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DSM / B3923 29

Read the instructions below then start the fault diagnostic procedure.

Symptom: Memory functions not working Seat can jerk during start and stop.

  B3923 29


Tilt Position Sensor Circuit, no pulses

Fault symptom

Memory functions not working

Seat can jerk during start and stop.

On-board diagnosis

Type of diagnosis:

Continually when the engine is run.

Enable criteria:

When seat operation is permitted.

Fault criteria:

No signal from position sensor while engine running.

System reaction to a fault:

No memory functions work
The control module loses end position calibration for the motor in question.

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.

Functions in the diagnostic tool related to the fault:

Test value:
Tilt Sensor
(See also description of readings/activations in diagnostic tool)