Problem Symptoms Table
HINT:
If a normal system code is displayed during the DTC check but the problem still occurs, check the circuits for each problem symptom in the order given in the table below and proceed to the relevant troubleshooting article.
FOUR WHEEL DRIVE CONTROL SYSTEM
PROBLEM SYMPTOMS CHART
| Symptom | Suspected Area | See |
|---|---|---|
| Phenomenon of tight-corner braking* | 1. Steering angle sensor circuit | DTC C1297/97 STEERING ANGLE SENSOR |
| 2. Transfer control solenoid circuit | DTC C1298/98 LINEAR SOLENOID CIRCUIT | |
| 3. 4WD control ECU | 4WD CONTROL ECU | |
| 4. Transfer assembly | TRANSFER ASSEMBLY | |
| 4WD warning remains on (Multi-information display) | 1. CAN communication system | HOW TO PROCEED WITH TROUBLESHOOTING |
| 2. Multiplex communication system | HOW TO PROCEED WITH TROUBLESHOOTING | |
| 3. 4WD control system | HOW TO PROCEED WITH TROUBLESHOOTING | |
| 4. 4WD control system power source circuit | DTC C1241/94 LOW POWER SUPPLY VOLTAGE | |
| 5. Brake control system | HOW TO PROCEED WITH TROUBLESHOOTING | |
| 6. Combination meter system | HOW TO PROCEED WITH TROUBLESHOOTING | |
| 7. 4WD control ECU | 4WD CONTROL ECU | |
| 8. Combination meter | REMOVAL | |
| 4WD warning does not come on (Multi-information display) | 1. CAN communication system | HOW TO PROCEED WITH TROUBLESHOOTING |
| 2. Multiplex communication system | HOW TO PROCEED WITH TROUBLESHOOTING | |
| 3. Combination meter | REMOVAL | |
| 4. 4WD control ECU | 4WD CONTROL ECU | |
| The system is in the DTC output mode although terminals TC and CG of the DLC3 are not shorted | 1. TC and CG terminal circuit | TC AND CG TERMINAL CIRCUIT |
| 2. 4WD control ECU | 4WD CONTROL ECU | |
| The system is not in the DTC output mode although terminals TC and CG of the DLC3 are shorted | 1. TC and CG terminal circuit | TC AND CG TERMINAL CIRCUIT |
| 2. 4WD control ECU | 4WD CONTROL ECU | |
| HINT: * Phenomenon of tight-corner braking |
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When driving in 4-wheel drive mode, the vehicle is hard to turn, as if the brakes were applied, due to the rotational difference between the front and rear tires while turning.