Lexus ES: Fail-safe Chart
Lexus ES (XZ10) Service Manual / Steering / Power Assist Systems / Power Steering System(for Gasoline Model) / Fail-safe Chart
FAIL-SAFE CHART
If a problem occurs in the power steering system, the power steering assist will be stopped or the amount of power assist will be decreased to protect the system.
Power Steering System| Malfunction | Fail-safe Operation | EPS warning light | Buzzer |
|---|---|---|---|
| Power steering assist stops or assist amount is limited | Red or yellow | Sounds intermittently or once |
| Power steering assist is temporarily limited | Yellow | Sounds once |
HINT:
- If the power steering assist stops, the EPS warning light comes on (red).
- If the amount of power assist is reduced, the EPS warning light comes on (yellow) and a vibration or sound may occur.
- The amount of power assist may be decreased to prevent the motor and ECUs from overheating if the steering wheel is continuously turned when the vehicle is either stopped or driven at a low speed, or if the steering wheel is kept at either full lock position for a long time. In such cases, the amount of power assist returns to normal if the steering wheel is not turned for approximately 10 minutes with the engine running.
- If the battery is not sufficiently charged or the voltage decreases temporarily, the amount of power assist will be reduced and the EPS warning light will come on. In such cases, the amount of power assist returns to normal when the battery voltage recovers.
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Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART Power Steering System DTC No. Detection Item DTC Detection Condition Warning Indicate Return-to-normal Condition Note Link C1511 Torque Sensor1 Tor
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART Power Steering System DTC No. Detection Item DTC Detection Condition Warning Indicate Return-to-normal Condition Note Link C1511 Torque Sensor1 Tor
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How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT:
Use the following procedure to troubleshoot the power mirror control system (w/o Memory).
*: Use the Techstream.
PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP
NEXT 2. CUSTOMER PROBLEM ANALYSIS HINT:
In troubleshooting, confirm th
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