Checking the Background Lamp (Lamp Does Not Come on)

Checking the background lamp (lamp does not come on)

Checking the wires
Check and measure the wire between combined instrument 4 and engine control module connector B 46 for an open circuit as described in Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault , and a short circuit to voltage supply as described in Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.

Additional information:
- To connect the test box, see Connecting the Driver Information Module (DIM) test box Connecting the Driver Information Module (DIM) Test Box.





Is there a fault?

Yes - Verification

No - No Fault Found

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Verification




Verification

Verification

Hint: After the repair it is necessary to check that the fault has been rectified.








- Ignition off.
- Connect connectors, install components, etc.
- Engine running.
- Check that the malfunction indicator light (MIL) is off.
Activate the malfunction indicator light (MIL).





Does the lamp work correctly?

Yes - VERIFIED

No - VERIFICATION FAILEDPAPER

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VERIFIED - Fault Found

VERIFICATION FAILED - Trouble-shooting information

PAPER - No Fault Found

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Trouble-shooting information




Information

Fault-tracing information
The fault should have been detected and remedied. As this is not the case fault-tracing has failed.
Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Do you want to exit fault-tracing?

Yes - FAULT-TRACING FAILED

No - Attempt New Test

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FAULT-TRACING FAILED - FAULT-TRACING FAILED

Attempt New Test - Checking the wires

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