Problem Symptoms Table
HINT:
- 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.
Touch Select 2-4 and High-Low System
PROBLEM SYMPTOMS CHART
| Symptom | Suspected Area | Reference |
|---|---|---|
| Switch from 2WD (H2) to 4WD HIGH (H4F) impossible | Harness or connector | FAIL-SAFE CHART |
| Transfer shift actuator | TERMINALS OF ECU | |
| A.D.D. actuator | 4WD CONTROL SWITCH | |
| CAN communication system | HOW TO PROCEED WITH TROUBLESHOOTING | |
| 4WD control switch | 4WD CONTROL SWITCH | |
| 4WD control ECU | PROBLEM SYMPTOMS TABLE | |
| Transfer assembly | TRANSFER ASSEMBLY | |
| Switch from 4WD HIGH (H4F) to 2WD (H2) impossible | Harness or connector | FAIL-SAFE CHART |
| Transfer shift actuator | TERMINALS OF ECU | |
| A.D.D. actuator | 4WD CONTROL SWITCH | |
| CAN communication system | HOW TO PROCEED WITH TROUBLESHOOTING | |
| 4WD control switch | 4WD CONTROL SWITCH | |
| 4WD control ECU | PROBLEM SYMPTOMS TABLE | |
| Transfer assembly | TRANSFER ASSEMBLY | |
| Switch from 4WD HIGH (H4F) to 4WD LOW (L4F) impossible | Harness or connector | FAIL-SAFE CHART |
| Transfer shift actuator | 4WD CONTROL SWITCH | |
| CAN communication system | HOW TO PROCEED WITH TROUBLESHOOTING | |
| 4WD control switch | 4WD CONTROL SWITCH | |
| 4WD control ECU | PROBLEM SYMPTOMS TABLE | |
| Transfer assembly | TRANSFER ASSEMBLY | |
| Switch from 4WD LOW (L4F) to 4WD HIGH (H4F) impossible | Harness or connector | FAIL-SAFE CHART |
| Transfer shift actuator | 4WD CONTROL SWITCH | |
| CAN communication system | HOW TO PROCEED WITH TROUBLESHOOTING | |
| 4WD control switch | 4WD CONTROL SWITCH | |
| 4WD control ECU | PROBLEM SYMPTOMS TABLE | |
| Transfer assembly | TRANSFER ASSEMBLY | |
| Switch from 4WD HIGH (H4F) to 4WD HIGH (H4L) impossible | Harness or connector | FAIL-SAFE CHART |
| Transfer shift actuator | TERMINALS OF ECU | |
| CAN communication system | HOW TO PROCEED WITH TROUBLESHOOTING | |
| Center differential lock switch | CENTER DIFFERENTIAL LOCK SWITCH | |
| 4WD control ECU | PROBLEM SYMPTOMS TABLE | |
| Transfer assembly | TRANSFER ASSEMBLY | |
| Switch from 4WD HIGH (H4L) to 4WD HIGH (H4F) impossible | Harness or connector | FAIL-SAFE CHART |
| Transfer shift actuator | TERMINALS OF ECU | |
| CAN communication system | HOW TO PROCEED WITH TROUBLESHOOTING | |
| Center differential lock switch | CENTER DIFFERENTIAL LOCK SWITCH | |
| 4WD control ECU | PROBLEM SYMPTOMS TABLE | |
| Transfer assembly | TRANSFER ASSEMBLY | |
| Switch from 4WD LOW (L4F) to 4WD LOW (L4L) impossible | Harness or connector | FAIL-SAFE CHART |
| Transfer shift actuator | TERMINALS OF ECU | |
| CAN communication system | HOW TO PROCEED WITH TROUBLESHOOTING | |
| Center differential lock switch | CENTER DIFFERENTIAL LOCK SWITCH | |
| 4WD control ECU | PROBLEM SYMPTOMS TABLE | |
| Transfer assembly | TRANSFER ASSEMBLY | |
| Switch from 4WD LOW (L4L) to 4WD LOW (L4F) impossible | Harness or connector | FAIL-SAFE CHART |
| Transfer shift actuator | TERMINALS OF ECU | |
| CAN communication system | HOW TO PROCEED WITH TROUBLESHOOTING | |
| Center differential lock switch | CENTER DIFFERENTIAL LOCK SWITCH | |
| 4WD control ECU | PROBLEM SYMPTOMS TABLE | |
| Transfer assembly | TRANSFER ASSEMBLY | |
| 4HI indicator light does not come on | Harness or connector | FAIL-SAFE CHART |
| 4WD fuse | 4WD CONTROL SWITCH | |
| Combination meter | HOW TO PROCEED WITH TROUBLESHOOTING | |
| CAN communication system | HOW TO PROCEED WITH TROUBLESHOOTING | |
| 4WD control switch | 4WD CONTROL SWITCH | |
| 4WD control ECU | PROBLEM SYMPTOMS TABLE | |
| 4HI indicator light remains on | 4WD control switch | 4WD CONTROL SWITCH |
| 4WD control ECU | PROBLEM SYMPTOMS TABLE | |
| Combination meter | HOW TO PROCEED WITH TROUBLESHOOTING | |
| 4LO indicator light does not come on | Harness or connector | FAIL-SAFE CHART |
| 4WD fuse | 4WD CONTROL SWITCH | |
| Combination meter | HOW TO PROCEED WITH TROUBLESHOOTING | |
| CAN communication system | HOW TO PROCEED WITH TROUBLESHOOTING | |
| 4WD control switch | 4WD CONTROL SWITCH | |
| 4WD control ECU | PROBLEM SYMPTOMS TABLE | |
| Combination meter | HOW TO PROCEED WITH TROUBLESHOOTING | |
| 4HI indicator light remains on | 4WD control switch | 4WD CONTROL SWITCH |
| 4WD control ECU | PROBLEM SYMPTOMS TABLE | |
| Combination meter | HOW TO PROCEED WITH TROUBLESHOOTING | |
| CENTER DIFF. indicator light does not come on | Harness or connector | FAIL-SAFE CHART |
| 4WD fuse | 4WD CONTROL SWITCH | |
| Combination meter | HOW TO PROCEED WITH TROUBLESHOOTING | |
| CAN communication system | HOW TO PROCEED WITH TROUBLESHOOTING | |
| Center differential lock switch | CENTER DIFFERENTIAL LOCK SWITCH | |
| 4WD control ECU | PROBLEM SYMPTOMS TABLE | |
| Combination meter | HOW TO PROCEED WITH TROUBLESHOOTING | |
| CENTER DIFF. light remains on | Center differential lock switch | CENTER DIFFERENTIAL LOCK SWITCH |
| 4WD control ECU | PROBLEM SYMPTOMS TABLE | |
| Combination meter | HOW TO PROCEED WITH TROUBLESHOOTING |