PSM / B1770 04
Read the instructions below then
start the fault diagnostic procedure.
Symptom: Memory functions not working
The seat cannot be adjusted lengthwise.
Legroom Adjustment Motor. Open Circuit
Fault symptom
Memory functions not working
The seat cannot be adjusted lengthwise.
On-board diagnosis
Type of diagnosis:
| Continually when the engine is run. |
Enable criteria:
| When seat operation is permitted. |
Fault criteria:
| • | Voltage on the control module output is below 6 ±0.2V. |
| • | Voltage on the control module output is below B+ -0.7V. |
System reaction to a fault:
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) |
