ACM / B3855 00
Read the instructions below then
start the fault diagnostic procedure.
Symptom: Airbag warning lamp is lit
Driver Side C-pillar Sensor, Faulty Communication
Fault symptom
Airbag warning lamp is lit
On-board diagnosis
Type of diagnosis:
Enable criteria:
Fault criteria:
| • | Control module receives incorrect or no ID from the sensor within a period of 5 seconds with ignition on. |
| • | Control module receives no status from the sensor within a period of 5 s. |
| (normally, the sensor sends out status 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:
