Signal Too Low. Permanent Fault

Signal too low. Permanent fault

Checking the wiring
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: Take a reading between terminal #1 and ground.
Check the signal cable between rear electronic module connector terminal #B07 (terminal #D7) and lamp housing connector terminal #1 for the license plate lighting for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.

Other information
- For further information about signals and other values, see Signal specification Pinout Values and Diagnostic Parameters.
- To connect the breakout box, see Connecting the breakout box Connecting the Breakout Box.
- To access the rear electronic module, see Relay/fuse box cargo compartment/Rear electronic module (REM), replacing Integrated Relay/Fusebox Cargo Compartment/Rear Electronic Module (REM), Replacing.
- To access and replace the license plate lighting, see Bulb, number plate lighting, replacing Bulb, Number Plate Lighting, Replacing.










Continue - Verification

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Verification




Verification

Verification

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








- Ignition off.
- Install the components, connect the connectors, etc.
Close the boot lid.
Lock the car by remote control.
Make sure that the boot lid is correctly locked and that opening works.

Is function OK?

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 wiring

FAULT-TRACING FAILED - No Fault Found

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