Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual: Reclining Motor Circuit
DESCRIPTION
HINT:
- The rear power seat switch is a collective term for the rear power seat switch RH and the rear power seat switch LH.
- The rear seatback frame sub-assembly is a collective term for the rear seatback frame sub-assembly RH and the rear seatback frame sub-assembly LH.
The fold seat control ECU receives switch operation signals from the rear power seat switch and operates the reclining motor according to the received signal. While the reclining motor is operating, the Hall IC built into the fold motor detects the position of the seatback and sends a fold motor position sensor signal to the fold seat control ECU. The fold seat control ECU uses the Hall IC to detect if abnormalities, such as if the rear seatback is jammed.
WIRING DIAGRAM
PROCEDURE
| 1. | INSPECT REAR SEATBACK FRAME SUB-ASSEMBLY (RECLINING MOTOR) |
(a) Remove the rear seatback frame sub-assembly.
-
for Rear LH Seat: Click here
.gif)
-
for Rear RH Seat: Click here
(b) Inspect the rear seatback frame sub-assembly (reclining motor).
-
for Rear LH Seat: Click here
-
for Rear RH Seat: Click here
| NG | .gif) | REPLACE REAR SEATBACK FRAME SUB-ASSEMBLY |
|
.gif)
| 2. | CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU - RECLINING MOTOR) |
(a) Disconnect the x4*1 or y4*2 fold seat control ECU (rear RH seat) connector.
- *1: for Rear RH Seat
- *2: for Rear LH Seat
(b) Disconnect the x1*1 or y2*2 reclining motor connector.
- *1: for Rear RH Seat
- *2: for Rear LH Seat
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
for Rear RH Seat
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| x4-3 (RCL+) - x1-1 | Always | Below 1 Ω |
| x4-3 (RCL+) or x1-1 - Body ground | Always | 10 kΩ or higher |
| x4-7 (RCL-) - x1-2 | Always | Below 1 Ω |
| x4-7 (RCL-) or x1-2 - Body ground | Always | 10 kΩ or higher |
for Rear LH Seat
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| y4-3 (RCL+) - y2-1 | Always | Below 1 Ω |
| y4-3 (RCL+) or y2-1 - Body ground | Always | 10 kΩ or higher |
| y4-7 (RCL-) - y2-2 | Always | Below 1 Ω |
| y4-7 (RCL-) or y2-2 - Body ground | Always | 10 kΩ or higher |
| OK | | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
Folding Motor Circuit
DESCRIPTION HINT:
The rear power seat switch is a collective term for the rear power seat switch RH and the rear power seat switch LH.
The rear seatback frame sub-assembly is a collective term fo ...
Rear Power Seat Switch Circuit
DESCRIPTION HINT: The rear power seat switch is a collective term for the rear power seat switch RH and the rear power seat switch LH. When the rear power seat switch is operated, a recline signal is ...
Other materials:
Lexus RX (RX 350L, RX450h) 2016-2024 Owners Manual > Using the driving support
systems: BSM (Blind Spot Monitor)
Summary of the Blind Spot Monitor
The Blind Spot Monitor is a system that has 2 functions:
The BSM (Blind Spot Monitor) function
Assists the driver in making a decision when changing lanes
The RCTA (Rear Cross Traffic Alert) function
Assists the driver when backing up
These functions u ...
Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual > Power Tilt And Power Telescopic Steering Column System: Customize Parameters
CUSTOMIZE PARAMETERS CUSTOMIZE POWER TILT AND POWER TELESCOPIC STEERING COLUMN SYSTEM HINT: The following items can be customized. NOTICE:
When the customer requests a change in a function, first make sure that the function can be customized.
Record the current settings before customizing.
( ...
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
- For your information
- Pictorial index
- For safety and security
- Instrument cluster
- Operation of each component
- Driving
- Lexus Display Audio system
- Interior features
- Maintenance and care
- When trouble arises
- Vehicle specifications
- For owners
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
0.0191