B1825 04

B1825 04

Backrest Position Sensor Circuit, Open







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:
- Control module sensor input is between 0.5 V and 1.1 V ± 0.2 V.

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:
- Backrest Sensor
- Backrest Position
(See also description of readings/activations in diagnostic tool)