2005 Lexus RX 330 AWDFACTORY OEM SERVICE PROCEDURE

Inspection Procedure

HINT:

Check which power window cannot be operated, and then proceed with troubleshooting procedures for the applicable power window as shown in POWER WINDOW  .

POWER WINDOW

Position Go To Step
Passenger side 1
Rear LH 5
Rear RH 10
All 15
  1. CHECK MANUAL UP/DOWN FUNCTION (PASSENGER SIDE) 
    1. Check that the power window can be operated with the power window regulator switch.
    1. NG: OTHER PROBLEM (See  MANUAL UP/DOWN FUNCTION DOES NOT OPERATE ON PASSENGER SIDE   ) 
    2. OK: Go to next step. 
  2. READ VALUE OF HAND-HELD TESTER (MASTER SWITCH) 
    1. Check the DATA LIST for proper functioning of the master switch.

      Standard (Power window regulator master switch (Driver door ECU)): 

      MASTER SWITCH

      Item Measurement Item/Display (Range) Normal Condition
      PP/W AUTO SW Passenger door remote power window auto switch signal/ON or OFF ON: Passenger door remote power window auto switch operates
      OFF: Passenger door remote power window auto switch does not operate
      P P/W UP SW Passenger door remote power window manual up switch signal/ON or OFF ON: Passenger door remote power window manual up switch operates
      OFF: Passenger door remote power window manual up switch does not operate
      P P/W DOWN SW Passenger door remote power window manual down switch signal/ON or OFF ON: Passenger door remote power window manual down switch operates
      OFF: Passenger door remote power window manual down switch does not operate
    1. NG: REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSY 
    2. OK: Go to next step. 
  3. CHECK WIRE HARNESS (FOR REGULATOR SWITCH) 
    1. Disconnect the P19 regulator switch connector.
    2. Turn the ignition switch ON.
    3. Using an oscilloscope, check the waveform of the terminals.
      Fig 1: Checking Wire Harness (For Regulator Switch)
      G03009701Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      The waveform is as shown in  Fig 2  . 

      Fig 2: Checking Waveform
      G03009702Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM REFERENCE

      Tester Connection P19-2 (MPX1) - P19-7 (GND)
      Tool Setting 10 V/DIV., 1 ms/DIV.
      Condition Operating passenger side switch of master switch
    1. NG: Go to step 4. 
    2. OK: REPLACE POWER WINDOW REGULATOR SWITCH ASSY (PASSENGER SIDE) 
  4. CHECK WIRE HARNESS (POWER WINDOW REGULATOR SWITCH ASSY - MULTIPLEX NETWORK BODY ECU AND BODY GROUND) 
    1. Disconnect the P19 regulator switch connector.
    2. Disconnect the B5 ECU connector.
    3. Check the resistance of the terminals of the wire harness side connectors.

      Standard: 

      POWER WINDOW REGULATOR SWITCH ASSY - MULTIPLEX NETWORK BODY ECU AND BODY GROUND

      Tester Connection Specified Condition
      P19-2 (MPX1) - B5-19 (MPX4) Below 1 Ω
      P19-2 (MPX1) - Body ground 10 kΩ or higher
      Fig 3: Checking Wire (Power Window Regulator Switch Assy - Multiplex Network Body ECU And Body Ground)
      G03009703Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 
    2. OK: REPLACE MULTIPLEX NETWORK BODY ECU 
  5. CHECK MANUAL UP/DOWN FUNCTION (REAR LH) 
    1. Check that the door glass can be operated with the power window regulator switch.
    1. NG: OTHER PROBLEM (See  MANUAL UP/DOWN FUNCTION DOES NOT OPERATE AT REAR LH   ) 
    2. OK: Go to next step. 
  6. READ VALUE OF HAND-HELD TESTER (MASTER SWITCH) 
    1. Check the DATA LIST for proper functioning of the master switch.

      Standard (Power window regulator master switch (Driver door ECU)): 

      MASTER SWITCH

      Item Measurement Item/Display (Range) Normal Condition
      RL P/W AUTO SW Rear LH door remote power window auto switch signal/ON or OFF ON: Rear LH door remote power window auto switch operates
      OFF: Rear LH door remote power window auto switch does not operate
      RL P/W UP SW Rear LH door remote power window manual up switch signal/ON or OFF ON: Rear LH door remote power window manual up switch operates
      OFF: Rear LH door remote power window manual up switch does not operate
      RL P/W DOWN SW Rear LH door remote power window manual down switch signal/ON or OFF ON: Rear LH door remote power window manual down switch operates
      OFF: Rear LH door remote power window manual down switch does not operate
    1. NG: REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSY 
    2. OK: Go to next step. 
  7. CHECK WIRE HARNESS (FOR REGULATOR SWITCH) 
    1. Disconnect the P20 regulator switch connector.
    2. Turn the ignition switch ON.
    3. Using an oscilloscope, check the waveform of the terminals.
      Fig 4: Checking Wire Harness (For Regulator Switch)
      G03009704Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      The waveform is as shown in  Fig 5 

      Fig 5: Checking Waveform
      G03009705Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      FOR REGULATOR SWITCH

      Tester Connection P20-2 (MPX1) - P20-7 (GND)
      Tool Setting 10 V/DIV., 1 ms/DIV.
      Condition Operating rear LH switch of master switch
    1. NG: Go to step 8. 
    2. OK: REPLACE POWER WINDOW REGULATOR SWITCH ASSY REAR (REAR LH) 
  8. CHECK WIRE HARNESS (POWER WINDOW REGULATOR SWITCH ASSY - BODY GROUND) 
    1. Disconnect the P20 regulator switch connector.
    2. Check the resistance between the terminals of the wire harness side connector and the body ground.

      Standard: 

      POWER WINDOW REGULATOR SWITCH ASSY - BODY GROUND

      Tester Connection Specified Condition
      P20-10 (SEL2) - Body ground Below 1 Ω
      Fig 6: Checking Wire Harness (Power Window Regulator Switch Assy - Body Ground)
      G03009706Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 
    2. OK: Go to next step. 
  9. CHECK WIRE HARNESS (POWER WINDOW REGULATOR SWITCH ASSY - MULTIPLEX NETWORK BODY ECU AND BODY GROUND) 
    1. Disconnect the P20 regulator switch connector.
    2. Disconnect the B5 ECU connector.
    3. Check the resistance of the terminals of the wire harness side connectors.

      Standard: 

      POWER WINDOW REGULATOR SWITCH ASSY - MULTIPLEX NETWORK BODY ECU AND BODY GROUND

      Tester Connection Specified Condition
      P20-2 (MPX1) - B5-20 (MPX6) Below 1 Ω
      P20-2 (MPX1) - Body ground 10 kΩ or higher
      Fig 7: Checking Wire Harness (Power Window Regulator Switch Assy - Multiplex Network Body ECU And Body Ground)
      G03009707Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 
    2. OK: REPLACE MULTIPLEX NETWORK BODY ECU 
  10. CHECK MANUAL UP/DOWN FUNCTION (REAR RH) 
    1. Check that the door glass can be operated with the power window regulator switch.
    1. NG: OTHER PROBLEM (See  MANUAL UP/DOWN FUNCTION DOES NOT OPERATE AT REAR RH   ) 
    2. OK: Go to next step. 
  11. READ VALUE OF HAND-HELD TESTER (MASTER SWITCH) 
    1. Check the DATA LIST for proper functioning of the master switch.

      Standard (Power window regulator master switch (Driver door ECU)): 

      MASTER SWITCH

      Item Measurement Item/Display (Range) Normal Condition
      RR P/W AUTO SW Rear RH door remote power window auto switch signal/ON or OFF ON: Rear RH door remote power window auto switch operates
      OFF: Rear RH door remote power window auto switch does not operate
      RR P/W UP SW Rear RH door remote power window manual up switch signal/ON or OFF ON: Rear RH door remote power window manual up switch operates
      OFF: Rear RH door remote power window manual up switch does not operate
      RR P/W DOWN SW Rear RH door remote power window manual down switch signal/ON or OFF ON: Rear RH door remote power window manual down switch operates
      OFF: Rear RH door remote power window manual down switch does not operate
    1. NG: REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSY 
    2. OK: Go to next step. 
  12. CHECK WIRE HARNESS (FOR REGULATOR SWITCH) 
    1. Disconnect the P21 power window switch connector.
    2. Turn the ignition switch ON.
    3. Using an oscilloscope, check the waveform of the terminals.
      Fig 8: Checking Wire Harness (For Regulator Switch)
      G03009708Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      The waveform is as shown in  Fig 9  . 

      Fig 9: Checking Waveform
      G03009709Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      FOR REGULATOR SWITCH

      Tester Connection P21-2 (MPX1) - P21-7 (GND)
      Tool Setting 10 V/DIV., 1 ms/DIV.
      Condition Operating rear RH switch of master switch
    1. NG: Go to step 13. 
    2. OK: REPLACE POWER WINDOW REGULATOR SWITCH ASSY REAR (REAR RH) 
  13. CHECK WIRE HARNESS (POWER WINDOW REGULATOR SWITCH ASSY - BODY GROUND) 
    1. Disconnect the P21 regulator switch connector.
    2. Check the resistance between the terminal of the wire harness side connector and the body ground.

      Standard: 

      POWER WINDOW REGULATOR SWITCH ASSY - BODY GROUND

      Tester Connection Specified Condition
      P21-9 (SEL1) - Body ground Below 1 Ω
      Fig 10: Checking Wire Harness (Power Window Regulator Switch Assy - Body Ground)
      G03009710Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 
    2. OK: Go to next step. 
  14. CHECK WIRE HARNESS (POWER WINDOW REGULATOR SWITCH ASSY - MULTIPLEX NETWORK BODY ECU AND BODY GROUND) 
    1. Disconnect the P21 power window switch connector.
    2. Disconnect the B6 ECU connector.
    3. Check the resistance of the terminals of the wire harness side connectors.

      Standard: 

      POWER WINDOW REGULATOR SWITCH ASSY - MULTIPLEX NETWORK BODY ECU AND BODY GROUND

      Tester Connection Specified Condition
      P21-2 (MPX1) - B6-5 (MPX5) Below 1 Ω
      P21-2 (MPX1) - Body ground 10 kΩ or higher
      Fig 11: Checking Wire Harness (Power Window Regulator Switch Assy - Multiplex Network Body ECU And Body Ground)
      G03009711Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 
    2. OK: REPLACE MULTIPLEX NETWORK BODY ECU 
  15. CHECK POWER WINDOW LOCK SWITCH 
    1. Turn the window lock switch OFF and check that the remote function operates.
    1. NG: Go to step 16. 
    2. OK: END 
  16. INSPECT POWER WINDOW REGULATOR MASTER SWITCH ASSY (FOR WINDOW LOCK SWITCH) 
    1. Remove the master switch (the connector is connected).
    2. Turn the ignition switch ON.
    3. Check the voltage between the terminal and the body ground.

      Standard: 

      POWER WINDOW REGULATOR MASTER SWITCH ASSY (FOR WINDOW LOCK SWITCH)

      Switch Condition Tester Connection Specified Condition
      ON (Normal) P22-6 (PWS) - Body ground 10 to 14 V
      OFF (Lock) P22-6 (PWS) - Body ground Below 1 V
      Fig 12: Inspecting Power Window Regulator Master Switch Assy (For Window Lock Switch)
      G03009712Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSY 
    2. OK: REPAIR OR REPLACE HARNESS AND CONNECTOR (POWER WINDOW REGULATOR MASTER SWITCH ASSY - EACH REGULATOR SWITCH ASSY) 
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