S80 T6 L6-2.9L Turbo VIN 91 B6294T (2002)
-
Ignition off.
-
Disconnect RTI switch unit.
-
Ignition on.
Activate buttons and read status on audio/telephone switch unit buttons.
If read-out gave a correct result the fault is in the RTI switch unit.
Additional information:
-
To access RTI switch unit, see RTI switch See: Accessories and Optional Equipment/Sensors and Switches - Accessories and Optional
Equipment/Steering Mounted Controls Assembly/Service and Repair/RTI Switch.
Did read-out of status on audio/telephone switch unit give a correct result?
Yes - FAULT FOUND
No - Checking the wires and components
-------------------------------------------------
Checking the wires and components
