LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Scion >> 2009 >> tC Automatic >> Repair and Diagnosis >> Body & Frame >> Windows >> Windshield/WINDOWGLASS >> Power Window Control System >> Front Passenger Side Power Window does not Operate with Front Passenger Side Power Window Switch >> Inspection Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Inspection Procedure

  1. CHECK AUTO UP/DOWN FUNCTION (PASSENGER SIDE) 
    1. Check that the power window AUTO UP/DOWN function operates normally.

    OK: REPLACE POWER WINDOW REGULATOR SWITCH ASSEMBLY (PASSENGER SIDE) 

    NG: Go to next step 

  2. INSPECT FUSE (FR DOOR) 
    1. Disconnect the FR DOOR fuse from the instrument panel junction block.
    2. Measure the resistance of the fuse.

      Standard resistance: 

      Below 1 Ω 

    NG: REPLACE FUSE 

    OK: Go to next step 

  3. CHECK WIRE HARNESS (POWER WINDOW REGULATOR SWITCH ASSEMBLY (PASSENGER SIDE) - BATTERY AND BODY GROUND) 
    1. Disconnect the P12 regulator switch connector.
    2. Measure the voltage and resistance of the wire harness side connector.

      Standard voltage 

      VOLTAGE SPECIFICATION

      Tester Connection Specified Condition
      P12-12 (B) - Body ground 11 to 14 V

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Specified Condition
      P12-7 (GND) - Body ground Below 1 Ω

    NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

    Fig 1: Identifying P12 Regulator Switch Connector Terminals
    G05541737Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to next step 

  4. CHECK POWER WINDOW REGULATOR SWITCH ASSEMBLY (WINDOW LOCK SWITCH SIGNAL) 
    1. Remove the regulator switch but do not disconnect the connector.
    2. Turn the ignition switch ON.
    3. Measure the voltage of the connector.

      Standard voltage 

      VOLTAGE SPECIFICATION

      Tester Connection Condition Specified Condition
      P12-11 (PCT) - P11-7 (GND) Window LOCK switch OFF (Normal) 11 to 14 V
      P12-11 (PCT) - P11-7 (GND) Window LOCK switch ON (Lock) Below 1 V
      Fig 2: Identifying P12 Power Window Regulator Switch Connector Terminals
      G05541738Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK:  Go to step  6

    NG: Go to next step 

  5. CHECK WIRE HARNESS (POWER WINDOW REGULATOR SWITCH ASSEMBLY - POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY) 
    1. Disconnect the P12 regulator switch connector.
    2. Disconnect the P9 master switch connector.
    3. Measure the resistance of the wire harness side connectors.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Specified Condition
      P12-11 (PCT) - P9-6 (PCT) Below 1 Ω
      P12-11 (PCT) - Body ground 10 kΩ or higher

    NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

    Fig 3: Identifying P12 Regulator Switch And P9 Master Switch Connector Terminals
    G05541739Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY 

  6. CHECK WIRE HARNESS (REGULATOR SWITCH ASSEMBLY - POWER WINDOW REGULATOR MOTOR ASSEMBLY RH) 
    1. Disconnect the P12 regulator switch connector.
    2. Disconnect the P11 power window motor connector.
    3. Measure the resistance of the wire harness side connectors.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Specified Condition
      P12-1 (D) - P11-1 (D) Below 1 Ω
      P12-6 (U) - P11-2 (U) Below 1 Ω
      P12-1 (D) - Body ground 10 kΩ or higher
      P12-6 (U) - Body ground 10 kΩ or higher

    NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

    Fig 4: Identifying P12 Regulator Switch And P11 Power Window Motor Connector Terminals
    G05541740Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to next step 

  7. CHECK POWER WINDOW REGULATOR SWITCH ASSEMBLY (PASSENGER SIDE) 
    Fig 5: Identifying Power Window Regulator Switch Connector Terminals (Passenger Side)
    G05541741Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Remove the regulator switch but do not disconnect the connector.
    2. Turn the ignition switch ON.
    3. Measure the voltage of the connector.

      Standard voltage 

      VOLTAGE SPECIFICATION

      Tester Connection Condition Specified Condition
      P12-6 (U) - P12-7 (GND) UP 11 to 14 V
      P12-1 (D) - P12-7 (GND) DOWN 11 to 14 V

    NG: REPLACE POWER WINDOW REGULATOR SWITCH ASSEMBLY (PASSENGER SIDE) 

    OK: REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY RH (PASSENGER SIDE)