Symptom Troubleshooting Chart - Backup Lamps
SYMPTOM TROUBLESHOOTING CHART - BACKUP LAMPS
| Problem |
Possible Cause |
Action |
- Backup lamps are inoperative
|
- Circuitry
- Digital transmission range (TR) sensor (A/T)
- Backup lamp switch (M/T)
- Smart junction box (SJB)
|
|
- Backup lamp is inoperative (Individual)
|
|
- MEASURE the resistance between the inoperative backup lamp connector pin 1, circuit B harness side and ground.
- If the resistance is less than 5 ohms, Repair circuit B/P. Test the system for normal operation.
- If the resistance is not less than 5 ohms, Repair circuit B. Test the system for normal operation.
|
- Backup tamps are on continuously
|
- Circuitry
- Digital transmission range (TR) sensor (A/T)
- Backup lamp switch (M/T)
|
- DISCONNECT the digital TR sensor 0140-05 (automatic transmission) or the backup lamp switch C169 (manual transmission).
- If the backup lamps continue to illuminate, Repair circuit B/P. Test the system for normal operation.
- If the backup lamps do not continue to illuminate, Install a new digital TR sensor or backup lamp switch. Test the system for normal operation.
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