Faulty Signal. Permanent Fault

Faulty signal. Permanent fault

Checking the wiring




- Ignition off.
Check the glass breakage sensor control module and VGLA control module connectors for contact resistance and oxidation according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault.
Check the cable between VGLA control module #A22 and the glass breakage sensor #4 for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault , short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault and for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault. Check the cable between the glass breakage sensor #5 and ground for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault.

Other information:
- The voltage between glass breakage sensor control module connector #1 and ground should be battery voltage.
- To access / replace the control module, see VGLA-control module VGLA-Control Module.
- To access / replace the glass breakage sensor control module, see Ultrasonic or glass breakage control module Ultrasonic Or Glass Breakage Control Module.
- For further information about signals and other values, see Signal specification, lock and alarm, (VGLA) Signal Specification.
- To connect the breakout box, see Connecting the breakout box, lock and alarm (VGLA) Connecting The Breakout Box, Lock And Alarm (VGLA).
Remedy as necessary.









Was a fault detected?

Yes - Verification

No - Replacing the component

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Replacing the component
Try replacing the glass breakage sensor control module according to Ultrasonic or glass breakage control module Ultrasonic Or Glass Breakage Control Module.

Select "Continue" when complete.

Continue - Verification

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Verification

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




- Remove the key from the ignition switch.
- Ensure that all doors and hatches are shut including the hood and the trunk lid / tailgate.
- Activate the alarm by locking the car using the remote control. Wait approximately 30 seconds. Unlock the car again.
- Ignition on.
Read off diagnostic trouble code (DTC) status.
The status should display intermittent fault.





Does the status display an intermittent fault?

Yes - FAULT FOUND

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 - FAULT-TRACING FAILED

No - Attempt New Test

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FAULT-TRACING FAILED - No Fault Found

Attempt New Test - Checking the wiring

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