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Home >> Mercedes Benz >> 2010 >> GL 550 (164.886) V8-5.5L (273.963) >> Repair and Diagnosis >> A L L Diagnostic Trouble Codes ( DTC ) >> Testing and Inspection >> Manufacturer Code Charts >> E1369 >> Part 2

Part 2


One or more signals sent from control unit Traction systems via the CAN bus is implausible.


1.1.3.1.1.8. Check power supply at control unit N51 (AIRmatic with ADS control module).

Test 1.1.3.1.1.8.1: Test voltage supply of circuit 30.

Test 1.1.3.1.1.8.2: Test voltage supply of circuit 87.

1.1.3.1.1.8.1. Test voltage supply of circuit 30.

Test 1.1.3.1.1.8.1.1: Test voltage of terminal 30 at control unit N51 (AIRmatic with ADS control module).

Test 1.1.3.1.1.8.1.2: Test of cable for voltage supply

Test 1.1.3.1.1.8.1.3: Test procedure ground cable

1.1.3.1.1.8.1.1. Test voltage of terminal 30 at control unit N51 (AIRmatic with ADS control module).
Test prerequisite

- Battery voltage is OK.
Status of the relevant actual values:
- Terminal 30:Warning! Communication with ECU required.
Test sequence

- Switch off ignition.
- Connect socket box.
- Switch on ignition.

- Measure direct voltage with multimeter between sockets (2.21) 55 and (2.47) 81 of the 126-pole socket box tester.
Specified value

- [11...14 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 actual value is not o.k.Note

- This test did not produce any clear result.
- Select further tests.


1.1.3.1.1.8.1.2. Test of cable for voltage supply
Test prerequisite

- Battery voltage is OK.
Test sequence

- Switch off ignition.
- Connect socket box.
- Switch on ignition.

- Measure direct voltage with multimeter between ground and socket (2.47) 81 of the 126-pole socket box tester.
Specified value

- [11...14 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

- Lines to component N51 (AIRmatic with ADS control module)
- F34f37 (Fuse 37)
End of test

1.1.3.1.1.8.1.3. Test procedure ground cable
Test prerequisite

- Battery voltage is OK.
Test sequence

- Switch off ignition.
- Connect socket box.

- W15/Measure resistance with multimeter between 1 and (2.21) 55 of the 35-pole socket box tester.
Specified value

- [<1ohms]
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

- Ground cable
- W15/1 (Ground (right footwell))
End of test

1.1.3.1.1.8.2. Test voltage supply of circuit 87.

Test 1.1.3.1.1.8.2.1: Test voltage of terminal 87 at control unit N51 (AIRmatic with ADS control module).

Test 1.1.3.1.1.8.2.2: Test of cable for voltage supply

Test 1.1.3.1.1.8.2.3: Test procedure ground cable

1.1.3.1.1.8.2.1. Test voltage of terminal 87 at control unit N51 (AIRmatic with ADS control module).
Test prerequisite

- Battery voltage is OK.
Test sequence

- Switch off ignition.
- Connect socket box.
- Switch on ignition.

- Measure direct voltage with multimeter between sockets (2.21) 55 and (2.43) 77 of the 126-pole socket box tester.
Specified value

- [11...14 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 actual value is not o.k.Note

- This test did not produce any clear result.
- Select further tests.


1.1.3.1.1.8.2.2. Test of cable for voltage supply
Test prerequisite

- Battery voltage is OK.
Test sequence

- Switch off ignition.
- Connect socket box.
- Switch on ignition.

- Measure direct voltage with multimeter between ground and socket (2.43) 77 of the 126-pole socket box tester.
Specified value

- [11...14 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

- Lines to component N51 (AIRmatic with ADS control module)
- N10/1f45 (Fuse 45)
End of test

1.1.3.1.1.8.2.3. Test procedure ground cable
Test prerequisite

- Battery voltage is OK.
Test sequence

- Switch off ignition.
- Connect socket box.

- W15/Measure resistance with multimeter between 1 and (2.21) 55 of the 35-pole socket box tester.
Specified value

- [<1ohms]
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

- Ground cable
- W15/1 (Ground (right footwell))
End of test

1.1.3.1.1.9. Check power supply at control unit N63/1 (DTR control module).
Check power supply at control unit N63/1 (DTR control module).
Test sequence

- Switch off ignition.
- Disconnect coupling 2 at component N63/1 (DTR control module).
- Measure direct voltage with multimeter between sockets (N63/1) 2.8 and (N63/1) 2.4
- Switch on ignition.
Specified value

- [11.0 ... 14.5] V
Question

- Is the value o.k.?













YES
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 measured value is not within the specified value range.Possible cause and remedy

- Cables between component N10/1 (Driver-side SAM control unit with fuse and relay module) and control module N63/1 (DTR control module)5A
- Cable for voltage supply


1.1.3.1.1.10. Check power supply at control unit N71 (Headlamp range adjustment control module).
If the fault code is not current, it may be deleted. In this case, the battery voltage was too low over an extended period.Charge the battery, if necessary.Question:Is there a current undervoltage fault is several control modules?Note:This fault could result in consequential faults. You should therefore process this fault first and then erase the fault memory.

YES
Possible cause and remedy

- Battery voltage too low.Test battery.Charge battery, replace if necessary.
- If fault occurs again:Check alternator.Communication with ECU required
- The quiescent current is too high.Test quiescent current.


NO
Figure legend 1:N71 (Headlamp range adjustment control module)Figure legend 2:N10/1 (Driver-side SAM control unit with fuse and relay module)Test prerequisite

- The relevant actual value is not okay.
- Battery voltage is OK.
- Fuse N10/1f52 (Fuse 52) is OK.
Test sequence

- Switch off ignition.
- Disconnect connector at component N71 (Headlamp range adjustment control module).
- Measure direct voltage with multimeter between sockets (N71) 20 and (N71) 19
- Switch on ignition.
Specified value:Voltage = [11.0...14.5] VQuestion

- Is the measurement value OK?













YES
The measurement value is OK.Figure legend 1:N71 (Headlamp range adjustment control module)Figure legend 2:N10/1 (Driver-side SAM control unit with fuse and relay module)Possible cause or remedy in case of malfunction

- Inspect plug connections N71x1 and (N10/1) I10 for damage, loose contact and corrosion, and repair if necessary.
- N71 (Headlamp range adjustment control module)
End of test













NO
The measurement value is not OK.Figure legend 1:N71 (Headlamp range adjustment control module)Figure legend 2:N10/1 (Driver-side SAM control unit with fuse and relay module)Possible cause and remedy

- Cable (N10/1) I10.3 - (N71) 19 is faulty .
- Cable (N71) 20 - W15/1 (Ground (right footwell)) is faulty .
- N10/1 (Driver-side SAM control unit with fuse and relay module)
End of test













1.1.3.1.1.11. Check power supply at control unit N73 (EIS [EZS] control unit).
Test prerequisite

- Battery voltage is OK.
- Fuse F34f29 (Fuse 29) is OK.
Status of relevant actual value:
- Power supply:Warning! Communication with ECU required.
Specified value

- Power supply [11.0...14.5] V
Question

- Is the actual value o.k.?


YES
The actual value is okay.Possible cause and remedy

- 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..
- Check alternator.
End of test

NO
The actual value is not o.k.Test sequence

- Switch off ignition.
- Detach sockets A and C at component N73 (EIS [EZS] control unit).
- Measure direct voltage with multimeter between sockets (N73) B.2 and (N73) C.1
Specified value

- Voltage [11.0...14.5] V
Question

- Are the measurement values OK?


YES
The measurement values are OK.Possible cause and remedy

- Inspect connector B,C at control unit N73 (EIS [EZS] control unit) for damage, correct connection, loose contact and corrosion and repair, if necessary.
- N73 (EIS [EZS] control unit)
End of test

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

- Check lines between components N73 (EIS [EZS] control unit) and N10/1 (Driver-side SAM control unit with fuse and relay module) and repair or replace if necessary.
- Fuse and component F34 (Interior fuse box)
Continue with button F2

Possible cause and remedy

- Check component N10/1 (Driver-side SAM control unit with fuse and relay module).
Question

- Continue troubleshooting in control unit N10/1 (Driver-side SAM control unit with fuse and relay module)?


1.1.3.1.1.11. No further information available.

1.1.3.1.1.12. Check power supply at control unit N80 (Steering column module).
Manual check of supply voltage
Test prerequisite

- The fuses are OK.
- One of the fault codes 9010/9011 is present, or the associated actual value is not OK.
Test sequence

- Remove component N80 (Steering column module).
- Disconnect connector A at component N80 (Steering column module).
- Switch on ignition.
- Measure direct voltage with multimeter between sockets [N80] A.8 and [N80] A.9
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 connector A at control unit N80 (Steering column module) for damage, correct connection, loose contact and corrosion and repair, if necessary.
- Otherwise select further tests.
End of test

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

- Line between component N80 (Steering column module) and component N10/1 (Driver-side SAM control unit with fuse and relay module)
- Z7/58 (Circuit 30 connector sleeve)
- Line between component N80 (Steering column module) and component W15/1 (Ground (right footwell))
- Z6 (Ground connector sleeve)
- N10/1 (Driver-side SAM control unit with fuse and relay module)
End of test
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