Lexus ES: Steering Wheel does not Heat Up When Heated Steering Wheel Switch is Pressed
DESCRIPTION
Click here .gif)
WIRING DIAGRAM
Click here
CAUTION / NOTICE / HINT
NOTICE:
The vehicle is equipped with a Supplemental Restraint System (SRS) which includes components such as airbags. Before servicing (including removal or installation of parts), be sure to read the precaution for Supplemental Restraint System.
Click here
PROCEDURE
| 1. | INSPECT STEERING WHEEL ASSEMBLY (THERMOSTAT, HEATER AND THERMISTOR) |
| (a) Disconnect the B heated steering wheel controller (steering vibration ECU) connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance (for F SPORT Models):
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| B-1 (SH1) - B-4 (SH3) | 20°C (68°F) | 2.52 to 3.00 Ω |
| B-1 (SH1) - B-5 (SH2) | 20°C (68°F) | 2.52 to 3.00 Ω |
| B-2 (TH1) - B-3 (TH2) | 10 to 30°C (50 to 86°F) | 4.228 to 8.701 kΩ |
Standard Resistance (except F SPORT Models):
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| B-1 (SH1) - B-4 (SH3) | 20°C (68°F) | 2.33 to 2.77 Ω |
| B-1 (SH1) - B-5 (SH2) | 20°C (68°F) | 2.33 to 2.77 Ω |
| B-2 (TH1) - B-3 (TH2) | 10 to 30°C (50 to 86°F) | 4.228 to 8.701 kΩ |
| OK | .gif) | REPLACE HEATED STEERING WHEEL CONTROLLER (STEERING VIBRATION ECU) |
| NG | | REPLACE STEERING WHEEL ASSEMBLY |
READ NEXT:
Precaution
PRECAUTION PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL NOTICE: When disconnecting the cable from the negative (-) auxiliary battery terminal, initialize the following s
Parts Location
PARTS LOCATION ILLUSTRATION *1 SPIRAL CABLE SUB-ASSEMBLY *2 STEERING WHEEL HEATER SWITCH (REFRESHING SEAT SWITCH) *3 INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - ECU-IG1 NO. 3 FUSE *4
SEE MORE:
Fail-safe Chart
FAIL-SAFE CHART PULSE FAILURE (a) If a pulse sensor built into the power window regulator motor assembly malfunctions, the following power window operations will be prohibited. Multiplex Network Master Switch Assembly, Power Window Regulator Switch Assembly, Rear Power Window Regulator Switch Assemb
A/F (O2) Sensor Positive Current Control Bank 1 Sensor 2 Circuit Short to Ground (P22AB11,P22AB12,P22AB13,P22AB16,P22AB17,P22B211,P22B212)
DESCRIPTION Refer to DTC P003612. Click here HINT: Although the DTC title say O2 sensor, these DTCs relate to the air fuel ratio sensor (sensor 2). DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note P22AB11 A/F (O2) Sensor Positive Current Control Bank
