XC90 AWD L6-2.9L Turbo VIN 91 B6294T (2004)
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Ignition off
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Disconnect the RTI switch
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Ignition on.
Activate and read off the status of the buttons in the audio/carphone switch.
If the readings give a correct result, the fault is in the RTI switch.
Other information:
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To access the RTI switch, see Keypad steering wheel, replacing, TF-80SC AWD, AW50/51 AWD, M66 AWD See: Sensors and Switches -
Accessories and Optional Equipment/Steering Mounted Controls Assembly/Service and Repair/Keypad Steering Wheel, Replacing.
Was the audio/carphone switch status OK?
Yes - Troubleshooting procedure complete
No - Checking components and wiring
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