B3664 01

B3664 01

Sunroof Button, Input Short to B+







Fault symptom
- Sunroof cannot be operated.

On-board diagnosis

Type of diagnosis:
- Continuous

Enable criteria:
- Ignition ON.

Fault criteria:
- When voltage on the input exceeds 4.9 V.

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:

Test value:
- Sunroof Button, Open Circuit
(See also description of readings/activations in diagnostic tool)