Tech Tips
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
| Symptom | Suspected Area | See page |
|---|---|---|
| Oil leakage | Oil (level too high or wrong grade) | |
| Carrier oil seal (worn or damaged) | ||
| Companion flange (loose or damaged) | ||
| Noise in front differential | Oil level (low or wrong grade) | |
| Ring gear or drive pinion (worn or chipped) | ||
| Backlash adjustment (defective) | ||
| Preload adjustment (defective) | ||
| Tooth contact between ring gear and drive pinion (defective) | ||
| Bearing (worn) |
| Symptom | Suspected Area | See page |
|---|---|---|
| Oil leakage | Oil (level too high or wrong grade) | |
| Carrier oil seal (worn or damaged) | ||
| Companion flange (loose or damaged) | ||
| Noise in rear differential | Oil level (low or wrong grade) | |
| Ring gear or drive pinion (worn or chipped) | ||
| Backlash adjustment (defective) | ||
| Preload adjustment (defective) | ||
| Tooth contact between ring gear and drive pinion (defective) | ||
| Bearing (worn) |
| Symptom | Suspected Area | See page |
|---|---|---|
| Oil leakage | Oil (level too high or wrong grade) | |
| Carrier oil seal (worn or damaged) | ||
| Companion flange (loose or damaged) | ||
| Noise in rear differential | Oil level (low or wrong grade) | |
| Ring gear or drive pinion (worn or chipped) | ||
| Backlash adjustment (defective) | ||
| Preload adjustment (defective) | ||
| Tooth contact between ring gear and drive pinion (defective) | ||
| Bearing (worn) |
| Symptom | Suspected Area | See page |
|---|---|---|
| Oil leakage | Oil (level too high or wrong grade) | |
| Carrier oil seal (worn or damaged) | ||
| Companion flange (loose or damaged) | ||
| Noise in rear differential | Oil level (low or wrong grade) | |
| Ring gear or drive pinion (worn or chipped) | ||
| Backlash adjustment (defective) | ||
| Preload adjustment (defective) | ||
| Tooth contact between ring gear and drive pinion (defective) | ||
| Bearing (worn) | ||
| Differential lock does not lock | Harness and connector | |
| Transfer shift actuator | ||
| Transfer position switch | ||
| Differential lock switch | ||
| Differential lock shift actuator | ||
| CAN communication system | ||
| Four wheel drive control ECU | ||
| Rear Differential |