Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual: Rear Door Courtesy Switch Circuit
DESCRIPTION
HINT:
The rear door courtesy light switch is a collective term for the rear door courtesy light switch (for RH) and the rear door courtesy light switch (for LH).
The fold seat control ECU receives switch operation signals, the driving condition signal and rear door courtesy light switch assembly signal and operates the rear power seat according to these signals.
WIRING DIAGRAM
PROCEDURE
| 1. | INSPECT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY |
(a) Remove the rear door courtesy light switch assembly.
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(b) Inspect the rear door courtesy light switch assembly.
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| NG | .gif) | REPLACE REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY |
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| 2. | CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU - REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY) |
(a) for Rear RH Seat:
(1) Disconnect the x3 fold seat control ECU (rear RH seat) connector.
(2) Disconnect the R16 rear door courtesy light switch assembly (for RH) connector.
(b) for Rear LH Seat:
(1) Disconnect the y3 fold seat control ECU (rear LH seat) connector.
(2) Disconnect the S16 rear door courtesy light switch assembly (for LH) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
for Rear RH Seat
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| x3-18 (RCL) - R16-1 | Always | Below 1 Ω |
| x3-18 (RCL) or R16-1 - Body ground | Always | 10 kΩ or higher |
for Rear LH Seat
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| y3-18 (RCL) - S16-1 | Always | Below 1 Ω |
| y3-18 (RCL) or S16-1 - Body ground | Always | 10 kΩ or higher |
| OK | | GO TO PROBLEM SYMPTOMS TABLE |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
Park / Neutral Position Switch Circuit
DESCRIPTION The fold seat control ECU receives switch operation signals, the back door courtesy light switch assembly signal*1, rear door courtesy light switch assembly signal*2 and driving condition ...
Operation Check
OPERATION CHECK CHECK BASIC FUNCTION HINT: The rear power seat switch is a collective term for the rear power seat switch RH and the rear power seat switch LH. (a) Operate the rear power seat switch, ...
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
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