ACM / B0120 02

Read the instructions below then start the fault diagnostic procedure.

Symptom: Airbag warning lamp is lit

B0120 02

Fault symptom

Airbag warning lamp is lit

On-board diagnosis

Enable criteria:

Ignition ON.

Fault criteria:

Voltage applied to control module pin 45 is lower than 2V for 1 s.

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.