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ACM / B3857 00

Read the instructions below then start the fault diagnostic procedure.

Symptom: Airbag warning lamp is lit

  B3857 00


Driver Side C-pillar Sensor, Wrong Sensor Installed

Fault symptom

Airbag warning lamp is lit

On-board diagnosis

Type of diagnosis:

Asynchronous: With ignition on and during sensor reset

Enable criteria:

Ignition ON.

Fault criteria:

Control module receives incorrect ID from the sensor.

System reaction to a fault:

The control module ignores the activation command from the sensor as long as a fault is active.

Diagnostic help

IMPORTANT

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