Faulty Signal

Faulty signal

Checking the connectors and components








- Check the lamp
- Check the connector for the upper electronic module (UEM) and cargo compartment lighting/third row reading lamps. Check for contact resistance and oxidation.
Remedy as necessary
- Reinstall the connectors, components etc.

Other information:
- For further information about signals and other values, see Signal specification Signal Specification, Upper Electronic Module (UEM)
- Checking wiring and terminals Checking Wiring And Terminals.

Does the lamp function?

Yes - Verification

No - Checking for open-circuits and short-circuits to voltage

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Checking for open-circuits and short-circuits to voltage
Check the cable between control module terminal #9 and the cargo compartment lighting/third row reading lamps. Check for an open-circuit. Check for a short-circuit to supply voltage.
Also check the ground connection of the cargo compartment lighting/third row reading lamps.
Remedy as necessary.

Other information:
- For further information about signals and other values, see Signal specification Signal Specification, Upper Electronic Module (UEM)
- To connect the breakout box, see Connecting the breakout box Connecting the Breakout Box
- Checking wiring and terminals Checking Wiring And Terminals.










Continue - Verification

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Verification




Verification

Verification

Hint: After carrying out the repair, check that the fault has been remedied.








- Ignition off.
- Reinstall the connectors, components etc.
- Ignition on.
Check that the relevant lamp button and lamp are functioning.

Does the lamp function?

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFIED - Fault Found

VERIFICATION FAILED - Fault-tracing information

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Fault-tracing 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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Attempt New Test - Checking the connectors and components

FAULT-TRACING FAILED - No Fault Found

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