B1000 34 - 02

B1000 34

Control Module. Internal Fault







Fault symptom
- Amplifier not functioning.

On-board diagnosis


Enable criteria:
- O-bus active.

Fault criteria:
- Control module on-board diagnostics has detected a RAM error.

System reaction to a fault:
- Amplifier not functioning.

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
- Replace ECU
- See "Procedure for control module replacement"