BCM / B2556 0F
Read the instructions below then 
start the fault diagnostic procedure.
Symptom: Interior lighting not working.
	
Interior Light, Circuit Malfunction

Fault symptom
Interior lighting not working.
On-board diagnosis
Type of diagnosis:
Enable criteria:
| Interior lighting activated. | 
Fault criteria:
| When there is no voltage on the control module input and output to interior lighting, but the lighting should be on. | 
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:
| Interior Light Feed (not PWM). | 
| (See also description of readings/activations in diagnostic tool) |