S80 T6 Executive L6-2.8L Turbo VIN 90 B6284T (2001)
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Ignition off
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Disconnect the audio / car-phone switch by disconnecting the lower connector on the audio / car-phone switch
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Ignition on.
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 audio / car-phone switch.
Other information:
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To access the audio / car-phone switch, see RTI switch See: Steering Mounted Controls Assembly/Service and Repair/RTI Switch.
Was the status of the cruise control switch OK?
Yes - FAULT FOUND
No - Checking components and wiring
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Checking components and wiring