Checking The Tail Lamps

Checking the tail lamps

Checking the wiring and component




- Ignition off.
Check that fuse 24 in the integrated relay / fusebox in the engine compartment is intact.
Check that the bulbs for the tail lamps are intact.
Check the cable between fuse 24 and control module connector F terminal #8 (#B8). Check the cable between control module connector B1 terminal #2 (#A32) and left and right tail lamps terminal #2.3. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for contact resistance and oxidation according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the ground leads from each tail lamp. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for contact resistance and oxidation according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the cable between control module connector B1 terminal #2 (#A32) and left and right tail lamps terminal #2.3, rear side marker lamps terminal #1 and the license plate lighting. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the cable between control module connector F terminal #2 (#B2) and front side marker lamps terminal #1, lighting switch terminal #1, beam height adjustment for the left and right headlamp terminal #3 and the engine control module (ECM). Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Remedy as necessary.

Other information
- To connect the breakout box, see Connecting the breakout box Connecting The Breakout Box. Central Electronic Module (CEM)
- For information about signals, see Signal specification Signal Description. Central Electronic Module (CEM)
- To access or replace the relay or fuse, see the inside of the cover on the engine compartment relay/fusebox.









Continue - Verification

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Verification




Verification

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








- Ignition off.
- Reinstall the connectors, components etc.
- Ignition on.
Activate the tail lamp. The tail lamp must both light and go out.





Does the tail lamp light and go out?

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFICATION FAILED - Fault-tracing information

VERIFIED - FAULT FOUND

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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 - Exit fault-tracing

No - Attempt New Test

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Attempt New Test - Checking the wiring and component

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