Incorrect Combination. Permanent Fault

Incorrect combination. Permanent fault

Checking the wires and components
If vehicle is equipped with RTI, disconnect RTI switch unit from audio/radio switch unit.
Do this to localise fault.
Make a note of the audio/telephone switch-unit button status.
If a button is activated and has not been pressed manually, the fault is in the RTI switch unit.
Disconnect lower connector from audio/radio switch unit. Do this to localise fault.
Make a note of the audio/telephone switch-unit button status.
If a button is activated and has not been pressed manually, the fault is in the audio/telephone switch unit.
Disconnect lower connector from cruise-control switch unit. Do this to localise fault.
Make a note of the audio/telephone switch-unit button status.
If a button is activated and has not been pressed manually, the fault is in the cruise-control switch unit or in the wire between the cruise-control switch unit and audio/telephone switch unit.
Do the necessary corrective action.

Additional information:
- To access/replace RTI switch unit, see
- To access/replace audio/telephone switch unit, see Keypad unit, steering wheel, replacing Keypad Unit, Steering Wheel, Replacing
- To access/replace cruise control switch unit, see Keypad unit, steering wheel, replacing Keypad Unit, Steering Wheel, Replacing.





Press Continue when fault has been repaired.

Continue - Verification

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Checking the wires and components
Check wires for short circuit to voltage supply between audio/telephone switch units 1, 2, 3 and cruise-control switch units 1, 2, 3, see Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Do the necessary corrective action.

Additional information:
To access/replace audio/telephone switch unit, see Keypad unit, steering wheel, replacing Keypad Unit, Steering Wheel, Replacing.

Press Continue when fault has been repaired.

Continue - Verification

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Verification




Verification

Verification

Hint: After the repair it is necessary to check that the fault has been rectified.




- Ignition off.
- Connect the connectors, install the components, etc.
- Ignition on.
Check that all buttons on audio/telephone switch unit work.





Do buttons work?

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 - FAULT-TRACING FAILED

No - Attempt New Test

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FAULT-TRACING FAILED - No Fault Found

Attempt New Test - Checking the wires and components

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