ACM / U2139 00
Read the instructions below then
start the fault diagnostic procedure.
Symptom: Airbag warning lamp on
CIM Missing on BUS
Fault symptom
Airbag warning lamp on
On-board diagnosis
Type of diagnosis:
Enable criteria:
Fault criteria:
| No communication with CIM. |
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
Diagnosis regards:
| Electrical fault in connecting leads or component. |
