B1640

B1640 02

Mirror Heating Circuit, Short to Ground







Fault symptom
- Mirror heating, out of order.

On-board diagnosis

Type of diagnosis:
- Continuous

Enable criteria:
- Ignition ON.
- During electric mirror heating activation.

Fault criteria:
- Current too high.

System reaction to a fault:
- The door module attempts to activate electric mirror heating 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:

Test value:
- Mirror Heating Driver Door
(See also description of readings/activations in diagnostic tool)