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REC / B1020 71

Read the instructions below then start the fault diagnostic procedure.

Symptom: The windscreen wipers do not work in automatic mode.

  B1020 71


Rain Sensor Communication Failure

Fault symptom

The windscreen wipers do not work in automatic mode.

On-board diagnosis

Type of diagnosis:

Continuous

Enable criteria:

Ignition ON.
Wiper stalk in interval position.

Fault criteria:

No or faulty communication with the rain sensor.

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

The diagnostic trouble code may be generated if the sensor was covered with snow or ice.