PSM / B3918 01
Read the instructions below then
start the fault diagnostic procedure.
Symptom: No memory functions work
Engine does not go in the direction of the button but can go in the opposite direction.
Switch Tilt Backward Circuit, Short to B+
Fault symptom
No memory functions work
Engine does not go in the direction of the button but can go in the opposite direction.
On-board diagnosis
Type of diagnosis:
Enable criteria:
| When seat operation is permitted. |
Fault criteria:
| Fault in control button circuit. |
System reaction to a fault:
| Memory functions not working |
| Engine does not go in the direction of the button but can go in the opposite direction. |
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:
| (See also description of readings/activations in diagnostic tool) |
