Lexus ES: Steering Pad Switch Circuit
DESCRIPTION
The forward recognition camera receives LTA main switch signals from the steering pad switch assembly.
WIRING DIAGRAM
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 |
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Precaution
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