Stop Light Switch: Diagnosis/Troubleshooting
DIAGNOSIS/TROUBLESHOOTING - FAULT CODE 4340
| Work instruction | Display OK | If not OK | ||
|---|---|---|---|---|
| 1 | Visual inspection |
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Step 2 |
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| 2 | Check stop light input signals in control unit |
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Tester display:
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Step 3 |
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Tester display:
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Step 3 | ||
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Step 3 | ||
| 3 | Check stop light switch |
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Step 8 | |
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< 5 | |||
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< 5 Step 4 |
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| 4 | Check break-contact circuit for short circuit to B+ |
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< 0.3 V Step 5 |
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| 5 | Check break-contact circuit for open circuit |
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> 11 V Step 6 |
Open circuit between pin 37 of PSM control unit and pin 4 of stop light switch Repair wiring harness End |
| 6 | Check make-contact circuit for short circuit to B+ |
|
< 0.3 V Step 7 |
Short circuit to B+ between pin 32 of PSM control unit and pin 2 of stop light switch Repair wiring harness End |
| 7 | Check make-contact circuit for open circuit |
|
> 11 V Step 9 |
Open circuit between pin 32 of PSM control unit and pin 2 of stop light switch Repair wiring harness End |
| 8 |
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End | ||
| 9 |
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End | ||