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AMP1 / B1000 35

Read the instructions below then start the fault diagnostic procedure.

Symptom: Amplifier not functioning.

  B1000 35


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 ROM 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"