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DDM / B1640 02

Read the instructions below then start the fault diagnostic procedure.

Symptom: Mirror heating, out of order.

  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)