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REC / B3720 06

Read the instructions below then start the fault diagnostic procedure.

  B3720 06


In the event of a short-circuit to ground, the rear window wiper runs constantly.

In the event of an open-circuit, the rear window wiper does not work.



On-board diagnosis

Type of diagnosis:

Continuous

Enable criteria:

Ignition ON.

Fault criteria:

Voltage on the control module output exceeds 6 V when the rear window wiper is not running.

System reaction to a fault:

None

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:

Activation:
Rear window Wiper, Relay