Button illumination
Read the instructions below then
start the fault diagnostic procedure.
Symptom: Button illumination malfunctioning
Fault symptoms
Button illumination malfunctioning
Diagnostic help
Check that the courtesy lights are working. If not: check fuse 8.
The following values can be read with the diagnostic tool:
|
-
|
Rheostat Night Panel Filtered
|
|
-
|
Night Panel (Bus from SID)
|
The following function can be activated with the diagnostic tool:
|
-
|
Button and control illumination PWM output
|
Checking the wiring harness
Jiggle the wiring harness at several points and in several directions to detect intermittent open circuits and short circuits. Note the reaction of the multimeter, test lamp or diagnostic tool during the check.
