2003 LEXUS LS430 Factory Repair Manual

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LEXUS LS430 2003  Factory Repair Manual Fig. 38: Door Closer Motor Malfunction On Rear Left Side Door - Description Chart 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
WIRING DIAGRAM 
Fig. 39: Door Closer Motor Malfunction On Rear Left Sid

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LEXUS LS430 2003  Factory Repair Manual OK: "ON" (cam position switch 1 to 3 is ON) appears on the screen.  
NG: Go to step 2  
OK: REPLACE REAR DOOR ECU LH  
2.CHECK REAR DOOR LOCK ASSY LH (CAM POSITION SWITCH) 
a. Measure the swit

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LEXUS LS430 2003  Factory Repair Manual Fig. 41: Checking Rear Door Lock Assy LH (Cam Position Switch) 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
Refer to the system description for the ON/OFF patterns of the cam position switch (SEE SY

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LEXUS LS430 2003  Factory Repair Manual Fig. 42: Driver Door ECU Power Source Circuit - Wiring Diagram 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
INSPECTION PROCEDURE 
1.INSPECT FUSE (MPX-IG, AM1, D DOOR, MPX-B1, D/C CUT) 
a. Remove the

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LEXUS LS430 2003  Factory Repair Manual NG: REPLACE FUSE  
OK: Go to Next Step.  
2.INSPECT RELAY (Marking: D-IG1) 
a. Remove the D-IG1 relay from the driver side J/B.  
b. Measure the resistance.  
TERMINALS RESISTANCE REFERENCE 
Fig. 43:

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LEXUS LS430 2003  Factory Repair Manual b. Measure the voltage and resistance of the wire harness side connector.  
Fig. 44: Checking Wire Harness (Driver Door ECU 
- Body Ground) 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
TERMINALS VOL

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LEXUS LS430 2003  Factory Repair Manual This circuit supplies power to operate the passenger door ECU.
WIRING DIAGRAM 
Fig. 45: Passenger Door ECU Power Source Circuit 
- Wiring Diagram 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
INSPECT

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LEXUS LS430 2003  Factory Repair Manual 1.INSPECT FUSE (MPX-IG, AM1, P DOOR, MPX-B1, D/C CUT) 
a. Remove the MPX-IG and AM1 fuses from the driver side J/B.  
b. Remove the P DOOR and MPX-B1 fuses from the passenger side J/B.  
c. Remove the