Signal Too High

Signal too high

Checking the wiring








- Ignition off.
Check the power supply cable. Check for a short-circuit to supply voltage.
Take readings between:
- Central electronic module (CEM) terminal #H20 (#34) and LED for lock indication.
Remedy as necessary.

Other information
- Connecting the breakout box Connecting the Breakout Box, Central Electronic Module (CEM)
- Signal specification Signal Description, Central Electronic Module (CEM)
- Control module relay box passenger compartment Service and Repair
- Checking wiring and terminals Checking Wiring and Terminals





Continue - Verifying LEDs

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Verifying LEDs




Verifying LEDs

Verification

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








- Ignition off.
- Reinstall the connectors, components etc.
- Ignition on.
Use the remote control to activate locking and unlocking of the vehicle.
The LEDs must light for 5 minutes when the central locking locked via the remote control.
The LEDs must go out when the central locking is unlocked via the remote control.

Is the function OK?

Yes - Troubleshooting procedure complete

No - No Fault Found

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No Fault Found - 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 - Exit Fault-Tracing

No - Attempt New Test

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Attempt New Test - Checking the wiring

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