Diagnosis/troubleshooting PSM 5.3
DIAGNOSIS/TROUBLESHOOTING PSM 5.3 (FAULT CODE 4231)
| Work instruction | Display OK | If not OK | ||
|---|---|---|---|---|
| 1 | Check line for short circuit to B+ |
|
< 0.3V Step 2 |
Short circuit to B+ between plug om PSM control module pin 26 and plug on PSM hydraulic unit pin 2 ->End |
| 2 | Check line for short circuit to ground |
|
Step 3 | Short circuit to ground between plug om PSM control module pin 26 and plug on PSM hydraulic unit pin 2 ->End |
| 3 | Check line for open circuit |
|
< 5 Step 4 |
Break in wiring between plug on PSM control module pin 26 and plug on PSM hydraulic unit pin 2 |
| 4 | Replace hydraulic unit | ->End | ||