Fault code 0323: Diagnosis/troubleshooting
NOTE:
Visual inspection: In the next troubleshooting section, please check first that the affected pins on the rear convenience system control unit plug connection are neither damaged nor corroded. The wiring and plugs of the affected components must also be checked for external damage and proper contact. Repair damaged or corroded pins if possible, otherwise replace affected pins. Repair or replace damaged wires.
NOTE:
Sporadic faults: In the event of faults that occur sporadically, the wiring positions that are linked to moving parts on and in the vehicle must be checked for each system. Various statuses that can cause faults must be simulated with the help of the wiring diagram.
NOTE:
Battery voltage: A battery voltage of between 11.4 and 14.5 V is required for the following troubleshooting procedure. This must be checked and provided, if necessary. On the vehicle electrical system, the voltage to the fuse (input side) must be guaranteed.
NOTE:
The tilt sensor must be joined tightly to the body
WORK INSTRUCTION CHART
| Work instruction | Display OK | If not OK | ||
|---|---|---|---|---|
| 1 | Check fault type using [F8] | 'No signal/communication' (rear convenience system) Go to step 2 'No or incorrect basic setting/adaptation' (tilt sensor) Go to step 2 'Implausible signal' (tilt sensor) Go to step 6 'Faulty' (tilt sensor) Go to step 7 |
||
| 2 | Check power supply to tilt sensor |
|
11.4 to 14.5 V Go to step 3 |
Repair power supply → End |
| 3 | Check serial interface to rear convenience system control unit for short circuit to B+ |
|
< 0.3 V Go to step 5 |
Repair line → End |
| 4 | Check serial interface to rear convenience system control unit for short circuit to ground |
|
∞ Ω Go to step 5 |
Repair line → End |
| 5 | Check serial interface to rear convenience system control unit for open circuit |
|
< 5 Ω Go to step 6 |
Repair line → End |
| 6 | Check installation |
|
Go to step 7 | Repair mounting → End |
| 7 | Replace tilt sensor | → End | ||