Invalid Combination. Permanent Fault

Invalid combination. Permanent fault

Checking the cable and component
If the car is equipped with a Road Traffic Information (RTI) system, disconnect the RTI switch from the electrical radio and audio switch.
This is so that the fault can be located.
Read off the status of the buttons in the audio/carphone switch.
If any of the buttons are activated without having been manually activated, the fault is in the RTI switch.
Disconnect the lower switch from the audio and radio switch. This is so that the fault can be located.
Read off the status of the buttons in the audio/carphone switch.
If any of the buttons are activated without having been manually activated, the fault is in the radio and audio switch.
Disconnect the lower switch from the cruise control switch. This is so that the fault can be located.
Read off the status of the buttons in the audio/carphone switch.
If any of the buttons are activated without having been manually activated, the fault is in the cruise control switch, or in the cable between the cruise control switch and the radio and carphone switch.
Remedy as necessary.

Other information:
- To access or replace the RTI switch, see RTI switch RTI Switch
- To access or replace the audio and carphone switch, see Keypad steering wheel, replacing, TF-80SC AWD, AW50/51 AWD, M66 AWD Keypad Steering Wheel, Replacing
- To access or replace the cruise control switch, see Keypad steering wheel, replacing, TF-80SC AWD, AW50/51 AWD, M66 AWD Keypad Steering Wheel, Replacing.





Select "Continue" when the fault has been remedied.

Continue - Verification

-------------------------------------------------

Checking the cable and component
Check the cable between the audio and carphone switch terminals #1, #2, #3 and cruise control switch terminals #1, #2, #3. Check for a short-circuit to supply voltage.
Remedy as necessary.

Other information:
To access or replace the audio and carphone switch, see Keypad steering wheel, replacing, TF-80SC AWD, AW50/51 AWD, M66 AWD Keypad Steering Wheel, Replacing
- Checking wiring and terminals Checking Wiring and Terminals.

Select "Continue" when the fault has been remedied.

Continue - 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 - Troubleshooting procedure complete

No - Fault-tracing information

-------------------------------------------------

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

------------------------

Attempt New Test - Checking the cable and component

-------------------------------------------------