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Home >> Mercedes Benz >> 2008 >> ML 63 AMG (164.177) V8-6.3L (156.980) >> Repair and Diagnosis >> A L L Diagnostic Trouble Codes ( DTC ) >> Testing and Inspection >> Manufacturer Code Charts >> 2226 >> Part 2

Part 2


The left fuel level sensor has a short circuit to ground.














1.1.3.10. N82/1 (Vehicle power supply control module)
Test prerequisites

- There must not be any external power source, e.g. charger, connected.
- The voltage of battery G1 (Vehicle electrical system battery) is o.k.
- The voltage of battery G1/4 (Starter battery) is o.k.
- Fuse F52f1 (Fuse 1) is OK.
Test sequence

- Disconnect the socket 1 at control module N82/1 (Vehicle power supply control module).
- Measure direct voltage with multimeter between socket (N82/1)1.1 and Screw connection (N82/1) 2
- Measure direct voltage with multimeter between socket (N82/1)1.2 and Screw connection (N82/1) 3
Specified value:Voltage [11.0...14.5]VQuestion:Are the measurement values OK?

YES
The measurement values are OK.Possible cause and remedy

- If fault code B1011 occurs without complaints or function faults, erase fault memory and perform a function check.
End of test

NO
The measurement values are not OK.Possible cause and remedy

- Test cable(s), for which the set value is not met, for Short circuit or open circuit and repair if necessary.
End of test

1.1.3.11. N52 (RVC control module)
Test prerequisites

- Battery voltage is OK.
- Fuse f74 in component K40/5 (Rear fuse and relay module) is o.k.
Test sequence

- Disconnect connector 1 at component N52 (RVC control module).
- Disconnect connector 2 at component N52 (RVC control module).
- Measure direct voltage with multimeter between sockets 2.13 and 1.14
- Measure direct voltage with multimeter between sockets 2.9 and 1.14
- Measure direct voltage with multimeter between sockets 2.3 and 1.14
Specified value:Voltage = [11.0...14.5] VQuestion:Are the measurement values OK?







YES
The measurement values are OK.Possible cause and remedy

- Inspect plug connection(s) at control module for correct connection, damage, open circuit, loose contact and corrosion, and repair if necessary.
End of test

NO
The measurement values are not OK.Possible cause and remedy

- Test cable and plug connections between K40/5 f74 and (N52) 1.14 for Open circuit, repair if necessary.
- Test cable and plug connections between (N52) 2.13, 2.9, 2.3 and W15 (Ground, power ground, electronics (right footwell)) for Open circuit, repair if necessary.
End of test

1.1.3.12. A35/8 (TELE AID control unit)

Test 1.1.3.12.1: Which control module is fitted?

Test 1.1.3.12.2: ECE :

Test 1.1.3.12.3: TELE AID + Tele diagnosis (Nokia) 'MINNA' Modification year 2000/1

Test 1.1.3.12.4: TELE AID + Tele diagnosis (Nokia) 'HANNA' Modification year 2000/1

Test 1.1.3.12.5: USA :

Test 1.1.3.12.6: TELE AID (Motorola) Modification year 2000/1

Test 1.1.3.12.7: Japan :

Test 1.1.3.12.8: TELE AID (Panasonic) Modification year 2000/1

1.1.3.12.1. Which control module is fitted?

1.1.3.12.1. No further information available.

1.1.3.12.2. ECE :

1.1.3.12.2. No further information available.

1.1.3.12.3. TELE AID + Tele diagnosis (Nokia) 'MINNA' Modification year 2000/1
Test voltage supply.
Test prerequisite

- Fuse F4f63 (fuse 63) is OK.
Test sequence

- Switch off ignition.
- Disconnect coupling 1 at component A35/17 (CTEL and TELE AID transmitter/receiver unit, D2B).
- Measurement at connector 1 of control module A35/17 (CTEL and TELE AID transmitter/receiver unit, D2B)
- Measure direct voltage with multimeter between sockets (A35/17) 1.4 and (A35/17) 1.1
- Measure direct voltage with multimeter between sockets (A35/17) 1.5 and (A35/17) 1.6
- Measure direct voltage with multimeter between sockets (A35/17) 1.10 and (A35/17) 1.7
Specified value

- Voltage[11,0...14,5 ] V
Question

- Are the measurement values OK?







YES
The measurement values are OK.Restore original status.

- Switch off ignition.
- Insert coupling 1 at component A35/17 (CTEL and TELE AID transmitter/receiver unit, D2B).
- Switch on ignition.
End of test

NO
The measurement values are not OK.Restore original status.

- Switch off ignition.
- Insert coupling 1 at component A35/17 (CTEL and TELE AID transmitter/receiver unit, D2B).
- Switch on ignition.
Possible cause and remedy

- Lines between K40/5 (Rear fuse and relay module) and Z4/3 (Circuit 30 connector sleeve)
- Lines between Z4/3 (Circuit 30 connector sleeve) and A35/17 (CTEL and TELE AID transmitter/receiver unit, D2B)
- Lines between W30 (Ground, frame) and A35/17 (CTEL and TELE AID transmitter/receiver unit, D2B)
End of test

1.1.3.12.4. TELE AID + Tele diagnosis (Nokia) 'HANNA' Modification year 2000/1
Test voltage supply.
Test prerequisite

- Fuse F4f63 (fuse 63) is OK.
Test sequence

- Switch off ignition.
- Disconnect coupling 1 at component A35/17 (CTEL and TELE AID transmitter/receiver unit, D2B).
- Measurement at connector 1 of control module A35/17 (CTEL and TELE AID transmitter/receiver unit, D2B)
- Measure direct voltage with multimeter between sockets (A35/17) 1.4 and (A35/17) 1.1
- Measure direct voltage with multimeter between sockets (A35/17) 1.5 and (A35/17) 1.6
- Measure direct voltage with multimeter between sockets (A35/17) 1.10 and (A35/17) 1.7
Specified value

- Voltage[11,0...14,5 ] V
Question

- Are the measurement values OK?







YES
The measurement values are OK.Restore original status.

- Switch off ignition.
- Insert coupling 1 at component A35/17 (CTEL and TELE AID transmitter/receiver unit, D2B).
- Switch on ignition.
End of test

NO
The measurement values are not OK.Restore original status.

- Switch off ignition.
- Insert coupling 1 at component A35/17 (CTEL and TELE AID transmitter/receiver unit, D2B).
- Switch on ignition.
Possible cause and remedy

- Lines between K40/5 (Rear fuse and relay module) and Z4/3 (Circuit 30 connector sleeve)
- Lines between Z4/3 (Circuit 30 connector sleeve) and A35/17 (CTEL and TELE AID transmitter/receiver unit, D2B)
- Lines between W30 (Ground, frame) and A35/17 (CTEL and TELE AID transmitter/receiver unit, D2B)
End of test

1.1.3.12.5. USA :

1.1.3.12.5. No further information available.

1.1.3.12.6. TELE AID (Motorola) Modification year 2000/1
Test voltage supply.
Test prerequisite

- Fuse K40/5f76 (Fuse 76) is OK.
Test sequence

- Switch off ignition.
- Disconnect coupling 1 at component TELE AID [USA].
- Measure direct voltage with multimeter between sockets (A35/8) 1.13 and (A35/8) 1.25
- Measure direct voltage with multimeter between sockets (A35/8) 1.14 and (A35/8) 1.26
Specified value

- Voltage[11.0...14.5] V
Question

- Are the measurement values OK?







YES
The measurement value is OK.Restore original status.

- Switch off ignition.
- Insert coupling 1 at component TELE AID [USA].
- Switch on ignition.
End of test

NO
The measurement value is not OK.Restore original status.

- Switch off ignition.
- Insert coupling 1 at component TELE AID [USA].
- Switch on ignition.
Possible cause and remedy

- Lines between K40/5 (Rear fuse and relay module) and Z4/3 (Circuit 30 connector sleeve)
- Lines between Z4/3 (Circuit 30 connector sleeve) and TELE AID [USA]
- Lines between W30 (Ground, frame) and TELE AID [USA]
End of test

1.1.3.12.7. Japan :

1.1.3.12.7. No further information available.

1.1.3.12.8. TELE AID (Panasonic) Modification year 2000/1
Test voltage supply.
IMPORTANT NOTE

- Switch off ignition in order to remove the assembly plate.
- Detach control module TELE AID [Japan] from its mounting and hold horizontal.
- An emergency call may be activated during tipping and if ignition is switched on.
Test prerequisite

- Fuse K40/5f76 (Fuse 76) is OK.
Test sequence

- Switch off ignition.
- Disconnect coupling J8 at component TELE AID [Japan].
- Measure direct voltage with multimeter between sockets (A35/8) J8.12 and (A35/8) J8.25
- Measure direct voltage with multimeter between sockets (A35/8) J8.13 and (A35/8) J8.26
Specified value

- Voltage[11.0...14.5] V
Question

- Is the measurement value OK?


YES
The measurement value is OK.Restore original status.

- Switch off ignition.
- Insert coupling J8 at component TELE AID [Japan].
- Switch on ignition.
End of test

NO
The measurement value is not OK.Restore original status.

- Switch off ignition.
- Insert coupling J8 at component TELE AID [Japan].
- Switch on ignition.
Possible cause and remedy

- Lines between TELE AID [Japan] and Z4/3 (Circuit 30 connector sleeve)
- Lines between Z4/3 (Circuit 30 connector sleeve) and K40/5 (Rear fuse and relay module)
- Cables to ground point W30 (Ground, frame)
End of test

1.1.3.13. N88 (TPM [RDK] control unit)

Test 1.1.3.13.1: Up to 05/2005 ( Supplier Beru)

1.1.3.13.1. Up to 05/2005 ( Supplier Beru)

Test 1.1.3.13.1.1: Test voltage of terminal 30 at control unit N88 (TPM [RDK] control unit).

Test 1.1.3.13.1.2: Test voltage of terminal 15 at control unit N88 (TPM [RDK] control unit).

1.1.3.13.1.1. Test voltage of terminal 30 at control unit N88 (TPM [RDK] control unit).
Operation number of operation texts and work units or standard texts and flat rates:40-0641Test prerequisite

- Battery voltage is OK.
Test sequence

- Switch off ignition.
- Disconnect connector at component N88 (TPM [RDK] control unit).
- [A.16] Measure direct voltage with multimeter between 16 and 15 [A.15]
Specified value

- Voltage[11.0...14.5] V
Question

- Is the measurement value OK?


YES
The measurement value is OK.Possible cause and remedy

- Inspect cables, electrical connections and plug connections for damage, correct connection, loose contact and corrosion, and repair or replace if necessary.
- Replace component N88 (TPM [RDK] control unit).
End of test







NO
The measurement value is not OK.Possible cause and remedy

- Check fuse F4/f15.
- Cable to component N88 (TPM [RDK] control unit)
End of test

1.1.3.13.1.2. Test voltage of terminal 15 at control unit N88 (TPM [RDK] control unit).
Operation number of operation texts and work units or standard texts and flat rates:40-0641Test prerequisite

- Battery voltage is OK.
Test sequence

- Switch off ignition.
- Disconnect connector at component N88 (TPM [RDK] control unit).
- Switch on ignition.
- [A.16] Measure direct voltage with multimeter between 16 and 31 [A.31]
Specified value

- Voltage[11.0...14.5] V
Question

- Is the measurement value OK?


YES
The measurement value is OK.Possible cause and remedy

- Inspect cables, electrical connections and plug connections for damage, correct connection, loose contact and corrosion, and repair or replace if necessary.
- Replace component N88 (TPM [RDK] control unit).
End of test

NO
The measurement value is not OK.Possible cause and remedy

- Check fuse F1/f14.
- Cable to component N88 (TPM [RDK] control unit)
End of test

1.1.3.14. N93/1 (Audio gateway control unit) - Not valid for (J)
Test prerequisite

- Fuse K40/5f54 (Fuse 54) is OK.
Test sequence

- Switch off ignition.
- Measurement at component K40/5f54 (Fuse 54)
- Measure direct voltage with multimeter between ground socket and socket K40/5f54 (Fuse 54)
Specified value

- Voltage[11.0...14.5] V
Continue to next test step with button F2







1.1.3.14. No further information available.

Test prerequisites

- Fuse is OK.
Test sequence

- Measurement is performed with connector plugged in.
- Measure direct voltage with multimeter between sockets (N93/1) and (N93/1)
Specified value

- Voltage[11.0...14.5] V
Question

- Is the measurement value OK?







YES
The measurement value is OK.End of test

NO
The measurement value is not OK.Possible cause and remedy

- Test battery voltage.
- Check lines from component to component N93/1 (Audio gateway control unit).
- Check lines from component N93/1 (Audio gateway control unit) to component .
End of test

1.1.3.15. A2 (Radio)
Test prerequisite

- The fuse in component A2 (Radio) is OK.
- Fuse K40/5f77 (Fuse 77) is OK.
- Relevant fault codes exist or a complaint has been received.
Test sequence

- Switch off ignition.
- Disconnect coupling A at component A2 (Radio).
- Switch on ignition.
- Measure direct voltage with multimeter between sockets (A2) A.8 and (A2) A.4
Specified value

- Voltage[11.0...14.5] V
Question

- Is the measurement value OK?


YES
The measurement value is OK.Possible cause and remedy

- A2 (Radio)
End of test

NO
The measurement value is not OK.Possible cause and remedy

- Line from component K40/5 (Rear fuse and relay module) to component A2 (Radio)
- Line from component A2 (Radio) to component W30 (Ground, frame)
End of test

1.1.3.16. A40/3 (COMAND operating, display and controller unit)
Test prerequisite

- The fuse in component A40/3 (COMAND operating, display and controller unit) is OK.
- Fuse K40/5f77 (Fuse 77) is OK.
- Relevant fault codes exist or a complaint has been received.
Test sequence

- Switch off ignition.
- Measurement is performed with connector plugged in.
- Measure direct voltage with multimeter between sockets (A40/3) A.8 and (A40/3) A.4
Specified value

- Voltage[11.0...14.5] V
Question

- Is the measurement value OK?


YES
The measurement value is OK.End of test

NO
The measurement value is not OK.Possible cause and remedy

- Check lines from component A40/3 (COMAND operating, display and controller unit) to component K40/5 (Rear fuse and relay module).
- Check lines from component A40/3 (COMAND operating, display and controller unit) to component W30 (Ground, left front longitudinal frame rail).
End of test

1.1.3.17. N69/5 (Keyless Go control unit)
Manual check of supply voltage
Test sequence

- Disconnect coupling 4 at component N69/5 (Keyless Go control unit).
- Measure direct voltage with multimeter between sockets (N69/5) 4.10 and (N69/5) 4.1
Specified value

- [11.0...14.5] V
Question

- Is the measurement value OK?













YES
The measurement value is OK.Possible cause and remedy

- Inspect connector 4 at control unit N69/5 (Keyless Go control unit) for damage, correct connection, loose contact and corrosion and repair, if necessary.
End of test

NO
The measurement value is not OK.Possible cause and remedy

- Line between component N69/5 (Keyless Go control unit) and component F4 (Rear fuse box)
- Line between component N69/5 (Keyless Go control unit) and component W15/2 (Ground, left footwell)
End of test

1.1.3.18. A6 (STH heater unit)
Test prerequisites

- Battery voltage is OK.
- Fuse K40/5f56 (Fuse 56) is OK.
Test sequence

- Disconnect connector 1 at component A6 (STH or HB heater unit).
- Measure direct voltage with multimeter between sockets 1.2 and 1.1
Figure legend

- 1:ClutchPower supply
Specified value

- Voltage [11.0...14.5] V
Question:Is the measurement value OK?







YES
The measurement value is OK.Possible cause and remedy

- Check plug connection 1 at control module A6 (STH or HB heater unit) for correct connection, damage, open circuit, loose contact and corrosion, and repair if necessary.
End of test

NO
The measurement value is not OK.Possible cause and remedy

- Test cable and plug connections between K40/5f56 (Fuse 56) and (A6) 1.1 for Open circuit, repair if necessary.
- Test cable and plug connections between W3/1 (Ground, right front wheelhousing) and (A6) 1.2 for Open circuit, repair if necessary.
End of test

1.1.3.19. A37 (PSE control module (combined))
Test prerequisites

- Battery voltage is OK.
Test sequence

- Switch off ignition.
- Separate connector 1 from control unit A37 (PSE control module (combined)).
- Measure direct voltage with multimeter between sockets 1.6 and 1.2
Specified value

- Voltage[11.0...14.5]V
Question

- Is the measurement value OK?


YES
The measurement value is OK.Note

- In the event of stored faults with a high fault frequency count or in the event of customer complaints, check lines and connectors for loose contact and corrosion..
End of test

NO
The measurement value is not OK.Possible cause and remedy

- K40/5f71 (Fuse 71)
- Lines to component
- K40/5 (Rear fuse and relay module)
End of test

1.1.3.20. N25/7 (AIRSCARF control unit)
Figure legend

- Picture 1:Installation point of component K40/5 (Rear fuse and relay module)
- Picture 2:Installation point of component N25/7 (AIRSCARF control unit)
- Picture 3:Connector assignment N25/7 (AIRSCARF control unit)
Test prerequisite

- Battery voltage[11.0 ... 14.5] V
- Fuse K40/5f55 (Fuse 55) is OK.
- Fuse K40/5f56 (Fuse 56) is OK.
Test sequence

- Terminal 30A
- Separate plug connection 1 at control unit N25/7 (AIRSCARF control unit).
- Measure direct voltage with multimeter between sockets (N25/7) 1.1 and (N25/7) 1.2
Test sequence

- Terminal 30B
- Separate plug connection 2 at control unit N25/7 (AIRSCARF control unit).
- Measure direct voltage with multimeter between sockets (N25/7) 1.1 and (N25/7) 2.2
Specified value

- Voltage[11...14.5] V
Question:Are the measurement values OK?

















YES
The measurement values are OK.Possible cause

- N25/7 (AIRSCARF control unit)
End of test

NO
The measurement values are not OK.Possible cause and remedy

- Cable to component W7 (Ground (right wheel housing in trunk))
- Cable to component K40/5f55 (Fuse 55)
- Cable to component K40/5f56 (Fuse 56)
End of test

1.1.3.21. N110 (Weight Sensing System (WSS) control unit)
NotePin assignment Control unit WSS Pushbutton F7Test prerequisite

- The power supply of the control unit K40/2 (Driver fuse and relay module) is OK.
- Fuse K40/2f12 (Fuse 12) is OK.
- Component K40/2kC (Circuit 15R relay) is OK.
Test sequence

- Withdraw ignition key.
- Disconnect connector at control module N110 (Weight Sensing System (WSS) control unit).
- Turn ignition key to position 1.
- Measure direct voltage with multimeter between sockets 5 and 9
Specified value

- Voltage[11.0...14.5] V
Question

- Is the measurement value OK?













YES
The measurement value is OK.This test did not produce any clear result.Possible cause and remedy

- Inspect cables, connectors, plug connections and electrical components for damage, correct connection, loose contact and corrosion, and repair if necessary.
- N110 (Weight Sensing System (WSS) control unit)
End of test

NO
The measurement value is not OK.Possible cause and remedy

- Plug connection at component K40/2 (Driver fuse and relay module)
- Plug connection X28/46 (WSS (Weight Sensing System) connector)
- Check line(s) between connector X28/46 (WSS (Weight Sensing System) connector) and component K40/2 (Driver fuse and relay module) for Short circuit or open circuit.
- Check line(s) between connector X28/46 (WSS (Weight Sensing System) connector) and component N110 (Weight Sensing System (WSS) control unit) for Short circuit or open circuit.
- Check line(s) between connector X28/46 (WSS (Weight Sensing System) connector) and component W36 (Ground, right footwell) for Short circuit or open circuit.
- Check line(s) between connector X28/46 (WSS (Weight Sensing System) connector) and component N110 (Weight Sensing System (WSS) control unit) for Short circuit or open circuit.
End of test

1.1.3.22. N93 (Central gateway control unit)

1.1.3.22. No further information available.

Test prerequisite

- Fuse o.k.
- Fuse o.k.
Test sequence

- Ignition: OFF
- Measurement at component
- Measure direct voltage with multimeter between ground socket and socket
Specified value

- Voltage[11.0...14.5] V
Question

- Is the measurement value OK?
( Picture : Example )







YES
Test sequence

- Unplug connector 8 at control unit N93 (Central gateway control unit).
- Measurement at connector 8
- Measure direct voltage with multimeter between sockets (N93) 8.1 and (N93) 8.6
Specified value

- Voltage[11.0...14.5] V
Question

- Is the measurement value OK?







YES
The measurement value is OK.Restore original status.

- Plug in the connector 8 at component N93 (Central gateway control unit).
- Switch on ignition.
End of test

NO
The measurement value is not OK.Possible cause and remedy in the case of undervoltage

- Lines between N93 (Central gateway control unit) and
- Lines between N93 (Central gateway control unit) and
End of test

NO
The measurement value is not OK.Possible cause and remedy

- Lines between and
- G1 (Battery)
- G2 (generator)
End of test
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