AMP2 / B1000 34

Read the instructions below then start the fault diagnostic procedure.

Symptom: Amplifier not functioning.

B1000 34

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"