Lexus ES: Problem Symptoms Table
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.
| Symptom | Suspected Area | Link |
|---|---|---|
| Electric parking brake does not operate | Proceed to "Electric Parking Brake does not Operate" | |
| Parking brake indicator light does not illuminate (red) or turn off when parking brake is manually engaged and disengaged | Proceed to "Electric Parking Brake does not Operate" | |
| Electric parking brake AUTO function (shift-linked function) does not operate (shift-linked parking brake does not lock or release) | Proceed to "Electric Parking Brake AUTO Function Circuit" | |
| Message not displayed on multi-information display when AUTO function set to ON/OFF | Proceed to "Message Not Displayed on Multi-information Display When AUTO Function Set to ON/OFF" | |
| Brake warning light (Yellow) remains on | Proceed to "Brake Warning Light (Yellow) Remains On" | |
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System Diagram
SYSTEM DIAGRAM
Terminals Of Ecu
TERMINALS OF ECU CHECK SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) *a Front view of wire harness connector (to Skid Control ECU (Brake Actuator Assembly)) - - (a) Disconnect the A40 skid c
Test Mode Procedure
TEST MODE PROCEDURE REAR BRAKE PAD REPLACEMENT MODE *1 Rear Disc Brake Piston *2 Nut *a The nut moves inward in pad replacement mode HINT: When replacing the rear disc brake pad a
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Problem Symptoms Table
PROBLEM SYMPTOMS TABLE NOTICE: Before replacing the main body ECU (multiplex network body ECU), refer to Registration. Click here 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 i
Engine Coolant Bypass Valve Circuit Short to Ground (P268111,P268115)
DESCRIPTION The flow shutting valve (for heater control) used for the variable cooling system is a magnet type valve that is closed when the engine is warming up to prevent coolant from flowing through the heater passage which reduces engine warm up time. DTC No. Detection Item DTC Detection
