DESCRIPTION
Signals are input into the position control ECU and switch assembly LH. The built-in ECU manages the signals received from the power seat switch, and operates each motor. If the position control ECU and switch assembly LH receives more than 2 motor operation signals for the same motor, the motor will be stopped. Manual operation is restarted when the position control ECU and switch assembly LH receives 1 signal only.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following procedure.
PROCEDURE
1. | CHECK FRONT POWER SEAT OPERATION |
(a) Check that each function of the power seat operates normally by using the position control ECU and switch assembly LH.
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Result | Proceed to |
---|---|
All power seat functions do not operate | A |
One or more power seat functions do not operate | B |
B | GO TO OTHER DIAGNOSIS PROCEDURE (One or more Power Seat Motors do not Operate) |
|
2. | CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU AND SWITCH ASSEMBLY LH - POWER SUPPLY) |
(a) Disconnect the c5 and c6 position control ECU and switch assembly LH connectors.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection | Condition | Specified Condition |
---|---|---|
c5-7 (+B) - Body ground | Always | 11 to 14 V |
c6-3 (IG) - Body ground | Engine switch on (IG) | 11 to 14 V |
c6-3 (IG) - Body ground | Engine switch off | Below 1 V |
NG | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
3. | CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU AND SWITCH ASSEMBLY LH - BODY GROUND) |
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
c5-2 (GND) - Body ground | Always | Below 1 Ω |
OK | REPLACE POSITION CONTROL ECU AND SWITCH ASSEMBLY LH |
NG | REPAIR OR REPLACE HARNESS OR CONNECTOR |
Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual > Front Seat Assembly: Installation
INSTALLATION CAUTION / NOTICE / HINT CAUTION:
Be sure to read Precaution thoroughly before servicing.
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Wear protective gloves. Sharp areas on the parts may injure your hands.
HINT:
Use the same procedure for the RH side and LH side.
The following procedure is for the LH sid ...
Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual > Roof Headlining (w/ Rear No. 2 Seat): Installation
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