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DSM / B3921 01

Read the instructions below then start the fault diagnostic procedure.

Symptom: Memory functions not working

  B3921 01


Group 2 Motor Output Circuit, Short to B+

Fault symptom

Memory functions not working

On-board diagnosis

Type of diagnosis:

Continually when the engine is run.

Enable criteria:

When seat operation is permitted.

Fault criteria:

When voltage on output exceeds 12V.
Output NOT activated.

System reaction to a fault:

No memory functions work

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

Diagnosis regards:

Electrical fault in connecting leads or component.