Signal Too Low

Signal too low

Checking the signal from the trunk lid handle

Note! Only applies to 4-door cars.




- Ignition on
- Read off the status from the trunk lid handle. Open and close the trunk lid using the handle.
The status should alternate as the handle is affected.
The fault is permanent if the status does not change.
If the status changes, this indicates an intermittent fault, i.e. the fault was present previously but is not active at the moment.










Continue - Checking cable and component

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Checking cable and component
Disconnect the connector from the lamp housing for the license plate lighting. Check that the button has not stuck in the pressed in position. Check that there is not a short-circuit in the contact breaker for the switch by taking a reading between terminal #1 and ground.
Check the resistance between terminals #1 and #3 on the switch. The resistance must be infinite or near 0 ohm depending on the position of the switch.
Check the signal cable between terminal #43 (#F3) on the connector for the rear electronic module (REM) and terminal #1 on the connector for the lamp housing for the license plate lighting. Check for a short-circuit to ground.
Remedy as necessary.

Other information
- Connecting the breakout box Connecting Breakout Box, Rear Electronic Module (REM)
- Signal specification Signal Specification, Rear Electronic Module (REM)
- Disconnecting the rear electronic module (REM): Integrated relay / fusebox cargo compartment / rear electronic module, replacing Integrated Relay/Fusebox Cargo Compartment/Rear Electronic Module (REM), Replacing
- 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
- Read off the status from the trunk lid handle. Open and close the trunk lid using the handle.
The status should alternate as the handle is affected.









Is the status OK?

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 - FAULT-TRACING FAILED

No - Attempt New Test

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FAULT-TRACING FAILED - FAULT-TRACING FAILED

Attempt New Test - Checking the signal from the trunk lid handle

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