LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2009 >> Prius Base >> Repair and Diagnosis (Single Page) >> Body & Frame >> Windows >> Windshield/WINDOWGLASS >> Power Window Control System >> Manual Up / Down Function does not Operate on Rear LH Only >> Inspection Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Inspection Procedure

  1. CHECK POWER WINDOW REGULATOR SWITCH ASSEMBLY REAR LH (POWER SOURCE VOLTAGE) 
    1. Disconnect the P15 switch connector.
      2. Fig 1: Identifying Power Window Regulator Switch Connectors
      G04476752Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage of the wire harness side connector.

      Standard voltage 

      TERMINALS VOLTAGE SPECIFICATION

      Tester Connection Condition Specified Condition
      P15-4 - Body ground Power switch ON (IG) 10 to 14 V

    NG : REPAIR OR REPLACE HARNESS AND CONNECTOR (DRIVER SIDE JUNCTION BLOCK - REGULATOR SWITCH) 

    OK : GO TO NEXT STEP 

  2. INSPECT POWER WINDOW REGULATOR SWITCH ASSEMBLY REAR LH 
    1. Check the regulator switch (see REAR POWER WINDOW SWITCH ).

    NG : REPLACE POWER WINDOW REGULATOR SWITCH ASSEMBLY REAR LH 

    OK : GO TO NEXT STEP 

  3. CHECK WIRE HARNESS (REGULATOR SWITCH - REGULATOR MOTOR) 
    1. Disconnect the P15 switch connector.
    2. Disconnect the P20 motor connector.
      3. Fig 2: Identifying Power Window Regulator Motor Rear LH Connectors
      G04476753Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance of the wire harness side connectors.

      Standard resistance 

      TERMINALS RESISTANCE SPECIFICATION

      Tester Connection Specified Condition
      P15-1 - P20-1 Below 1 Ω
      P15-3 - P20-2 Below 1 Ω
      P15-1 or P20-1 - Body ground 10 kΩ or higher
      P15-3 or P20-2 - Body ground 10 kΩ or higher

    NG : REPAIR OR REPLACE HARNESS AND CONNECTOR 

    OK : GO TO NEXT STEP 

  4. INSPECT POWER WINDOW REGULATOR MOTOR ASSEMBLY REAR LH 
    1. Check the regulator motor (see POWER WINDOW REGULATOR MOTOR ).

    NG : REPLACE POWER WINDOW REGULATOR MOTOR 

    OK : GO TO NEXT STEP 

  5. CHECK WIRE HARNESS (MASTER SWITCH - REGULATOR SWITCH) 
    1. Disconnect the P17 switch connector.
    2. Disconnect the P15 switch connector.
      3. Fig 3: Identifying Power Window Regulator Master Switch Connectors
      G04476754Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance of the wire harness side connectors.

      Standard resistance 

      TERMINALS RESISTANCE SPECIFICATION

      Tester Connection Specified Condition
      P17-12 (RLU) - P15-5 Below 1 Ω
      P17-10 (RLD) - P15-2 Below 1 Ω
      P17-12 (RLU) or P15-5 - Body ground 10 kΩ or higher
      P17-10 (RLD) or P15-2 - Body ground 10 kΩ or higher

    NG : REPAIR OR REPLACE HARNESS AND CONNECTOR 

    OK : REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY 

scientia non olet · About LEMON Manuals