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 and carphone switch.

If any of the buttons are activated without having been depressed, 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 and carphone switch.

If any of the buttons are activated without having been manually depressed, the fault is in the audio and carphone 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 and 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
To access or replace the audio and carphone switch, see KEYPAD STEERING WHEEL, REPLACING
To access or replace the cruise control switch, see KEYPAD STEERING WHEEL, REPLACING .

Fig 1: Identifying VCT2000 Diagnostic Tool Symbol In VIDA

Courtesy of VOLVO CARS CORPORATION

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Refer to VERIFICATION