PDM / B2652 01
Read the instructions below then
start the fault diagnostic procedure.
Symptom: Button lighting not working.
Switch Illumination Circuit, Short to Ground
Fault symptom
Button lighting not working.
On-board diagnosis
Type of diagnosis:
Enable criteria:
| When panel lighting is activated. |
Fault criteria:
| Control module signal invalid. |
System reaction to a fault:
| The control module attempts to activate button lighting during each new driving cycle. |
Checking the wiring harness
Move the wiring harness at several spots and in several directions to reveal intermittent breaks and short-circuits. Check switches, connectors and crimp connections for oxidation, retracted pins and pin clamping force.
Diagnostic help
Diagnosis regards:
| Electrical fault in connecting leads or component. |
Functions in the diagnostic tool related to the fault:
| Switch Illumination Passenger Door |
| (See also description of readings/activations in diagnostic tool) |
