ACM / B0078 00
Read the instructions below then
start the fault diagnostic procedure.
Symptom: Airbag warning lamp is lit
Passenger Side B-pillar Sensor, Faulty Communication
Fault symptom
Airbag warning lamp is lit
On-board diagnosis
Type of diagnosis:
Enable criteria:
Fault criteria:
| • | Control module receives no ID message from the sensor after approx. 5 s after engine start. |
| • | Control module receives no message from the sensor within a 5 s period. |
| (normally, the sensor sends messages 1/s) |
System reaction to a fault:
| • | 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:
