Manual Up / Down Function does not Operate on Rear LH Only: Procedure

1. Disconnect the P38 regulator switch connector.
   Fig 1: Identifying P38 Regulator Switch Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Turn the ignition switch ON.
3. Check the voltage between the terminal 4 of the wire harness side connector and the body ground.

   Standard voltage

   Terminal No.	Condition	Specified Condition
   P38-4 (B) - Body ground	Ignition switch ON	10 to 14 V

NG → REPAIR OR REPLACE HARNESS AND CONNECTOR (REGULATOR SWITCH - POWER WINDOW RELAY) 

OK: Go to next step 

1. Remove the regulator switch.
   Fig 2: Identifying Power Window Regulator Switch Connectors

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Check the resistance between the switch terminals when the switch is operated, as shown in the table below.

   Standard resistance

   Terminal No.	Regulator Switch	Specified Condition
   1 - 2, 3 - 4	UP	Below 1 Ω
   1 - 2, 3 - 5	OFF
   1 - 4, 3 - 5	DOWN

NG → REPLACE POWER WINDOW REGULATOR SWITCH (REAR LH) 

OK: Go to next step 

1. Disconnect the P42 motor connector.
   Fig 3: Identifying P38 Regulator Switch & P42 Regulator Motor Connector Termals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Check the resistance between the wire harness side connectors.

   Standard resistance

   Terminal No.	Specified Condition
   P38-1 (D) - P42-2	Below 1 Ω
   P38-3 (U) - P42-1

3. Check the resistance between the P38 regulator switch connector and body ground.

   Standard resistance

   Terminal No.	Specified Condition
   P38-1 (D) - Body ground	10 kΩ or higher
   P38-3 (U) - Body ground

NG → REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: Go to next step 

1. Remove the motor.
   Fig 4: Identifying Power Window Regulator Motor Assembly & Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Apply battery voltage to connector terminals 1 and 2.
3. Check that the motor smoothly rotates.
   NOTE:

   Do not apply battery voltage to any terminals except terminals 1 and 2.

   Standard

   Terminal No.	Specified Condition
   Battery positive (+) → 1 Battery negative (-) → 2	Motor gear rotates clockwise
   Battery positive (+) → 2 Battery negative (-) → 1	Motor gear rotates counterclockwise

NG → REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (REAR LH) 

OK → REPAIR OR REPLACE HARNESS AND CONNECTOR (MASTER SWITCH - REGULATOR SWITCH)