B1020 71

B1020 71

Rain Sensor Circuit, Communication Error







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

Diagnosis regards:
- Electrical fault in connecting leads or component.