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AMP1 / U2155 1F

Symptom: Intermittent amplifier function.

  U2155 1F


O-buss. Intermittent Open Circuit before Control Module

Fault symptom

Intermittent amplifier function.

On-board diagnosis

Type of diagnosis:

Continuous

Enable criteria:

All modes except starter motor cranking

Fault criteria:

No contact with one, several or all O-bus systems.

System reaction to a fault:

Intermittent amplifier function.

Diagnostic help

Diagnosis regards:

Electrical fault on bus leads or in the component.