B3089

B3089 0F

UAM, Internal Fault







Fault symptom
- Message "SERVICE ANTI-THEFT ALARM" shown on SID.

On-board diagnosis

Type of diagnosis:
- Continuous

Enable criteria:
- Diagnosis runs when car alarmed or when ignition on.

Fault criteria:
- Signal error from ultrasound sensor.

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:
- To locate electrical faults in the ultrasound sensor internal electronics.