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ACM / B0120 01

Read the instructions below then start the fault diagnostic procedure.

Symptom: Airbag warning lamp is lit

  B0120 01


Driver Side Rear Belt Pretensioner Circuit, Short to B+

Fault symptom

Airbag warning lamp is lit

On-board diagnosis

Type of diagnosis:

Continuous

Enable criteria:

Ignition ON.

Fault criteria:

Power consumption over 2 mA

System reaction to a fault:

The airbag system should be considered non-operational. There may, however, be some functionality.

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: