LEXUS LS430 2003 Factory Repair Manual

Fig. 80: Inspecting Front Door Lock Assy LH (Position Switch)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
NG: REPLACE REAR DOOR LOCK ASSY LH

OK: Go to Next Step.
3.INSPECT REAR DOOR LOCK ASSY LH (DOOR CLOSER MOTOR)
a. Disconnect the R36 ECU connector.
b. Apply battery voltage and check operation of the door closer link.
SPECIFIED CONDITION
Measurement connection

Specified Condition
Battery positive (+) --> Terminal 5 Battery negative (-) -
-> Terminal 6Moves to FULL
Battery positive (+) --> Terminal 6 Battery negative (-) -
-> Terminal 5Moves to INITIAL

Fig. 81: Inspecting Rear Door Lock Assy LH (Door Closer Motor)

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
NG: REPLACE REAR DOOR LOCK ASSY LH
OK: REPLACE REAR DOOR ECU LH
CIRCUIT DESCRIPTION
The door lock assembly has a built-in door closer motor.
The door ECU actuates the door closer motor to fully close the door.
WIRING DIAGRAM
Fig. 82: Door Closer Motor Circuit On Rear Right Side Door
- Wiring Diagram
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
INSPECTION PROCEDURE
1.INSPECT REAR DOOR LOCK ASSY RH (DOOR LOCK MOTOR)
a. Disconnect the R37 ECU connector.
b. Apply battery voltage to the door lock and check operation of the door lock motor.

SPECIFIED CONDITION
Measurement ConditionSpecified Condition
Battery positive (+) --> Terminal 2 Battery negative (-) -->
Terminal 1Moves to LOCK
Battery positive (+) --> Terminal 1 Battery negative (-) -->
Terminal 2Moves to UNLOCK

Fig. 83: Inspecting Rear Door Lock Assy RH (Door Lock Motor)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
NG: REPLACE REAR DOOR LOCK ASSY RH

OK: Go to Next Step.
2.INSPECT REAR DOOR LOCK ASSY RH (POSITION SWITCH)
a. Disconnect the R37 ECU connector.
b. Measure the resistance of the position switch.
TERMINALS RESISTANCE REFERENCE
Tester ConnectionDoor Lock ConditionSpecified Condition
R37-7 (LSW) - R37-20 (CPSE)LOCK10 kohms or higher
R37-7 (LSW) - R37-20 (CPSE)UNLOCKBelow 1 ohms

Fig. 84: Inspecting Front Door Lock Assy RH (Position Switch)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
NG: REPLACE REAR DOOR LOCK ASSY RH

OK: Go to Next Step.
3.INSPECT REAR DOOR LOCK ASSY RH (DOOR CLOSER MOTOR)
a. Disconnect the R37 ECU connector.
b. Apply battery voltage and check operation of the door closer link.
SPECIFIED CONDITION
Measurement connectionSpecified Condition
Battery positive (+) --> Terminal 5 Battery negative (-) -->
Terminal 6Moves to FULL
Battery positive (+) --> Terminal 6 Battery negative (-) -->
Terminal 5Moves to INITIAL

Fig. 85: Inspecting Rear Door Lock Assy RH (Door Closer Motor)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.