SRM / B3663 01
Read the instructions below then
start the fault diagnostic procedure.
Symptom: Sunroof cannot be operated.
Sunroof Button, Output Short to B+
Fault symptom
Sunroof cannot be operated.
On-board diagnosis
Type of diagnosis:
Enable criteria:
| When button pressed or sunroof motor active and when the engine is not cranking. |
Fault criteria:
| When voltage on output exceeds 5V. |
System reaction to a fault:
| In case of a fault, the control module will ignore button presses. |
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:
| (See also description of readings/activations in diagnostic tool) |
