Lexus ES: Steering Pad Switch Circuit
DESCRIPTION
The forward recognition camera receives LTA main switch signals from the steering pad switch assembly.
WIRING DIAGRAM
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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.
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PROCEDURE
| 1. | INSPECT STEERING PAD SWITCH ASSEMBLY |
(a) Remove the steering pad switch assembly.
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(b) Inspect the steering pad switch assembly.
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| NG | .gif) | REPLACE STEERING PAD SWITCH ASSEMBLY |
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| 2. | INSPECT SPIRAL CABLE SUB-ASSEMBLY |
(a) Remove the spiral cable sub-assembly.
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(b) Inspect the spiral cable sub-assembly.
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| NG | | REPLACE SPIRAL CABLE SUB-ASSEMBLY |
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| 3. | CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - FORWARD RECOGNITION CAMERA) |
(a) Disconnect the G20 spiral cable sub-assembly connector.
(b) Disconnect the P5 forward recognition camera connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| G20-6 (DIST) - P5-3 (LKSW) | Always | Below 1 Ω |
| G20-6 (DIST) or P5-3 (LKSW) - Body ground | Always | 10 kΩ or higher |
(d) Connect the P5 forward recognition camera connector.
(e) Connect the G20 spiral cable sub-assembly connector.
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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| 4. | CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - BODY GROUND) |
(a) Disconnect the G20 spiral cable sub-assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| G20-2 (ECC) - Body ground | Always | Below 1 Ω |
(c) Connect the G20 spiral cable sub-assembly connector.
| OK | | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
READ NEXT:
Indicator Circuit
DESCRIPTION The forward recognition camera sends indicator illumination request signals to the combination meter assembly via CAN communication. CAUTION / NOTICE / HINT NOTICE:
When replacing the f
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SEE MORE:
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 suspect
Stop Light Control Relay Malfunction (C1380)
DESCRIPTION When any of the following conditions are met, the skid control ECU (brake booster with master cylinder assembly) sets the drive output (STPO) ON which operates the stop light control relay (stop light switch assembly) and turns on the stop lights. Illumination Conditions:
Pre-collisio
