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Inspection Procedure

NOTE: The power window control system uses a multiplex communication system (LIN communication system). Inspect the communication function by following How to Proceed with Troubleshooting (See HOW TO PROCEED WITH TROUBLESHOOTING  ). Troubleshoot the power window control system after confirming that the communication system is functioning properly.
  1. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - EACH ECU) 
    1. Disconnect the D48 and P4 ECU connectors.
      Fig 1: Identifying D48, P4 ECU Connector And H4, J2, K2 Motor Connectors
      G06028872Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Text in Illustration 

      ILLUSTRATION LEGEND

      *1 Front view of wire harness connector (to Main Body ECU (Driver Side Junction Block Assembly)) *2 Front view of wire harness connector (to Power Window Regulator Master Switch Assembly)
      *3 Front view of wire harness connector (to Sliding Roof ECU (Sliding Roof Drive Gear Sub-assembly)) *4 Front view of wire harness connector (to Power Window Regulator Motor Assembly (for Each Door))
      *5 w/ Sliding Roof *6 for Front Passenger Side
      *7 for Rear RH Side *8 for Rear LH Side
    2. Disconnect the H4, J2 and K2 motor connectors.
    3. Measure the resistance and voltage according to the value(s) in the table below.

      Standard Resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Condition Specified Condition
      D48-10 (LIN2) - I6-17 (LIN1) Always Below 1 Ω
      D48-10 (LIN2) - H4-9 (LIN) Always Below 1 Ω
      D48-10 (LIN2) - K2-9 (LIN) Always Below 1 Ω
      D48-10 (LIN2) - J2-9 (LIN) Always Below 1 Ω
      D48-10 (LIN2) - P4-4 (LIN) Always Below 1 Ω
      D48-10 (LIN2) - Body ground Always 10 kΩ or higher

      Standard Voltage 

      VOLTAGE SPECIFICATION

      Tester Connection Condition Specified Condition
      D48-10 (LIN2) - Body ground Always Below 1 V

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

      OK: Go to Next Step 

  2. INSPECT POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY 
    1. Remove the multiplex network master switch assembly (See REMOVAL  ).
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Condition Specified Condition
      16 (LIN2) - 17 (LIN1) Always Below 1 Ω

      Text in Illustration 

      ILLUSTRATION LEGEND

      *1 Component without harness connected (Multiplex Network Master Switch Assembly)
      Fig 2: Identifying Multiplex Network Master Switch Assembly Connector Terminals
      G06028873Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      NG: REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY  (See REMOVAL  )

      OK: Go to Next Step 

  3. CHECK REMOTE UP / DOWN FUNCTION 
    1. Check that the manual up/down function using power window regulator switch assembly can operate the front passenger side, rear LH side rear RH side power windows.

      OK: Manual up/down function is normal  .

      Result 

      RESULT CHART

      Result Proceed to
      OK A
      NG (Front passenger side power window manual up/down function does not operate) B
      NG (Rear LH side power window manual up/down function does not operate) C
      NG (Rear RH side power window manual up/down function does not operate) D

      B: GO TO OTHER PROBLEM (Proceed to FRONT PASSENGER SIDE POWER WINDOW DOES NOT OPERATE WITH FRONT PASSENGER SIDE POWER WINDOW SWITCH )

      C: GO TO OTHER PROBLEM (Proceed to REAR POWER WINDOW LH DOES NOT OPERATE REAR POWER WINDOW SWITCH LH )

      D: GO TO OTHER PROBLEM (Proceed with REAR POWER WINDOW RH DOES NOT OPERATE WITH REAR POWER WINDOW SWITCH RH )

      A: Go to Next Step 

  4. READ VALUE USING TECHSTREAM (Master Switch) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Enter the following menus: Body Electrical / Master Switch / Data List.
    5. Read the Data List according to the display on the Techstream.

      Master Switch (Power Window Regulator Master Switch Assembly) 

      MASTER SWITCH DATA LIST REFERENCE

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      P Door P/W Auto SW Front passenger side power window auto up/down switch signal / ON or OFF ON: Front passenger door power window auto switch operated
      OFF: Front passenger door power window auto switch not operated      		 -
      RL Door P/W Auto SW Rear LH side power window auto up/down switch signal / ON or OFF ON: Rear LH power window auto switch operated
      OFF: Rear LH power window auto switch not operated      		 -
      RR Door P/W Auto SW Rear RH side power window auto up/down switch signal / ON or OFF ON: Rear RH power window auto switch operated
      OFF: Rear RH power window auto switch not operated      		 -
      P Door P/W Up SW Front passenger side power window manual up switch signal / ON or OFF ON: Front passenger door power window manual up switch operated
      OFF: Front passenger door power window manual up switch not operated      		 -
      RL Door P/W Up Switch Rear LH side power window manual up switch signal / ON or OFF ON: Rear LH power window manual up switch operated
      OFF: Rear LH power window manual up switch not operated      		 -
      RR Door P/W Up Switch Rear RH side power window manual up switch signal / ON or OFF ON: Rear RH power window manual up switch operated
      OFF: Rear RH power window manual up switch not operated      		 -
      P Door P/W Down SW Front passenger side power window manual down switch signal / ON or OFF ON: Front passenger door power window manual down switch operated
      OFF: Front passenger door power window manual down switch not operated      		 -
      RL Door P/W Down SW Rear LH side power window manual down switch signal / ON or OFF ON: Rear LH power window manual down switch operated
      OFF: Rear LH power window manual down switch not operated      		 -
      RR Door P/W Down SW Rear RH side power window manual down switch signal / ON or OFF ON: Rear RH power window manual down switch operated
      OFF: Rear RH power window manual down switch not operated      		 -
      Window Lock Switch Status Window lock switch signal / ON or OFF ON: Window lock switch LOCK position
      OFF: Window lock switch UNLOCK position      		 -

      OK: On the Techstream screen, ON or OFF is displayed accordingly  .

      Result 

      RESULT CHART

      Result Proceed to
      NG A
      OK (Front passenger side power window remote up/ down function does not operate) B
      OK (Rear LH side power window remote up/down function does not operate) C
      OK (Rear RH side power window remote up/down function does not operate) D

      B: REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Front Passenger Side)  (See REMOVAL  )

      C: REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Rear LH Side)  (See REMOVAL  )

      D: REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Rear RH Side)  (See REMOVAL  )

      A: REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY  (See REMOVAL  )

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