Problem Symptoms Table
WARNING: This page is about a different car, the 2006 Lexus RX 400h. However, it is still accessible from the selected car via links, so may be relevant.
HINT:
- If there is no DTC output but the problem still occurs, check the circuits for each problem symptom in the order given in the table below and proceed to relevant troubleshooting page.
- Inspect the fuse before inspecting the circuits shown in the chart below.
- Inspect each malfunctioning circuit in numerical order for the corresponding symptoms.
AXLE CONTROL SYSTEM
PROBLEM SYMPTOMS
| Symptom | Suspected area | See |
|---|---|---|
| "CHECK AWD SYSTEM" is displayed | 1. Check DTC again and make sure that the DTC is not output | DTC CHECK / CLEAR |
| 2. CAN communication system | HOW TO PROCEED WITH TROUBLESHOOTING | |
| 3. Multiplex communication system | HOW TO PROCEED WITH TROUBLESHOOTING | |
| 4. Hybrid control system | HOW TO PROCEED WITH TROUBLESHOOTING | |
| 5. Brake control system | HOW TO PROCEED WITH TROUBLESHOOTING | |
| 6. AWD warning circuit | AWD Warning Remains ON | |
| 7. SKID CONTROL ECU | ||
| 8. HV control ECU | HYBRID VEHICLE CONTROL ECU |
HINT:
Use the table below to help find the cause of the problem.
Check each part. If necessary, replace these parts.
AXLE SYSTEM
PROBLEM SYMPTOMS
| Symptom | Suspected area | See |
|---|---|---|
| Wander | 1. Wheel alignment (Front) | FRONT WHEEL ALIGNMENT |
| 2. Wheel alignment (Rear) | REAR WHEEL ALIGNMENT | |
| 3. Steering linkage | INSPECTION | |
| 4. Hub bearing (Font) | FRONT AXLE HUB | |
| 5. Hub bearing (Rear) | REAR AXLE CARRIER | |
| 6. Stabilizer bar (Front) | REMOVAL | |
| 7. Stabilizer bar (Rear (2WD)) | REMOVAL | |
| 8. Stabilizer bar (Rear (4WD)) | REMOVAL | |
| Wheel shimmy | 1. Wheel balance | HOW TO PROCEED WITH TROUBLESHOOTING |
| 2. Shock absorber (Front) | INSPECTION | |
| 3. Shock absorber (Rear) | INSPECTION | |
| 4. Hub bearing (Front) | FRONT AXLE HUB | |
| 5. Hub bearing (Rear) | REAR AXLE CARRIER |