Problem Symptoms Table
WARNING: This page is about a different car, the 2008 Toyota FJ Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
Use the table below to help determine the cause of the problem symptom. 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.
Differential system
DIFFERENTIAL SYSTEM - PROBLEM SYMPTOMS CHART
| Symptom | Suspected Area | See |
|---|---|---|
| Oil leak from front differential | 1. Oil (level too high or wrong grade) | DIFFERENTIAL OIL |
| 2. Front differential side oil seal (worn or damaged) | FRONT DIFFERENTIAL CARRIER ASSEMBLY | |
| 3. Front differential rear oil seal (worn or damaged) | FRONT DIFFERENTIAL CARRIER ASSEMBLY | |
| 4. Companion flange (loose or damaged) | FRONT DIFFERENTIAL CARRIER ASSEMBLY | |
| Oil leak from rear differential | 1. Oil (level too high or wrong grade) | DIFFERENTIAL OIL |
| 2. Rear differential front oil seal (worn or damaged) | REAR DIFFERENTIAL CARRIER OIL SEAL | |
| 3. Companion flange (loose or damaged) | REAR DIFFERENTIAL CARRIER ASSEMBLY | |
| Oil leak from front drive pinion shaft | 1. Oil (level too high or wrong grade) | DIFFERENTIAL OIL |
| 2. Front differential side oil seal (worn or damaged) | FRONT DIFFERENTIAL SIDE GEAR SHAFT OIL SEAL | |
| 3. Front differential rear oil seal (worn or damaged) | FRONT DIFFERENTIAL CARRIER OIL SEAL | |
| 4. Companion flange (loose or damaged) | FRONT DIFFERENTIAL CARRIER ASSEMBLY | |
| Oil leak from rear drive pinion shaft | 1. Oil (level too high or wrong grade) | DIFFERENTIAL OIL |
| 2. Rear differential front oil seal (worn or damaged) | REAR DIFFERENTIAL CARRIER OIL SEAL | |
| 3. Companion flange (loose or damaged) | REAR DIFFERENTIAL CARRIER ASSEMBLY | |
| Differential lock does not operate | 1. Differential lock switch | DIFFERENTIAL LOCK SYSTEM |
| 2. Rear differential lock actuator | DIFFERENTIAL LOCK SYSTEM | |
| 3. Four wheel drive control ECU | DIFFERENTIAL LOCK SYSTEM | |
| 4. Differential carrier (Faulty) | - | |
| 5. Wiring or ground (Faulty) | - |