B1345

B1345 04

Power Ground Missing







Fault symptom
- Sunroof cannot be operated.

On-board diagnosis

Type of diagnosis:
- Continuous

Enable criteria:
- Ignition ON.

Fault criteria:
- When differential voltage between control module ground and logic ground is more than 2V (± 1V).

System reaction to a fault:
- Sunroof out of order.

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:
- Fault on ground lead between control module and REC.

Functions in the diagnostic tool related to the fault:

Test value:
- Battery Voltage