LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2007 >> Prius Base >> Repair and Diagnosis >> 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. 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
      Fig 1: Identifying Power Window Regulator Switch Connectors
      G04476752Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    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. 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
      Fig 2: Identifying Power Window Regulator Motor Rear LH Connectors
      G04476753Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    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. 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
      Fig 3: Identifying Power Window Regulator Master Switch Connectors
      G04476754Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG : REPAIR OR REPLACE HARNESS AND CONNECTOR 

    OK : REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY 

scientia non olet · About LEMON Manuals