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.
Heated Steering Wheel System| Symptom | Suspected Area | Link |
|---|---|---|
| Steering wheel does not heat up when heated steering wheel switch is pressed | Navigation system | |
| Steering Wheel Heater Switch (Refreshing Seat Switch) | | |
| Refer to "Steering wheel does not heat up when heated steering wheel switch is pressed" | | |
| Automatic steering wheel heater does not turn on | Check automatic steering wheel heater settings | - |
| Navigation system | | |
| Air Conditioning Amplifier Assembly | | |
| Steering Wheel Heater Switch (Refreshing Seat Switch) | |
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Terminals Of Ecu
TERMINALS OF ECU HEATED STEERING WHEEL CONTROLLER (STEERING VIBRATION ECU) (a) Measure the voltage or resistance according to the value(s) in the table below. HINT: Perform the inspection from the ha
Dtc Check / Clear
DTC CHECK / CLEAR CHECK DTC (a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Body Electrical / Air Conditioner / Tr
Fail-safe Chart
FAIL-SAFE CHART DIAGNOSIS FUNCTION
Heated steering wheel controller (steering vibration ECU) has diagnosis function. Condition Detection Condition Response when malfunction detected Recove
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Installation
INSTALLATION PROCEDURE 1. TEMPORARILY INSTALL FUEL PUMP ASSEMBLY (a) Turn the crankshaft pulley until the flat of the camshaft faces the fuel pump lifter assembly. HINT: This prevents the camshaft nose from pushing up the fuel pump lifter assembly when installing the fuel pump assembly.
Motor/Generator Shutdown Signal Stuck Off (P321E9F)
DTC SUMMARY MALFUNCTION DESCRIPTION The hybrid vehicle control ECU detects malfunctions which prevent the inverter with converter assembly emergency shutdown circuit (HSDN) from shutting down the hybrid control system. Detection is performed when the power switch is turned on (IG) and during the shu
