Faulty Signal. Permanent Fault

Faulty signal. Permanent fault

Checking the connectors




- Ignition off.
- Check the control module connectors for contact resistance and oxidation and remedy according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault.
- Reinstall the components and connectors etc.
- Ignition on
Activate the siren.
A short audible acknowledgement signal should be heard from the siren.
If the function is now OK this indicates that the fault was caused by poor contact in the connectors.

Other information:
- To access / replace the siren, see Siren Replacing Siren.
- To access / replace the control module, see VGLA-control module VGLA-Control Module.









Is the function OK?

Yes - FAULT FOUND

No - Checking the wiring

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Checking the wiring




- Ignition off.
Check the cable between control module #A22 (22) and siren #3 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. Also check whether the cable is too close to a source of interference.

Other information:
- To access / replace the siren, see Siren Replacing Siren.
- 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 a new siren according to Siren Replacing Siren.





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:








- Reinstall the connectors, components etc.
- Ignition on.
Activate the siren.
A short audible acknowledgement signal should be heard.





Is the function OK?

Yes - fault foundNo 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 - FAULT-TRACING FAILED

Attempt New Test - Checking the connectors

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