Diagnosis/troubleshooting PSM 5.7
DIAGNOSIS/TROUBLESHOOTING PSM 5.7 (FAULT CODE 4340)
| Work instruction | Display OK | If not OK | ||
|---|---|---|---|---|
| 1 | Stop light switch function test |
|
0-5 0-5 Step 2 |
Replace stop light switch ->End |
| 2 | Check lead from PSM control module to stop light switch for short circuit to ground/open circuit |
|
>11 V Step 2 |
Short circuit to ground or open circuit between PSM control module plug pin 37 and ignition lock pin 15 ->End |
| 3 | Check lead from PSM control module to stop light switch for short circuit to B+ |
|
< 0.3V Step 3 |
Short circuit to B+ between PSM control module plug pin 37 and stop light switch pin 3 ->End |
| 4 | Short circuit to ground/open circuit in the signal circuit |
|
>11 V Step 4 |
Short circuit to ground or open circuit between PSM control module plug pin 32 and stop light switch pin 2, or stop light switch faulty ->End |
| 5 | Short circuit to B+ in signal circuit |
|
< 0.3V Step 5 |
Short circuit to B+ between PSM control module plug pin 32 and stop light switch pin 2 ->End |
| 6 | PSM control module faulty | ->End | ||