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CIM / B3978 00

Read the instructions below then start the fault diagnostic procedure.

Symptom: Engine does not start. Message appears in display.

  B3978 00


MIU Missing on Bus or Not Added

Fault symptom

Engine does not start.

Message appears in display.

On-board diagnosis

Type of diagnosis:

Continuous

Enable criteria:

Diagnostics runs when key is inserted.

Fault criteria:

Immobilizer code from MIU absent.

System reaction to a fault:

No request for starter motor cranking sent from CIM.

Diagnostic help

See "After fitting a control module" under fault diagnosis, general.

Diagnostic help

Functions in the diagnostic tool related to the fault:

See menu "All - Add/Remove"