Speed-Sensor, Front Right: Diagnosis/Troubleshooting
DIAGNOSIS/TROUBLESHOOTING - FAULT CODE 4201
| Work instruction | Display OK | If not OK | ||
|---|---|---|---|---|
| 1 | Visual inspection |
|
Step 2 |
|
| 2 | Check speed sensor |
|
1 k to 3k Step 3 |
> 3 k or < 1 k Step 9 |
| 3 | Check function of speed sensor |
|
Measurable AC voltage, approx. as great as for speed sensor of wheel on opposite side at same wheel speed Step 5 |
No AC voltage measurable Step 5 |
| 4 | Mechanical functionality |
|
Step 9 | Clean toothed ring and replace if necessary End |
| 5 | Check speed sensor leads for short circuit to B+ |
|
< 0.3 V Step 6 |
Short circuit to B+ between pin 15 or pin 16 of PMS control unit plug and pin 4 or pin 5 of speed sensor Repair wiring harness End |
| 6 | Check speed sensor leads for short circuit to ground |
|
Step 7 | Short circuit to ground between pin 15 or pin 16 of PSM control unit plug and pin 4 or pin 5 of speed sensor Repair wiring harness End |
| 7 | Check speed sensor leads for open circuit |
|
0 Step 8 |
Open circuit on speed sensor leads Repair wiring harness End |
| 8 | Check speed sensor leads for short circuit |
|
Step 10 | Short circuit between speed sensor leads Repair wiring harness End |
| 9 |
|
End | ||
| 10 |
|
End | ||