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.
| Symptom | Suspected Area | See page |
|---|---|---|
| Noise | Oil (level low) | |
| Oil (wrong) | ||
| Transfer (faulty) | ||
| Oil leakage | Oil (level too high) | |
| Gasket (damaged) | ||
| Oil seal (worn or damaged) | ||
| O-ring (worn or damaged) | ||
| Hard to shift or will not shift | Shifting key spring (damaged) | |
| Synchronizer spring (worn or damaged) | ||
| Shift from 2WD (H2) to 4WD (H4) impossible | Indicator switch (for 4WD position) | |
| A.D.D. actuator (w/ A.D.D.) | ||
| Wire harness | ||
| Skid control ECU with actuator (w/ ABS) | ||
| TCM (for A/T) (1KD-FTV) | ||
| ECM (for A/T) (1GR-FE) | ||
| 4WD control ECU | ||
| Shift from 4WD (H4) to 2WD (H2) impossible | Indicator switch (for 4WD position) | |
| A.D.D. actuator (w/ A.D.D.) | ||
| Wire harness | ||
| Skid control ECU with actuator (w/ ABS) | ||
| TCM (for A/T) (1KD-FTV) | ||
| ECM (for A/T) (1GR-FE) | ||
| 4WD control ECU | ||
| Shift from 4WD (H4) to 4WD (L4) impossible | Indicator switch (for 4WD position) | |
| Indicator switch (for L4 position) (M/T w/ ABS and A/T) | ||
| Indicator switch (neutral position) (for A/T) | ||
| A.D.D. actuator (w/ A.D.D.) | ||
| Wire harness | ||
| Skid control ECU with actuator (w/ ABS) | ||
| TCM (for A/T) (1KD-FTV) | ||
| ECM (for A/T) (1GR-FE) | ||
| Shift from 4WD (L4) to 4WD (H4) impossible | Indicator switch (for 4WD position) | |
| Indicator switch (for L4 position) (for M/T w/ ABS and A/T) | ||
| Indicator switch (neutral position) (for A/T) | ||
| A.D.D. actuator (w/ A.D.D.) | ||
| Wire harness | ||
| Skid control ECU with actuator (w/ ABS) | ||
| TCM (for A/T) (1KD-FTV) | ||
| ECM (for A/T) (1GR-FE) |