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ACM Ch.61034050- / B3856 08

Read the instructions below then start the fault diagnostic procedure.

Symptom: Airbag warning lamp is lit

  B3856 08


Passenger Side C-pillar Sensor Circuit, Open

Fault symptom

Airbag warning lamp is lit

On-board diagnosis

Type of diagnosis:

Continuous

Enable criteria:

Ignition ON.

Fault criteria:

Incorrect signal from sensor.

System reaction to a fault:

The airbag system should be considered non-operational. There may, however, be some functionality.
The control module ignores the activation command from the sensor as long as a fault is active.

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

IMPORTANT

Read "Before starting fault diagnosis" under Fault diagnosis, general before beginning fault diagnosis.

Diagnostic help

Diagnosis regards: