Inspection Procedure

1. Disconnect the P38 regulator switch connector.
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 

   VOLTAGE SPECIFICATION
   
   

   Terminal No.	Condition	Specified Condition
   P38-3 (B) - Body ground	Ignition switch ON	10 to 14 V

Fig 1: Identifying P38 Regulator Switch Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

OK: Go to next step. 

1. Remove the regulator switch.
2. Check the resistance between the switch terminals when the switch is operated, as shown in the table below.

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

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

Fig 2: Identifying Power Window Regulator Switch Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE POWER WINDOW REGULATOR SWITCH (REAR LH) 

OK: Go to next step. 

1. Disconnect the P42 motor connector.
2. Check the resistance between the wire harness side connectors.

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Terminal No.	Specified Condition
   P38-2 (D) - P42-2	Below 1 Ω
   P38-4 (U) - P42-1

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

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Terminal No.	Specified Condition
   P38-2 (D) - Body ground	10 kΩ or higher
   P38-4 (U) - Body ground

Fig 3: Identifying P38 Regulator Switch And P42 Motor Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: Go to next step. 

1. Remove the motor.
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 

   SPECIFIED CONDITION CHART
   
   

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

   Fig 4: Identifying Power Window Regulator Motor Assembly (Rear LH)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

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