XC90 AWD L6-2.9L Turbo VIN 91 B6294T (2004)
Checking components and wiring 3
Disconnect the audio / carphone wiring by disconnecting the lower connector on the cruise control switch
Activate the buttons. Read off the status of the buttons in the cruise control switch
If the readings give a correct result, the fault is in the wiring between the audio / carphone switch and the cruise control switch.
To access the cruise control switch, see RTI switch See: Accessories and Optional Equipment/Sensors and Switches - Accessories and Optional
Equipment/Steering Mounted Controls Assembly/Service and Repair/RTI Switch.
Was the status of the cruise control switch OK?
Yes - Troubleshooting procedure complete
No - Checking components and wiring 4