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.
Inspect the fuses and relays related to this system before inspecting the suspected areas below.
| 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) | ||
| Switch from HIGH to LOW is impossible | Harness or connector | |
| Transfer shift actuator assembly | ||
| CAN communication system (for LHD with Entry and Start System) | ||
| CAN communication system (for LHD without Entry and Start System) | ||
| CAN communication system (for RHD with Entry and Start System) | ||
| CAN communication system (for RHD without Entry and Start System) | ||
| Transfer position switch (w/o Combination Switch) | ||
| Transfer position switch (w/ Combination Switch) | ||
| 4 wheel drive control ECU | ||
| Transfer faulty | ||
| Switch from LOW to HIGH is impossible | Harness or connector | |
| Transfer shift actuator assembly | ||
| CAN communication system (for LHD with Entry and Start System) | ||
| CAN communication system (for LHD without Entry and Start System) | ||
| CAN communication system (for RHD with Entry and Start System) | ||
| CAN communication system (for RHD without Entry and Start System) | ||
| Transfer position switch (w/o Combination Switch) | ||
| Transfer position switch (w/ Combination Switch) | ||
| 4 wheel drive control ECU | ||
| Transfer faulty | ||
| Switch from FREE to LOCK is impossible | Harness or connector | |
| Transfer shift actuator assembly | ||
| CAN communication system (for LHD with Entry and Start System) | ||
| CAN communication system (for LHD without Entry and Start System) | ||
| CAN communication system (for RHD with Entry and Start System) | ||
| CAN communication system (for RHD without Entry and Start System) | ||
| Transfer position switch (for 2TR-FE, 5L-E) | ||
| Center differential lock switch (w/o Combination Switch) | ||
| Center differential lock switch (w/ Combination Switch) | ||
| 4 wheel drive control ECU | ||
| Transfer faulty | ||
| Switch from LOCK to FREE is impossible | Harness or connector | |
| Transfer shift actuator assembly | ||
| CAN communication system (for LHD with Entry and Start System) | ||
| CAN communication system (for LHD without Entry and Start System) | ||
| CAN communication system (for RHD with Entry and Start System) | ||
| CAN communication system (for RHD without Entry and Start System) | ||
| Transfer position switch (for 2TR-FE, 5L-E) | ||
| Center differential lock switch (w/o Combination Switch) | ||
| Center differential lock switch (w/ Combination Switch) | ||
| 4 wheel drive control ECU | ||
| Transfer faulty | ||
| 4LO indicator light does not come on | Harness or connector | |
| Combination meter | ||
| CAN communication system (for LHD with Entry and Start System) | ||
| CAN communication system (for LHD without Entry and Start System) | ||
| CAN communication system (for RHD with Entry and Start System) | ||
| CAN communication system (for RHD without Entry and Start System) | ||
| 4 wheel drive control ECU | ||
| Transfer position switch (w/o Combination Switch) | ||
| Transfer position switch (w/ Combination Switch) | ||
| Transfer shift actuator assembly | ||
| 4LO indicator light remains on | 4 wheel drive control ECU | |
| Transfer position switch (w/o Combination Switch) | ||
| Transfer position switch (w/ Combination Switch) | ||
| Combination meter | ||
| Center differential lock indicator light does not come on | Harness or connector | |
| Combination meter | ||
| CAN communication system (for LHD with Entry and Start System) | ||
| CAN communication system (for LHD without Entry and Start System) | ||
| CAN communication system (for RHD with Entry and Start System) | ||
| CAN communication system (for RHD without Entry and Start System) | ||
| 4 wheel drive control ECU | ||
| Transfer position switch (for 2TR-FE, 5L-E) | ||
| Center differential lock switch (w/o Combination Switch) | ||
| Center differential lock switch (w/ Combination Switch) | ||
| Transfer shift actuator assembly | ||
| Center differential lock indicator light remains on (Blinking) | 4 wheel drive control ECU | |
| Transfer position switch (for 2TR-FE, 5L-E) | ||
| Center differential lock switch (w/o Combination Switch) | ||
| Center differential lock switch (w/ Combination Switch) | ||
| Combination meter |