DSM / B1785 61
Read the instructions below then
start the fault diagnostic procedure.
Symptom: Memory functions not working
Output is switched off, tries however to activate the engine once each time the ignition is switched on.
Backrest Motor Output Circuit, Relay Stuck to Ground
Fault symptom
Memory functions not working
Output is switched off, tries however to activate the engine once each time the ignition is switched on.
On-board diagnosis
Type of diagnosis:
| Immediately after a soft start is completed. |
Enable criteria:
| When seat operation is permitted. |
Fault criteria:
| Voltage on the control module output is below 6 ±0.2V. |
System reaction to a fault:
| Output is switched off, tries however to activate the engine once each time the ignition is switched on. |
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:
| Motor, Seat Back Rearward |
| (See also description of readings/activations in diagnostic tool) |
