Signal Too High. Permanent Fault

Signal too high. Permanent fault

Checking the connector












- Make a note of any radio code.
- Ignition off.
- Disconnect the battery negative lead.
- Disconnect SRS control unit and the B connector on combination instrument.
- Connect the battery negative lead.
- Ignition on.
Check the B connector on the control unit and combined instrument for a short circuit to voltage supply, as described in Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Do the necessary corrective action.













Additional information:
- To access/replace the control unit, see Service and Repair.
- To disconnect/replace the combined instrument. Replacing the driver information control unit Replacing the Driver Information Control Unit.

Select Continue when the fault has been rectified.

Continue - Checking the wiring

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Checking the wiring








- SRS control unit and combined instrument disconnected.
- Ignition on.
Connect a voltmeter between control unit #25 and ground and check for a short circuit to voltage supply, as described in Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.

Hint: The voltage should be approximately 7 V.

If no short circuit to voltage supply is found this indicates that the fault is in the combined instrument.
Do the necessary corrective action.

Additional information:
- To access/replace the control unit, see Service and Repair.
- To disconnect/replace the combined instrument. Replacing the driver information control unit Replacing the Driver Information Control Unit.









Select Continue when the fault has been rectified.

Continue - Verification

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Verification




Verification

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




- Ignition off
- Disconnect the battery negative lead
- Reinstall the connectors, components etc.
- Ignition on
- Connect the battery negative lead.

Warning! There must not be anyone inside the passenger compartment when the battery is connected.

- Read off diagnostic trouble codes (DTCs).
The fault is no longer present if the status of the diagnostic trouble code (DTC) has changed to intermittent.





Does the status change?

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFIED - FAULT FOUND

VERIFICATION FAILED - Trouble-shooting information

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Trouble-shooting 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 connector

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