Problem Symptoms Table
WARNING: This page is about a different car, the 2008 Lexus LS 600hL. However, it is still accessible from the selected car via links, so may be relevant.
HINT:
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
Variable gear ratio steering system
PROBLEM SYMPTOMS CHART
| Symptom | Suspected Area | See |
|---|---|---|
| Steering wheel is off-center | Steering wheel is off-center or deviates from neutral position | STEERING WHEEL IS OFF-CENTER OR DEVIATES FROM NEUTRAL POSITION |
| VGRS system stops or does not operate | Only if the following are all normal and the problem is still occurring, replace the steering control ECU | STEERING CONTROL ECU |
| Actuator temperature is abnormal | VGRS SYSTEM STOPS OR DOES NOT OPERATE | |
| IG power source circuit | DTC C15C6/77 IG POWER SUPPLY VOLTAGE MALFUNCTION | |
| IG or PIG power supply circuit | DTC C15C7/78 DC MOTOR POWER SOURCE VOLTAGE MALFUNCTION; DTC C15C8/79 POWER SUPPLY RELAY FAILURE | |
| Power steering system (check steering effort) | HOW TO PROCEED WITH TROUBLESHOOTING | |
| Steering angle differs between left and right | Steering angle differs between left and right | STEERING ANGLE DIFFERS BETWEEN LEFT AND RIGHT |
| Steering wheel vibrates or abnormal noise is heard from steering wheel | Steering wheel vibrates or abnormal noise is heard from steering wheel | STEERING WHEEL VIBRATES OR ABNORMAL NOISE IS HEARD FROM STEERING WHEEL |
| Master warning light (VGRS) malfunction | Master warning light circuit | MASTER WARNING LIGHT MALFUNCTION |