuring Value Block 2

Indicated on display

xxxx RPM

xxx% x.x ms

x.x g/s

1 2 3 4 Display zones Specification Evaluation

Air mass drawn in 2.0 to 4.5 g/s Page 01-173

Injection period

Engine code AWW

Engine code AWP

2.0 to 4.0 ms

1.5 to 4.0 ms

Page 01-173

Engine load 15 to 25% Page 01-183

Engine speed (idling speed):

Manual transmission

Automatic transmission

700 to 820 RPM

640 to 760 RPM

Page 01-171

Note:

For display zone 4:

The air mass measured by the Mass Air Flow (MAF) sensor is indicated.

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Evaluating display group 2, display zone 3 - Injection period

Appears on display

Possible cause Corrective action

Less than 2.0 ms Large amount of fuel from the

Evaporative Emission (EVAP) system

- Check EVAP canister purge regulator valve Page 01-94 , Output Diagnostic Test Mode

Incorrect injectors with greater throughput installed

- Check injection rate Page 24-75

More than 4.0 ms Increased engine load due to electric

consumers, air conditioner, gear selected or power steering on full lock

- Eliminate increased load (air conditioner, power steering etc.)

Evaluating display group 2, display zone 4 - Air mass drawn in

Appears on display

Possible cause Corrective action

Less than 2.0 g/s Large amount of unmetered air between

intake manifold and Mass Air Flow (MAF) sensor

- Repair unmetered air

Greater than 4.5 g/s Gear selected (automatic transmission) - Place selector lever in P

or N

Engine loaded due to ancillaries - Eliminate load (air conditioner, power steering etc.)

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Display group 3 (Basic functions) Mass Air Flow (MAF) sensor

Engine running at idling speed

Read Measuring Value Block 3

Indicated on display

xxxx RPM

x.xx ms

x.x% xx.x BTDC

1 2 3 4 Display zones

Specification Evaluation

Ignition angle

Engine code AWW

Engine code AWP

6 to 12 BTDC

5 to 12 BTDC

---

Throttle valve angle (potentiometer 1 -G187-)

0.2 to 4.0%

Page 01-183

Air mass drawn in 2.0 to 4.5 g/s Page 01-173

Engine speed (idling speed):

Manual transmission

Automatic transmission

700 to 820 RPM

640 to 760 RPM

Page 01-171

Note:

For display zone 3:

Display values must be approx. 100% when accelerator pedal is fully depressed.

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Display group 4 (Basic functions)

Engine running at idling speed

Read Measuring Value Block 4

Indicated on display

xxxx RPM

xx.xxx V

xxx.x C

xxx.x C

1 2 3 4 Display zones Specification Evaluation

Intake air temperature

-48 to 110 C Page 01-178

Coolant temperature 60 to 110 C Page 01-177

Voltage supply for engine control module

12.0 to 15.0 V Page 01-176

Engine speed (idling speed):

Manual transmission

Automatic transmission

700 to 820 RPM

640 to 760 RPM

Page 01-171

Note:

For display zone 3:

The engine control module will use the intake air temperature as a replacement value for an engine start (start temperature - replacement value) as soon as there is a malfunction stored in the DTC memory, which affects the Engine Coolant Temperature (ECT) Sensor -G62-. The temperature then rises according to a model stored in the control module. When the engine has reached normal working temperature a fixed replacement value will be displayed after a certain period. This fixed value is also dependent upon the intake air temperature.

Note:

For display zone 4:

The total temperature range is given as the specification. The displayed value must be above ambient temperature.

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Evaluating display group 4, display zone 2 - Control module voltage supply

Appears on display

Possible cause Corrective action

Less than 12.0 V Alternator faulty, battery charge state

low Repair Manual, Electrical

Equipment, Repair Group 27

- Check alternator and battery voltage, charge battery:

Battery heavily charged shortly after starting due to high charging current and current consumers

- Increase revs slightly for a few minutes and switch off current consumers

Transfer resistance in the current supply or the engine control module Ground (GND) connection

- Check engine control module voltage supply Page 24-139

Current draw when ignition is off - Eliminate current draw

More than 15.0 V Voltage regulator on alternator faulty

Repair Manual, Electrical Equipment, Repair Group 27

- Check voltage regulator, replace if necessary:

Excess voltage due to jump starting or quick charging unit

- Check DTC Memory Page 01-21

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Evaluating display group 4, display zone 3 - Coolant temperature

Appears on

display

Possible cause Corrective action

Less than 60 C Engine too cold - If necessary test drive vehicle

Coolant temperature sensor or wiring to engine control module

- Check coolant temperature sensor Page 24-52

Greater than 110

C

Radiator soiled - Clean radiator

Coolant fan not functioning Electrical Wiring Diagrams, Troubleshooting &

Component Locations

- Check function

Thermostat faulty Repair Manual, 1.8 Liter 4-Cyl. 5V Turbo

Engine Mechanical, Engine Code(s): AWD, AWW, AWP, Repair Group 19; Removing and installing parts of cooling system: Parts of cooling system - engine side

- Check thermostat

Coolant temperature sensor or wiring to engine control module

- Check coolant temperature sensor Page 24-52

Constant -48.0 C Wiring open circuit - Check coolant temperature sensor Page 24-

52

Constant 143 C Short between wires

3 and 4

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Evaluating display group 4, display zone 4 - Intake air temperature

Appears on display

Possible cause Corrective action

Constant -48.0C Wiring open circuit - Check intake air temperature sensor

Page 24-62

Constant 143 C Short between wires 1 and 2

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Display group 5 (Basic functions)

Engine running at idling speed

Read Measuring Value Block 5

Indicated on display

xxxx RPM

xxx% xxx km/h

Text

1 2 3 4 Display zones Specification Evaluation

Operating mode (idling, part throttle, enrichment, overrun)

Idling

---

Road speed 0 km/h ---

Engine load 15 to 25% Page 01-183

Engine speed (idling speed):

Manual transmission

Automatic transmission

700 to 820 RPM

640 to 760 RPM

Page 01-171

Note on display zone 2:

Engine load at idle is given as the specified value.

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Display group 6 (Basic functions)

Engine running at idling speed

Read Measuring Value Block 6

Indicated on display

xxxx RPM

xxx% xxx.x C

xx.x%

1 2 3 4 Display zones Specification Evaluation

Altitude correction factor

-50.0 to 20.0% ---

Intake air temperature -48 to 110 C Page 01-178

Engine load 15 to 25% Page 01-183

Engine speed (idling speed):

Manual transmission

Automatic transmission

700 to 820 RPM

640 to 760 RPM

Page 01-171

Note:

For display zone 2:

Engine load at idle is given as the specified value.

For display zone 3:

The total temperature range is given as the specification. The displayed value must be above ambient temperature.

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Only engine code AWP with automatic transmission:

Display group 8 -Basic function- Vacuum pump for brakes

Ignition on, engine not running

Read measured value block 8

Indicated on display

Text Text xxx mbar

1 2 3 4 Display zones Specification Evaluation

Absolute pressure / brake booster

--- ---

Electrical vacuum pump ON/OFF --- ---

Brake pedal

not depressed

depressed

---

---

---

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Measuring value blocks, evaluating display groups 10 to 29 (Ignition)

Display group 10 (Ignition)

Engine running at idling speed

Read Measuring Value Block 10

Indicated on display

xxxx RPM

xxx% x.x% xx.x BTDC

1 2 3 4 Display zones

Specification Evaluation

Ignition angle

Engine code AWW

Engine code AWP

5 to 15 BTDC

4 to 15 BTDC

---

Throttle valve angle (potentiometer 1 -G187-)

0.3 to 4.0%

Page 01-183

Engine load 10 to 25% Page 01-183

Engine speed (idling speed):

Manual transmission

Automatic transmission

700 to 820 RPM

640 to 760 RPM

Page 01-171

Note:

For display zone 2:

Engine load at idle is given as the specified value.

For display zone 3:

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Display values must be approx. 100% when accelerator pedal is fully depressed.

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Evaluating display group 10, display zone 2 - Engine load

Appears on display

Possible cause Corrective action

Less than 10% Lesser values can only occur when driving in overrun

More than 25% Rough idling (not running on all

cylinders) - Injectors or spark plugs faulty

Electric consumers switched on - Switch off electric consumers

Steering wheel at full lock - Set steering wheel to center position

Gear selected (automatic transmission)

- Place selector lever in P or N

Mass Air Flow (MAF) sensor faulty

- Check Mass Air Flow (MAF) sensor Page 24-38

Evaluating display group 10, display zone 3 - Throttle valve angle

Appears on display

Possible cause Corrective action

More than 4% Engine control module not

matched to throttle valve control module

- Match engine control module to throttle valve control module Page 24-152

Throttle positon sensor in throttle valve control module faulty

- Check throttle valve control module Page 24-44

Throttle valve sticking - Eliminate cause

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Display group 14 (Ignition) Misfire recognition

Engine running at idling speed

Read Measuring Value Block 14

Indicated on display

xxxx RPM

xxx% xxx Text

1 2 3 4 Display zones Specification Evaluation

Misfire recognition (active, blocked)

active Page 01-187

Misfire total 0 ---

Engine load 10 to 25% Page 01-183

Engine speed (idling speed):

Manual transmission

Automatic transmission

700 to 820 RPM

640 to 760 RPM

Page 01-171

Note:

For display zone 3:

The total of the detected misfires is displayed here. It provides no information about the time period in which the misfires have occurred. Therefore, check misfire recognition while driving Page 28-25 .

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Display group 15 -Ignition- Misfire recognition Cyl. 1 to Cyl. 3

While driving

Read measured value block 15

Indicated on display

xxx xxx xxx Text

1 2 3 4 Display zones Specification Evaluation

Misfire recognition

(activated, blocked)

activated ---

Misfire Cyl. 3 0 Page 01-187

Misfire Cyl. 2 0 Page 01-187

Misfire Cyl. 1 0 Page 01-187

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Display group 16 -Ignition- misfire recognition Cyl. 4

While driving

Read measured value block 16

Indicated on display

xxx --- --- Text

1 2 3 4 Display zones Specification Evaluation

Misfire recognition

(activated, blocked)

activated ---

Misfire Cyl. 4 0 Page 01-187

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Evaluating display group 14, display zone 3 - Total number of misfires

Appears on display Possible cause Corrective action

Greater than specification Spark plug faulty

Spark plug connector faulty

Ignition coil faulty

Ignition coil output stage faulty

- Check ignition coils with output stage Page 28-11

- Check spark plugs Page 28-7

Injector faulty - Check injectors Page 24-75

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Display group 22 (Ignition) Knock control

While driving

Read Measuring Value Block 22

Indicated on display

xxxx RPM

x.xx% xx.x CA

xx.x CA

1 2 3 4 Display zones Specification Evaluation

No. 2 Cyl. retardation of ignition timing by knock control

0 to 12.75CA

Page 01-190

No. 1 Cyl. retardation of ignition timing by knock control

0 to 12.75CA

Page 01-190

Engine load 10 to 150% ---

Engine speed (idling speed)

Manual transmission

Automatic transmission

700 to 6800 RPM

640 to 6800 RPM

Page 01-171

Note:

For display zones 3 and 4:

The displayed value should be 0.0 CA at idling.

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Display group 23 (Ignition) Knock control

While driving

Read Measuring Value Block 23

Indicated on display

xxxx RPM

x.xx% xx.x CA

xx.x CA

1 2 3 4 Display zones Specification Evaluation

No. 4 Cyl. retardation of ignition timing by knock control

0 to 12.75CA

Page 01-190

No. 3 Cyl. retardation of ignition timing by knock control

0 to 12.75CA

Page 01-190

Engine load 10 to 150% ---

Engine speed (idling speed)

Manual transmission

Automatic transmission

700 to 6800 RPM

640 to 6800 RPM

Page 01-171

Note:

For display zones 3 and 4:

The displayed value should be 0.0 Crankshaft Angle (CA) at idling.

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Evaluating display groups 22/23, display zones 3 and 4 - Retardation of ignition

Appears on display

Possible cause Corrective action

All cylinders 12.75 CA

Knock sensor faulty

- Check knock sensors Page 28-16

Connector corroded

Knock sensor incorrectly tightened

- Loosen knock sensor and tighten to 20 Nm

Ancillary components on engine loose

- Tighten ancillary components

Poor fuel quality - Change type of fuel

One cylinder deviates greatly from the others

Connector corroded

- Check knock sensors Page 28-16

Engine damaged Repair Manual, 1.8 Liter 4-Cyl. 5V Turbo

Engine Mechanical, Engine Code(s): AWD, AWW, AWP, Repair Group 15; Removing and installing cylinder head; Checking compression pressure

- Check compression pressures:

Ancillary components on engine loose

- Tighten ancillary components

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Display group 28 (Ignition) knock control

While driving

Read Measuring Value Block 28

Indicated on display

xxxx RPM

xx.x% xxx.x C

Text

1 2 3 4 Display zones Specification Evaluation

Result of knock sensor test (Test on / Test off / Sys. OK. / Sys. n.OK.

Sys. OK.

---

Coolant temperature 40 to 110 C Page 01-177

Engine load 15 to 175% ---

Engine speed 2200 to 6800 RPM

---

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Measuring value blocks, evaluating display groups 30 to 49, 99, 107 (oxygen sensor control)

Display group 30 (oxygen sensor control)

Engine running at idling speed

Read Measuring Value Block 30

Indicated on display

xxx xxx

1 2 3 4 Display zones Specification Evaluation

Oxygen sensor control status after catalyst

110 Page 01-193

Oxygen sensor control status before catalyst 111 Page 01-193

Note:

For display zones 2:

The 3rd display position is not set to 1 until in part throttle range.

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Significance of 3 digit number block in display zones 1 and 2

Significance if display = 1

1 2 3

1 Oxygen sensor control active

1 Oxygen sensor operationally ready

1 Oxygen sensor heating on

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Display group 32 (oxygen sensor control) Oxygen sensor learned values

Engine running at idling speed

Read Measuring Value Block 32

Indicated on display

xx.x% xx.x%

1 2 3 4 Display zones Specification Evaluation

Oxygen sensor learned value at part load (multiplicative)

-10 to 10% Page 01-195

Oxygen sensor learned value at idling speed (additive)

-10 to 10% Page 01-195

Note:

For display zones 1 and 2:

Low values indicate that the engine is running too rich and therefore the oxygen sensor control is leaning the mixture.

High values indicate that the engine is running too lean and therefore the oxygen sensor control enriches the mixture.

If there is no voltage supply to the control module all the values learned will be cancelled.

add = additive - The effects of the malfunction (e.g. unmetered air) will reduce as the engine speed increases. The injection period will be modified by a fixed amount for additive learned values. This amount is not dependent upon the basic injection period.

mul = multiplicative - The effects of the malfunction (e.g. malfunctioning injector) will increase as the engine speed increases. A multiplicative learned value is a proportional change to the injection period. This change is dependent on the basic injection period.

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Note:

Initiating learning process: Control module in mode 04, Basic settings

Learning conditions for idling: Idling, coolant temperature min. 75 C, intake air temperature max. 90 C

Learning conditions for part load: coolant temperature min. 75 C, intake air temperature max. 90 C

EVAP canister purge regulator valve must be closed and the A/C compressor must be off.

Evaluating display zone 32, display zones 1 and 2 - Oxygen sensor learned values

Appears on display

Possible cause Corrective action

Low oxygen sensor learned

values Low learned values at idling but with normal learned values at part throttle: possible oil dilution (high level of fuel in oil)

- Disappears after motorway drive or oil change

Injector leaking - Check injector Page 24-75

Fuel pressure too high - Check fuel pressure regulator and holding pressure Page 24-86

EVAP canister purge regulator valve permanently open

- Check EVAP canister purge regulator valve Page 01-94 , Output Diagnostic Test Mode

Mass Air Flow (MAF) sensor faulty - Check Mass Air Flow (MAF) sensor Page 24-38

Oxygen sensor heating faulty or oxygen sensor soiled

- Check oxygen sensor heating Page 24-26

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Appears on display

Possible cause Corrective action

High oxygen sensor learned

values

High learned values at idling speed, not so high learned values at part throttle: possible unmetered air in area of intake manifold

- Check intake air system for leaks Page 24-92

Unmetered air between Mass Air Flow (MAF) sensor and throttle valve

- Repair cause

Injector blocked - Check quantity injected rate Page 24-75

Display zones 1 and 2 high: Mass Air Flow (MAF) sensor faulty

- Check Mass Air Flow (MAF) sensor Page 24-38

Fuel pressure too low - Check fuel pressure regulator and holding pressure Page 24-86

Unmetered air at exhaust manifold gasket

Oxygen sensor heating faulty or oxygen sensor soiled

- Check oxygen sensor heating Page 24-26

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Display group 33 (oxygen sensor control) Oxygen sensor control values

Engine running at idling speed

Read Measuring Value Block 33

Indicated on display

xx.x% x.xxx V

1 2 3 4 Display zones Specification Evaluation

Oxygen sensor voltage, oxygen sensor before catalyst

0.000 to 5.000 V

Page 01-199

Oxygen sensor regulator before catalyst -10.0 to 10.0% Page 01-198

Note:

For display zone 1:

The display must fluctuate around 0. If constant 0 is displayed, the oxygen sensor control has switched from regulation to control, because there is a malfunction in the oxygen sensor control. Check DTC Memory Page 01-21 .

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Evaluating display group 33, display zone 1 - oxygen sensor regulator before catalyst

Appears on display

Possible cause Corrective action

Outside tolerance

range Minus range: Mixture too rich, oxygen sensor control weakens mixture

Positive range: Mixture too lean, oxygen sensor control enriches mixture

- Wait 30 seconds until display has stabilized

Unmetered air - Check intake system for leaks Page 24-92

Injector faulty - Check injection rate Page 24-75

Oxygen sensor learned value on limit

- Check oxygen sensor learned value in display group 32

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Readiness code

Display group 34 (oxygen sensor control) oxygen sensor diagnostic before catalyst (checking age via cycle duration monitoring)

Vehicle stationary, engine running at increased idling speed

Control module in mode 04-Basic settings

Read Measuring Value Block 34

Indicated on display

xxxx RPM

xxx.x C

xx.xx s

Text

1 2 3 4 Display zones Specification Evaluation

Result of oxygen sensor before catalyst age check (test OFF/test ON/B1-S1 OK / B1-S1 n.OK)

B1-S1 OK

---

Cycle duration oxygen sensor before catalyst

0.50 to 2.50

---

Catalyst temperature 350 to 500 C ---

Engine speed 1800 to 2200 rpm

---

Note:

For display zone 2:

Value calculated from engine speed and engine load.

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Readiness code

Display group 36 (oxygen sensor control) Operational readiness of oxygen sensor after catalyst

Engine running at idling speed

Control module in mode 04-Basic settings

Read Measuring Value Block 36

Indicated on display

x.xxx V Text

1 2 3 4 Display zones Specification Evaluation

Check oxygen sensor after catalyst (Test OFF/Test ON/B1-S2 OK / B1-S2 n.OK)

B1-S2 OK

---

Oxygen sensor voltage, oxygen sensor after catalyst

0.100 to 0.900 V

Page 01-201

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Evaluating display group 36, display zone 1 - Oxygen sensor voltage,oxygen sensor after catalyst

Appears on display

Possible cause Corrective action

Constant 1.100 V Short to positive via: oxygen sensor, sensor wiring, Ground (GND) wiring, engine control module

- Check oxygen sensor wiring Page 24-117

Constant between 0.400 to 0.500 V Open circuit via: oxygen sensor, sensor

wiring, Ground (GND) wiring, engine control module

Constant 0.000 V Short to Ground (GND) via: oxygen sensor, sensor wiring, Ground (GND) wiring, engine control module

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Readiness code

Display group 37 (oxygen sensor control) oxygen sensor - dwell period test

Engine running at idling speed

Control module in mode 04-Basic settings

Read Measuring Value Block 37

Indicated on display

xxx% x.xxx V

xxxx ms

Text

1 2 3 4 Display zones Specification Evaluation

Result (Test On / OFF /

Syst. OK / n.OK)

Syst. OK

Dwell period oxygen sensor control before catalyst

-0.02 to 0.02

Oxygen sensor voltage, oxygen sensor after catalyst

0.100 to 0.900 V

Page 01-201

Engine load 10 to 150% ---

Note:

For display zone 1:

The entire display range is given.

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Display group 41 (oxygen sensor control) oxygen sensor heating

Engine running at idling speed

Read Measuring Value Block 41

Indicated on display

x.x kOhm

Text x.x kOhm

Text

1 2 3 4 Display zones Specification Evaluation

Oxygen sensor heating after catalyst

Htg.aC.ON

Htg.aC.OFF

---

Oxygen sensor heating after catalyst, resistance

0.0 to 2.0 kOhm

---

Oxygen sensor heating before catalyst Htg.bC.ON

Htg.bC.OFF

---

Note:

For display zones 2 and 4:

The oxygen sensor heating may be switched ON or OFF depending on the operating conditions of the engine, therefore the display in display zone 2 or 4 may show "Htg.b(a)C.ON" or alternating from "Htg.b(a)C.ON" to Htg.b(a)C.OFF".

Note:

For display zone 3:

In the case of oxygen sensor heating open circuit, there will be no display in Display group 3.

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Readiness code

Display group 43 (oxygen sensor control) oxygen sensor diagnostic after catalyst (ageing check)

Vehicle stationary, engine running at increased idling speed

Control module in mode 04-Basic settings

Read Measuring Value Block 43

Indicated on display

xxxx RPM

xxx.x C

xx.xx s

Text

1 2 3 4 Display zones Specification Evaluation

Result of aging check of oxygen sensor after catalyst (test OFF/test ON/B1-S2 OK / B1-S2 n.OK)

B1-S1 OK

---

Oxygen sensor voltage, oxygen sensor after catalyst

0.100 to 0.900 V

---

Catalyst temperature min. 300 C ---

Engine speed 1800 to 2200 rpm

---

Note:

For display zone 2:

Value calculated from engine speed and engine load.

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Readiness code

Display group 46 (oxygen sensor control) Catalyst diagnostic (conversion test)

Vehicle stationary, engine running at increased idling speed

Control module in mode 04-Basic settings

Read Measuring Value Block 46

Indicated on display

xxxx RPM

xxxx C

x.xx Text

1 2 3 4 Display zones Specification Evaluation

Result of catalyst conversion test (Test OFF/test ON/Cat B1 OK/Cat B1 n.OK)

Cat B1 OK

---

Amplitude ratio 0.00 to 0.32 ---

Catalyst temperature min. 440 C ---

Engine speed 1800 to 2200 rpm

---

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Display group 99 -Oxygen sensor control - oxygen sensor operating condition

Engine running at idling speed

Control module in mode 04-Basic setting, oxygen sensor control off

Control module in mode 08-Read measured value block, oxygen sensor control on

Read measured value block 99

Indicated on display

xxxx rpm

xx.x C

x.x% Text

1 2 3 4 Display zones Specification Evaluation

Oxygen sensor control operating mode

-Cont. OFF or

-Cont. ON

---

Oxygen sensor control -10.0...10.0% Page 01-198

Coolant temperature 80...110 C Page 01-177

Engine speed

Manual transmission

Automatic transmission

700...6800 rpm

640...6800 rpm

Page 01-171

Notes on display zone 4:

For a defined fault finding the oxygen sensor control is switched off when selecting display group 99 under "Basic setting" or switched on under "Read measured value block". When the function 04 "Basic setting" is exited the oxygen sensor control is automatically active again.

It is possible to switch between the function 04 "Basic setting" and the function 08 "Read measured value block" by pressing the keys 4 and 8 on V.A.G 1551/1552.

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Readiness code

Display group 107 -Oxygen sensor control- Diagnostic of fuel system

Engine running at idling speed

Control module in mode 04-Basic settings

Read Measuring Value Block 107

Indicated on display

xxxx RPM

x.x% Text

1 2 3 4 Display zones Specification Evaluation

Result of diagnostic (Test OFF/Test ON / Syst. OK / Syst. n.OK)

Syst. OK

---

Oxygen sensor control (mean value) -23.0 to 23.0%

---

Engine speed (idling speed):

Manual transmission

Automatic transmission

700 to 820 RPM

640 to 760 RPM

Page 01-171

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Measuring value blocks, evaluating display groups 50 to 69 (Speed regulation)

Display group 50 (Speed regulation) Operating condition

Engine running at idling speed

Read Measuring Value Block 50

Indicated on display

xxxx RPM

xxxx RPM

Text Text

1 2 3 4 Display zones Specification Evaluation

Air conditioner compressor operating mode ON/OFF

Compr. ON or

Compr. OFF

---

Air conditioner operating mode A/C-High or

A/C-Low

---

Engine speed (idling speed specification):

Manual transmission

Automatic transmission

760 RPM

700 RPM

---

Engine speed (idling speed):

Manual transmission

Automatic transmission

700 to 820 RPM

640 to 760 RPM

Page 01-171

Note:

For display zone 2:

The specified engine speed from engine control module (calculated in control module) is displayed. In exceptional cases the idling speed can be adapted Page 24-100 . The idle speed figures with gear selected are then automatically modified.

Note:

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For display zone 3:

A/C-High = Air conditioner demands too high a heating or cooling output A/C-Low = Air conditioner not switched on.

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Note:

For display zone 4:

"Compr. OFF" is always displayed on vehicles without air conditioner.

Checking signal from and to air conditioner compressor Page 24-166

Display group 54 (Speed regulation)

While driving

Read Measuring Value Block 54

Indicated on display

xxxx RPM

Text xxx% xxx%

1 2 3 4 Display zones Specification Evaluation

Angle sensor -1- for throttle drive (power accelerator actuation) -G187-

0 to 100%

---

Throttle position (TP) sensor -G79-

0 to 100% ---

Operating mode (idling, part load, enrichment, overrun)

--- ---

Engine speed (idling speed)

Manual transmission

Automatic transmission

700 to 2520 RPM

640 to 2520 RPM

Page 01-171

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Display group 55 (Speed regulation) Idling stabilization

Engine running at idling speed

Read Measuring Value Block 55

Indicated on display

xxxx RPM

xx.xx% xx.xx% xxxxx

1 2 3 4 Display zones Specification Evaluation

Operating mode xxxxx Page 01-211

Idling regulator learning value

Air conditioner on (A/C High)

Air conditioner off (A/C Low)

-6.0 to 6.0%

-3.0 to 3.0%

---

Idling regulator -4.30 to 12.20%

---

Engine speed (idling speed):

Manual transmission

Automatic transmission

700 to 820 RPM

640 to 760 RPM

Page 01-171

Note:

For display zone 3:

Displayed is the amount that the idling speed stabilization has moved away from the prescribed average. For a new engine the values lie in the positive range, because of the higher friction and in the negative range with an engine that has run-in.

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01-211

Significance of 5 digit number block

Significance if display = 1

1 2 3 4 5 Significance

1 Air conditioner compressor switched on

1 Driving range (gear) selected

1 Air conditioning system switched on

1 Rear window defroster on

1 Power assisted steering pressure switch on

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Display group 56 (Speed regulation) Idling speed stabilization

Engine running at idling speed

Read Measuring Value Block 56

Indicated on display

xxxx RPM

xxxx RPM

xx.x% xxxxx

1 2 3 4 Display zones Specification Evaluation

Operating mode xxxxx Page 01-211

Idling regulator -4.30 to 12.20%

---

Engine speed (idling speed specification):

Manual transmission

Automatic transmission

760 RPM

700 RPM

---

Engine speed (idling speed):

Manual transmission

Automatic transmission

700 to 820 RPM

640 to 760 RPM

Page 01-171

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Readiness code

Display group 60 (Speed regulation) Adaptation EPC system 1)

Ignition on, engine not running

Control unit in mode 04 basic setting

Read Measuring Value Block 60

Indicated on display

xx% xx% x Text

1 2 3 4 Display zones Specification Evaluation

Adaptation condition (ADP runs, ADP OK or ADP ERROR)

ADP OK

---

Learning step counter 0 to 8 ---

Angle sensor -2- for throttle drive (power accelerator actuation) -G188-

97 to 3% ---

Angle sensor -1- for throttle drive (power accelerator actuation) -G187-

3 to 93% ---

1) Adapting engine control module to throttle valve control module Page 24-152 .

Note:

For display zone 60:

Matching the throttle valve control module is performed with ignition switched on.

Engine control module is adapted to throttle valve control module when selecting display group 60 under function 04 "Basic setting". This adaptation must always be carried out when another throttle valve control module (or another complete engine) or another engine control module is installed.

The counter counts up to 8 in display zone 3 during the adaptation.

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Display group 61 (Speed regulation) Electronic Power Control (EPC)

While driving

Read Measuring Value Block 61

Indicated on display

xxxx RPM

xx.xxx V

xxx% xxxxx

1 2 3 4 Display zones Specification Evaluation

Operating condition xxxx Page 01-211

Throttle drive (power accelerator actuation) -G186-

0 to 100% ---

Supply voltage for engine control module

12.0 to 15.0 V Page 01-176

Engine speed (idling speed)

Manual transmission

Automatic transmission

700 to 6800 RPM

640 to 6800 RPM

Page 01-171

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Display group 62 (Speed regulation) Electronic Power Control (EPC)

Ignition on, engine not running

Read Measuring Value Block 62

Indicated on display

xx% xx% xx% xx%

1 2 3 4 Display zones Specification Evaluation

Sender -2- for accelerator pedal position -G185-

0 to 100%

---

Throttle Position (TP) Sensor -G79-

12 to 97% ---

Angle sensor -2- for throttle drive (power accelerator actuation) -G188-

97 to 3% ---

Angle sensor -1- for throttle drive (power accelerator actuation) -G187-

3 to 93% ---

Note on display zone 4:

The entire display range is given.

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Vehicles with automatic transmissions

Display group 63 (Speed regulation) Kick down adaptation

Ignition on, engine not running

Control unit in mode 04 basic setting

Accelerator pedal fully depressed

Read Measuring Value Block 63

Indicated on display

xx% xx% Text Text

1 2 3 4 Display zones Specification Evaluation

Operating mode (ERROR, actuate, ADP. runs, ADP. OK

ADP. OK

Page 01-211

Kick-down switch Kick-down ---

Sender -2- for accelerator pedal position -G185-

0 to 100% ---

Throttle position (TP) sensor -G79- -25 to 25% ---

Note:

The entire display range is given.

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Vehicles with engine code AWP and cruise control system (CCS)

Display group 66 -Cruise control system

Engine running at idling speed

Read Measuring Value Block 66

Indicated on display

km/h xxxx km/h xxxx

1 2 3 4 Display zones Specification Evaluation

Switch position of CCS controls switch

00000011 Page 01-220

Specified road speed (last value stored by CCS)

--- ---

Brakes, clutch and CCS switches position

00001000 Page 01-220

Road speed (actual) 0 km/h ---

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Significance of the numbers in the 8-digit display, display field 2, brake and cruise control switch

Note:

Only the last four digits of the 8-digit display are described in the following table.

1 0 1 1 Significance

Brake depressed (brake light switch)

Brake depressed (brake pedal switch)

Constant 0 for vehicles with automatic transmission (clutch switch)

Cruise control system operational

Checking brake light and brake pedal switch Page 24-182 .

Set cruise control system to operational with log-in code 11463; deactivate with log-in code 16167.

Electrical system; Repair group 27

Significance of the numbers in the 8-digit display, display field 4, cruise control switch

Note:

Only the last four digits of the 8-digit display are described in the following table.

1 1 0 0 Significance

CCS sliding switch at off (locked only; not locked = 1)

CCS sliding switch at off (locked)

SET button depressed

CCS sliding switch at RES

Checking control switches for cruise control system:

Electrical system; Repair group 27

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Vehicles with engine code AWW and cruise control system (CCS)

Display group 66 -Cruise control system

Engine running at idling speed

Read measured value block 66

Indicated on display

km/h xxxx km/h xxxx

1 2 3 4 Display zones Specification Evaluation

Switch position of CCS controls switch

0000 Page 01-220

Specified road speed (last value stored by CCS)

--- ---

Brakes, clutch and CCS switches position

1000 Page 01-220

Road speed (actual) 0 km/h ---

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Significance of the figures in the 4 digit display, display zone 2, brakes, clutch and CCS switches position

1 1 1 1 Significance

Brake depressed (brake light switch)

Brake depressed (brake pedal switch)

Clutch depressed or on automatic transmission brake depressed

Cruise control system operational

Note:

For 4 digit display:

Checking clutch pedal switch -Engine code AWW: Page 24-176 ; Engine code AWP: Page 24-170 .

Checking brake light and brake pedal switch Page 24-182

Set cruise control system to operational with log-in code 11463; deactivate with log-in code 16167.

Significance of the figures in the 4 digit display, display zone 4, CCS control switches

1 1 0 0 Significance

CCS sliding switch at off (switch locked only)

CCS sliding switch at off (switch not locked or locked)

SET button depressed

CCS sliding switch at RES

Note:

Checking control switches for cruise control system:

Repair Manual, Electrical Equipment, Repair Group 27

Function of cruise control system:

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Vehicle Owner's Manual

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Measuring value blocks, evaluating display groups 70 to 79 (emission reduction)

Readiness code

Display group 70 (emission reduction) Evaporative Emission (EVAP) system diagnostic (fuel tank venting system)

Engine running at idling speed

Coolant temperature at least 60 C

Control module in mode 04-Basic settings

Read Measuring Value Block 70

Indicated on display

xxx% xx.x% Text

1 2 3 4 Display zones Specification Evaluation

Result of diagnostic (Test ON / OFF or TBV OK / n.OK)

TBV OK

---

EVAP purge flow rate 0 to 100% ---

Oxygen sensor control deviation in TBV diagnostic

-7.0 to 7.0% ---

EVAP canister purge regulator valve duty cycle 0 to 100% ---

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Note:

TBV means fuel tank venting valve (EVAP canister purge regulator valve). The diagnostic can only be initiated once per engine start.

For display zone 1:

The entire display range is given.

For display zone 3:

The value is only indicated for diagnostic via air path.

The entire display range is indicated.

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Readiness code

Display group 71 -Exhaust reduction- Leak diagnostic system

Engine running at idling speed

Coolant temperature at least 80 C

Control module in mode 04-Basic settings

Read Measuring Value Block 71

Indicated on display

Text Text Text Text

1 2 3 4 Display zones Specification Evaluation

Result of diagnostic (Test ON/ OFF, Syst. OK / n.OK)

Syst. OK

---

Diagnostic status (Syst.Test/End.Test)

End of Test ---

DTC message (small leak/large leak) --- ---

Reed-contact condition (Reed closed/Reed open) Reed open ---

Note:

Coolant temperature should be below 80 C during the test, check Page 01-169 .

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Readiness code

Display group 77 (emission reduction) Secondary air system diagnostic

Vehicle stationary, engine running at increased idling speed

Coolant temperature at least 75 C

Control module in mode 04-Basic settings

Read Measuring Value Block 77

Indicated on display

xxxx RPM

xx.x g/s

x.x g/s

Text

1 2 3 4 Display zones Specification Evaluation

Result of diagnostic (Test ON/ OFF, Syst. OK / n.OK)

Syst. OK

---

Secondary air system air mass -100 to 100% ---

Air mass drawn in 5.0 to 12.0 g/s

Page 01-173

Engine speed (idling speed)

Manual transmission

Automatic transmission

700 to 820 rpm

640 to 760 rpm

Page 01-171

Note:

For display zone 3:

The entire display range is given.

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Measured value blocks, evaluating display groups 86 to 89, 100 (Readiness code)

Display group 89 -Trip odometer- Exhaust Malfunction Indicator Lamp (MIL) on

Engine running at idling speed

Read Measuring Value Block 100

Indicated on display

xxxx km Text

1 2 3 4 Display zones Specification Evaluation

Requirement "Tank empty" (OK / too small)

--- ---

Engine code AWW:

Distance traveled with exhaust Malfunction Indicator Lamp (MIL) on

Engine code AWP:

No display

--- ---

Note:

Significance of exhaust Malfunction Indicator Lamp (MIL) Page 01-8

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Display group 100 (Readiness code)

Engine running at idling speed

Read Measuring Value Block 100

Indicated on display

xxxxxxxx xxx.x C

xxxx s

xxxxxxxx

1 2 3 4 Display zones

Specification Evaluation

Diagnostic status

--- ---

Period since last engine start

--- ---

Coolant temperature 80 to 110 C Page 01-177

Readiness code 00000000 Page 01-227

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Significance of 8 digit number block for readiness code

The readiness code is generated only when all display zones show 0

1 2 3 4 5 6 7 8 Diagnostic function

0 Catalyst

0 Catalyst heating (currently no diagnostic/always "0")

0 Evaporative Emission (EVAP) system (tank venting system)

0 Secondary air system

0 Air conditioner (currently no diagnostic/always "0")

0 Oxygen sensors

0 Oxygen sensor heating

0 Exhaust gas recirculation system (not fitted/always "0")

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Measuring value blocks, evaluating display groups 90 to 97 (Performance increase)

Display group 91 (Performance increase) Camshaft adjustment

While driving

Read Measuring Value Block 91

Indicated on display

xxxx/min xxx% Text x.x KW

1 2 3 4 Display zones Specification Evaluation

Active camshaft adjustment angle

-3 to 25 CA ---

Camshaft adjustment On / Off

--- ---

Engine load 10 to 150% ---

Engine speed (idling speed)

Manual transmission

Automatic transmission

700 to 6800 RPM

640 to 6800 RPM

Page 01-171

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Note:

For display zones 3 and 4:

There are only two positions for the adjustable camshaft, the normal position and the switched position. To bring the camshaft into the switched position, accelerate the vehicle in 1st gear from rest. Display zone 4 shows the actual position of the adjustable camshaft. If the activation of the adjustable camshaft is active - see display zone 3- it can be seen in display zone 4 whether in fact an adjustment of the camshaft has occurred (feed-back information). Camshaft in normal position = -3.0 to +6.0 CA. Camshaft in switched position = 16.0 to 25.0 CA

If during test drive display zone 4 displays a value between 6.0 CA and16.0 CA , the electric camshaft adjustment valve is correctly directing oil pressure to the mechanical camshaft adjuster, but it cannot attain its end position (e.g. for reasons of stiffness/tightness).

Checking camshaft adjustment:

Repair Manual, 1.8 Liter 4-Cyl. 5V Turbo Engine Mechanical, Engine Code(s): AWD, AWW, AWP, Repair Group 15; Servicing valve gear, checking camshaft adjustment

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Display group 94 (Performance increase) Camshaft adjustment

Vehicle stationary, engine running at increased idling speed

Control module in mode 04-Basic settings

Read Measuring Value Block 94

Indicated on display

xxxx/min Text Text

1 2 3 4 Display zones Specification Evaluation

Result of diagnostic

(Test OFF/Test ON/Syst.OK/Syst. nOK)

Syst. OK ---

Camshaft adjustment

CAM-ADJ.ON

CAM-ADJ.OFF

CAM-ADJ.ON ---

Engine speed 1080 to 2600 rpm

---

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Measuring value blocks, evaluating display groups 110 to 119 (Charge pressure control)

Display group 111 - Charge pressure control - adaptation valves for boost pressure limitation

Engine running at idling speed

Read Measuring Value Block 111

Indicated on display

x.x% x.x% x.x% x.x%

1 2 3 4 Display zones Specification Evaluation

RPM range 4 -15 to 160% ---

RPM range 3 -15 to 160% ---

RPM range 2 -15 to 160% ---

RPM range 1 -15 to 160% ---

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Display group 113 - Charge pressure control

Engine running at idling speed

Read Measuring Value Block 113

Indicated on display

xxxx RPM

xxx.x% xxx.x% xxx mbar

1 2 3 4 Display zones Specification Evaluation

atmospheric pressure (air pressure)

500 to 1200 mbar

Page 01-233

Angle sensor -1- for throttle drive (power accelerator actuation) -G187-

0 to 100%

---

Engine load 10 to 150% ---

Engine speed (idling speed)

Manual transmission

Automatic transmission

700 to 6800 RPM

640 to 6800 RPM

Page 01-171

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Evaluating display group 113, display zone 4 - atmospheric pressure

Elevation Air pressure

0 m 998 mbar

500 m 954 mbar

1000 m 902 mbar

1500 m 853 mbar

2000 m 805 mbar

2500 m 756 mbar

3000 m 704 mbar

3500 m 655 mbar

4000 m 607 mbar

Note:

The air pressure can fluctuate depending upon the atmospheric conditions.

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Display group 114 (Charge pressure control)

While driving

Read Measuring Value Block 114

Indicated on display

xxx.x% xxx.x% xxx.x% xxx.x%

1 2 3 4 Display zones Specification Evaluation

Wastegate bypass regulator valve duty cycle

0 to 100% ---

Engine load 10 to 150% ---

Specified engine load after correction (reduced via knock control, altitude adaptation and coolant temperature)

max. 150% ---

Specified engine load (mapped value via accelerator pedal position)

max. 150% ---

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Display group 115 (Charge pressure control)

While driving

Read Measuring Value Block 115

Indicated on display

xxxx RPM

xxx.x% xxx mbar

xxx mbar

1 2 3 4 Display zones Specification Evaluation

Actual charge value

Engine code AWW

Engine code AWP

max. 1800 mbar

max. 2200 mbar

---

Specified charge pressure

Engine code AWW

Engine code AWP

max. 1800 mbar

max. 2200 mbar

---

Engine load 10 to 150% ---

Engine speed (idling speed)

Manual transmission

Automatic transmission

700 to 6800 RPM

640 to 6800 RPM

---

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Display group 116 - Charge pressure control

While driving

Read Measuring Value Block 116

Indicated on display

xxxx RPM

x.x% x.x% x.x%

1 2 3 4 Display zones Specification Evaluation

Intake air temperature correction factor

7 to -15% ---

---

Fuel correction factor 0 to -27% ---

Engine speed (idling speed)

Manual transmission

Automatic transmission

700 to 6800 RPM

640 to 6800 RPM

---

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Display group 117 - Charge pressure control

While driving

Read Measuring Value Block 117

Indicated on display

xxxx RPM

xxx.x% xxx.x% xxx mbar

1 2 3 4 Display zones Specification Evaluation

Specified charge pressure

Engine code AWW

Engine code AWP

1800 mbar

2200 mbar

---

Angle sensor -1- for throttle drive (power accelerator actuation) -G187-

0 to 100% ---

Throttle position (TP) sensor -G79- 0 to 100% ---

Engine speed (idling speed)

Manual transmission

Automatic transmission

700 to 6800 RPM

640 to 6800 RPM

---

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Display group 118 - Charge pressure control

While driving

Read Measuring Value Block 118

Indicated on display

xxxx RPM

xxx.x C

xxx.x% xxx mbar

1 2 3 4 Display zones Specification Evaluation

Actual charge value

Engine code AWW

Engine code AWP

max. 1800 mbar

max. 2200 mbar

---

Wastegate bypass regulator valve duty cycle

0 to 95%

---

Intake air temperature max. 110 C ---

Engine speed (idling speed)

Manual transmission

Automatic transmission

700 to 6800 RPM

640 to 6800 RPM

---

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Display group 119 (Charge pressure control)

While driving

Read Measuring Value Block 119

Indicated on display

xxxx RPM

x.x% x.x% xxx mbar

1 2 3 4 Display zones Specification Evaluation

Actual charge value

Engine code AWW

Engine code AWP

max. 1800 mbar

max. 2200 mbar

---

Wastegate bypass regulator valve duty cycle

0 to 100%

---

Boost pressure limitation -15 to 160% ---

Engine speed (idling speed)

Manual transmission

Automatic transmission

700 to 6800 RPM

640 to 6800 RPM

---

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Measuring value blocks, evaluating display groups 120 to 129 (Communication)

Display group 120 -Traction control -ASR-

While driving

Read Measuring Value Block 120

Indicated on display

xxxx RPM

xxx Nm

xxx Nm

Text

1 2 3 4 Display zones Specification Evaluation

Status TC active / TC n.active

---

Actual engine load 0 to 260 Nm ---

Specified engine load 0 to 440 Nm ---

Engine speed (idling speed)

Manual transmission

Automatic transmission

700 to 6800 RPM

640 to 6800 RPM

---

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Display group 122 -Transmission (automatic only)

While driving

Read Measuring Value Block 122

Indicated on display

xxxx RPM

xxx Nm

xxx Nm

Text

1 2 3 4 Display zones Specification Evaluation

Status Engine interv./no

engine interv.

---

Actual engine load 0 to 260 Nm ---

Specified engine load 0 to 440 Nm ---

Engine speed (idling speed)

Manual transmission

Automatic transmission

700 to 6800 RPM

640 to 6800 RPM

Page 01-171

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Display group 125 -Communication -data bus messages-

Engine running at idling speed

Read Measuring Value Block 125

Indicated on display

Text Text Text Text

1 2 3 4 Display zones Specification Evaluation

Air conditioning A/C 1

Combi-instrument Combi 1 ---

ABS status ABS 1 ---

Transmission status Transmission 1

---

Note:

For display zone 125:

Specification = 1; Control modules with active data bus are displayed.

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Display group 126 -Communication -data bus messages-

Engine running at idling speed

Read measured value block 126

Indicated on display

Text

1 2 3 4 Display zones Specification Evaluation

Airbag status Airbag 1 ---

Note on display group 126:

Specification = 1; Control modules with active data bus are displayed.

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