Signal Missing

Signal missing

Checking the power supply and ground terminal




- Ignition off.
Check the cable between Central electronic module (CEM) #A41 (#41) and Remote Receiver Module (RRX) #A1 for open circuit.
Check the signal cable between central electronic module (CEM) terminals #A35 (#35) and Remote Receiver Module (RRX) #A5 for an open circuit, short-circuiting to ground, and short-circuiting to voltage.
Check the cable between remote control receiver (RRX) terminal #A3 and ground. Check for an open-circuit. Also check the ground terminal for oxidation.
Remedy the cables as necessary.

Other information
- Connecting the breakout box Connecting the Breakout Box, Central Electronic Module (CEM)
- Signal specification Signal Description, Central Electronic Module (CEM)
- Locking system receiver Locking System Receiver
- Checking wiring and terminals Checking Wiring and Terminals









Was a fault detected?

Yes - Verification

No - Checking communication

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Checking communication




- Ignition off.
Check if the communication with remote receiver (RRX) works by locking and unlocking the vehicle with the remote control's buttons.

Is the function OK?

Yes - Verification

No - Replacing the control module

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Replacing the control module




- Ignition off.
If no fault is discovered on the cables for the remote control receiver (RRX), the unit will probably need to be replaced.

Other information
- Locking system receiver Locking System Receiver





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.
Check if the communication with remote receiver (RRX) works by locking and unlocking the car with the remote control's buttons.

Is the function OK?

Yes - Troubleshooting procedure complete

No - 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 power supply and ground terminal

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