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Home >> Lexus >> 2008 >> IS F >> Repair and Diagnosis >> Body & Frame >> Windows >> Windshield/WINDOWGLASS >> Power Window Control System >> Remote Up / Down Function does not Operate >> Inspection Procedure
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Inspection Procedure

NOTE:
  • When the multiplex network master switch assembly connector or multiplex network switch assembly (applicable location) connector is disconnected, the power window control system must be initialized (See CUSTOMIZE PARAMETERS  ).
  • Since the power window control system has functions that use multiplex communication (BEAN), first confirm that there is no malfunction in the multiplex communication system by inspecting the multiplex communication functions in accordance with the How to Proceed with Troubleshooting procedure (See HOW TO PROCEED WITH TROUBLESHOOTING  ). Then, conduct the following inspection procedure.
  1. CHECK POWER WINDOW CONTROL SYSTEM (WINDOW LOCK SWITCH) 
    1. Check that the multiplex network switch assemblies (front passenger, rear LH and rear RH side) are disabled when the window lock switch of the multiplex network master switch assembly is pressed.

      OK: Multiplex network switch assemblies (front passenger, rear LH and rear RH side) are disabled. 

    2. Check that the multiplex network switch assemblies (front passenger, rear LH and rear RH side) operate when the window lock switch is pressed again.
      Fig 1: Identifying Power Window Control System (Window Lock Switch)
      G05755715Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: Multiplex network switch assemblies (front passenger, rear LH and rear RH side) can be operated. 

    NG: Go to step 2 

    OK: END 

  2. READ VALUE USING TECHSTREAM (MASTER SWITCH) 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG)
    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 (Multiplex Network Master Switch Assembly) 

      DATA LIST

      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 side power window switch is operated (AUTO operation)
      OFF Front passenger side power window switch is not operated      		 -
      Rl Door P/W Auto SW Rear LH power window AUTO UP / DOWN switch signal/ON or OFF ON Rear LH power window switch is operated (AUTO operation)
      OFF Rear LH power window switch is not operated      		 -
      Rr Door P/W Auto SW Rear RH power window AUTO UP / DOWN switch signal/ON or OFF ON Rear RH power window switch is operated (AUTO operation)
      OFF Rear RH power window switch is not operated      		 -
      P Door P/W Up SW Front passenger side power window MANUAL UP switch signal/ON or OFF ON Front passenger side power window switch is operated (MANUAL UP operation)
      OFF Front passenger side power window switch is not operated      		 -
      Rl Door P/W Up SW Rear LH power window MANUAL UP switch signal/ON or OFF ON Rear LH power window switch is operated (MANUAL UP operation)
      OFF Rear LH power window switch is not operated      		 -
      Rr Door P/W Up SW Rear RH power window MANUAL UP switch signal/ON or OFF ON Rear RH power window switch is operated (MANUAL UP operation)
      OFF Rear RH power window switch is not operated      		 -
      P Door P/W Down SW Front passenger side power window MANUAL DOWN switch signal/ON or OFF ON Front passenger side power window switch is operated (MANUAL DOWN operation)
      OFF Front passenger side power window switch is not operated      		 -
      Rl Door P/W Down SW Rear LH power window MANUAL DOWN switch signal/ON or OFF ON Rear LH power window switch is operated (MANUAL DOWN operation)
      OFF Rear LH power window switch is not operated      		 -
      Rr Door P/W Down SW Rear RH power window MANUAL DOWN switch signal/ON or OFF ON Rear RH power window switch is operated (MANUAL DOWN operation)
      OFF Rear RH power window switch is 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: The Techstream display changes in accordance with multiplex network master switch assembly operation. 

    NG: REPLACE MULTIPLE NETWORK MASTER SWITCH ASSEMBLY  (See REMOVAL  )

    OK: Go to next step 

  3. CHECK POWER WINDOW CONTROL SYSTEM (REMOTE UP/DOWN FUNCTION (EACH DOORS)) 
    1. Check that the each door remote UP/DOWN function operates (See OPERATION CHECK  )

      Result 

      RESULT REFERENCE

      Result Proceed to
      Front passenger side does not operate A
      Rear LH side does not operate B
      Rear RH side does not operate C
      All doors do not operate D

    A: Go to step  5

    B: Go to step  9

    C: Go to step  13

    D: Go to next step 

  4. CHECK DTC OUTPUT (MULTIPLEX COMMUNICATION SYSTEM) 
    1. Check the DTC (See DIAGNOSTIC TROUBLE CODE CHART ).

      OK: No DTC B1206 is output. 

    NG: GO TO MULTIPLEX COMMUNICATION SYSTEM (DTC 1206)  (See DTC B1206 P/W MASTER SWITCH COMMUNICATION STOP )

    OK: REPLACE MULTIPLE NETWORK MASTER SWITCH ASSEMBLY  (See REMOVAL  )

  5. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU RH - SWITCH (for Front Passenger Side)) 
    1. Disconnect the main body ECU RH (cowl side junction block RH).
    2. Disconnect the multiplex network switch assembly (for front passenger side)
      Fig 2: Identifying Main Body ECU RH Connector Terminals (Cowl Side Junction Block RH)
      G05755728Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance 

      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition
      J75-19 (MPX4) - L13-2 (MPX1) Always Below 1 Ω
      J75-19 (MPX4) - Body ground Always 10 kΩ or higher

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  6. REPLACE MULTIPLEX NETWORK SWITCH ASSEMBLY (for Front Passenger Side) 
    1. Replace the multiplex network switch assembly (for front passenger side) (See REMOVAL  ).
  7. PERFORM INITIALIZATION (POWER WINDOW CONTROL SYSTEM (for Front Passenger Side)) 
    1. Initialize the power window control system (for front passenger side) (See CUSTOMIZE PARAMETERS  ).
  8. CHECK POWER WINDOW CONTROL SYSTEM (FRONT PASSENGER SIDE REMOTE UP/DOWN FUNCTION) 
    1. Check that the front passenger side remote UP/DOWN function operates normally (See OPERATION CHECK  ).

      OK: Front passenger side remote UP/DOWN function operates normally. 

    NG: REPLACE MAIN BODY ECU RH (COWL SIDE JUNCTION BLOCK RH) 

    OK: END (MULTIPLEX NETWORK SWITCH ASSEMBLY IS DEFECTIVE) 

  9. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU RH - SWITCH (for Rear LH Side)) 
    1. Disconnect the main body ECU RH (cowl side junction block RH).
    2. Disconnect the multiplex network switch assembly (for rear LH side).
      Fig 3: Identifying Multiplex Network Switch Assembly Connector Terminals (For Rear LH Side)
      G05755729Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance 

      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition
      J75-20 (MPX6) - O1-2 (MPX1) Always Below 1 Ω
      J75-20 (MPX6) - Body ground Always 10 kΩ or higher

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step. 

  10. REPLACE MULTIPLEX NETWORK SWITCH ASSEMBLY (for Rear LH Side) 
    1. Replace the multiplex network switch assembly (for rear LH side) (See REMOVAL  )
  11. PERFORM INITIALIZATION (POWER WINDOW CONTROL SYSTEM (for Rear LH Side)) 
    1. Initialize the power window control system (for rear LH side) (See CUSTOMIZE PARAMETERS  )
  12. CHECK POWER WINDOW CONTROL SYSTEM (REAR LH SIDE REMOTE UP/DOWN FUNCTION) 
    1. Check that the rear LH side remote UP/DOWN function operates normally (See OPERATION CHECK  )

      OK: Rear LH side remote UP/DOWN function operates normally. 

    NG: REPLACE MAIN BODY ECU RH (COWL SIDE JUNCTION BLOCK RH) 

    OK: END (MULTIPLEX NETWORK SWITCH ASSEMBLY IS DEFECTIVE) 

  13. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU RH - SWITCH (for Rear RH Side)) 
    1. Disconnect the main body ECU RH (cowl side junction block RH).
    2. Disconnect the multiplex network switch assembly (for rear RH side)
      Fig 4: Identifying Multiplex Network Switch Assembly Connector Terminals (For Rear RH Side)
      G05755730Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance 

      STANDARD RESISTANCE

      Taster Connection Condition Specified Condition
      P1-5 (MPX5) - N1-2 (MPX1) Always Below 1 Ω
      P1-5 (MPX5) - Body ground Always 10 kΩ or higher

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  14. REPLACE MULTIPLEX NETWORK SWITCH ASSEMBLY (for Rear RH Side) 
    1. Replace the multiplex network switch assembly (for rear RH side) (See REMOVAL  ).
  15. PERFORM INITIALIZATION (POWER WINDOW CONTROL SYSTEM (for Rear RH Side)) 
    1. Initialize the power window control system (for rear RH side) (See CUSTOMIZE PARAMETERS  )
  16. CHECK POWER WINDOW CONTROL SYSTEM (REAR RH SIDE REMOTE UP/DOWN FUNCTION) 
    1. Check that the rear RH side remote UP/DOWN function operates normally (See OPERATION CHECK  ).

      OK: Rear RH side remote UP/DOWN function operates normally. 

    NG: REPLACE MAIN BODY ECU RH (COWL SIDE JUNCTION BLOCK RH) 

    OK: END (MULTIPLEX NETWORK SWITCH ASSEMBLY IS DEFECTIVE) 

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