Power Window Control System (Diagnostics - Introduction): Diagnosis Lexus GX J150

HOW TO PROCEED WITH TROUBLESHOOTING

HINT

1. Use these procedures to troubleshoot the power window control system.
2. *: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP NEXT: Go to next step
2. INSPECT BATTERY VOLTAGE Standard voltage 11 to 14 V If the voltage is below 11 V, recharge or replace the battery before proceeding. NEXT: Go to next step
3. CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* Use the Techstream to check if the CAN communication system is functioning normally. Refer to «PRECAUTION»(ref-524289-S12111635562013012800000) . RESULT Result Proceed to CAN DTC is not output A CAN DTC is output B B --> GO TO CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-524289-S06634024762013012800000) A: Go to next step
4. CHECK COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM* Check if the LIN communication system is functioning normally. RESULT Result Proceed to LIN DTC is not output A LIN DTC is output B B --> GO TO LIN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-524330-S27084996322013012800000) A: Go to next step
5. CHECK FOR DTC* Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-524122-S21022408872013012800000) . Recheck for DTCs. RESULT Result Proceed to No DTCs are output A DTC B2311 is output B DTC B2312 is output B DTC B2313 is output B B --> GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-524122-S08428516852013012800000) A: Go to next step
6. PROBLEM SYMPTOMS TABLE Refer to Problem Symptoms Table. Refer to «PROBLEM SYMPTOMS TABLE»(ref-524122-S30310640052013012800000) . RESULT Result Proceed to Fault not listed in problem symptoms table A Fault listed in problem symptoms table B B --> GO TO STEP 8 A: Go to next step
7. OVERALL ANALYSIS AND TROUBLESHOOTING* Operation Check. Refer to «OPERATION CHECK»(ref-524122-S08097623332013012800000) . Terminals of ECU. Refer to «TERMINALS OF ECU»(ref-524122-S26371829752013012800000) . Data List / Active Test. Refer to «DATA LIST / ACTIVE TEST»(ref-524122-S04183156302013012800000) . NEXT: Go to next step
8. REPAIR OR REPLACE RESULT Result Proceed to Door window regulator replaced or removed/installed A Door window regulator not replaced or removed/installed B B --> GO TO STEP 10 A: Go to next step
9. RESET POWER WINDOW REGULATOR If a power window regulator switch LED is blinking, initialize the power window regulator. Refer to «INITIALIZATION»(ref-524122-S26238199112013012800000) . NEXT: Go to next step
10. CONFIRMATION TEST NEXT --> END

Scheme 1

1. CHECK WINDOW LOCK SWITCH HINT: Before performing the window lock switch operation check, make sure that the window lock switch is off (the switch is not pushed in). When the window lock switch of the multiplex network master switch assembly is pushed in, the LED on the switch will illuminate. Check that the power window switch operation indicators for all of switches other than those on the multiplex network master switch are off and that the front passenger and rear windows are disabled. OK Front passenger and rear windows are disabled. HINT: Even when the window lock switch of the multiplex network master switch assembly is pushed in, remote manual up and down and auto up and down functions can be operated. When the window lock switch is pushed in again, the LED on the switch will go off. Check that all of the power window switch operation indicators illuminate and that the front passenger and rear windows can be operated normally. OK Front passenger and rear windows operate normally.
2. CHECK MANUAL UP / DOWN FUNCTION Check that the driver side power window operates as follows: OK Condition Master Switch Switch Operation Power Window Engine switch on (IG) Driver side Pulled halfway up UP (Closes) Pushed halfway down DOWN (Opens) Check that the front passenger side window and rear power windows operate as follows: OK Condition Regulator Switch Switch Operation Power Window Engine switch on (IG) Window lock switch off Front passenger side Pulled halfway up UP (Closes) Pushed halfway down DOWN (Opens) Rear LH side Pulled halfway up UP (Closes) Pushed halfway down DOWN (Opens) Rear RH side Pulled halfway up UP (Closes) Pushed halfway down DOWN (Opens)
3. CHECK AUTO UP / DOWN FUNCTION Check that the driver side power window operates as follows: OK Condition Master Switch Switch Operation Power Window Engine switch on (IG) Driver side Pulled up (One touch operation) AUTO UP (Closes) Pushed down (One touch operation) AUTO DOWN (Opens) Check that the front passenger side window and rear power windows operate as follows: OK Condition Regulator Switch Switch Operation Power Window Engine switch on (IG) Window lock switch off Front passenger side Pulled up (One touch operation) AUTO UP (Closes) Pushed down (One touch operation) AUTO DOWN (Opens) Rear LH side Pulled up (One touch operation) AUTO UP (Closes) Pushed down (One touch operation) AUTO DOWN (Opens) Rear RH side Pulled up (One touch operation) AUTO UP (Closes) Pushed down (One touch operation) AUTO DOWN (Opens)
4. CHECK REMOTE MANUAL UP / DOWN FUNCTION Check that the front passenger side window and rear power windows operate as follows: OK Condition Master Switch Switch Operation Power Window Engine switch on (IG) Front passenger side Pulled halfway up UP (Closes) Pushed halfway down DOWN (Opens) Rear LH side Pulled halfway up UP (Closes) Pushed halfway down DOWN (Opens) Rear RH side Pulled halfway up UP (Closes) Pushed halfway down DOWN (Opens)
5. CHECK REMOTE AUTO UP / DOWN FUNCTION Check that the front passenger side window and rear power windows operate as follows: OK Condition Master Switch Switch Operation Power Window Engine switch on (IG) Front passenger side Pulled up (One touch operation) AUTO UP (Closes) Pushed down (One touch operation) AUTO DOWN (Opens) Rear LH side Pulled up (One touch operation) AUTO UP (Closes) Pushed down (One touch operation) AUTO DOWN (Opens) Rear RH side Pulled up (One touch operation) AUTO UP (Closes) Pushed down (One touch operation) AUTO DOWN (Opens)
6. CHECK POWER WINDOW OPERATION FUNCTION AFTER ENGINE SWITCH IS TURNED OFF Check that all the power windows can be operated with the multiplex network master switch and power window regulator switch (for front passenger side, rear LH and RH sides) after the engine switch is turned off. HINT: If the window lock switch is on, the windows cannot be operated using the power window regulator switch assemblies (for front passenger, rear LH and rear RH sides) and power window regulator master switch (remote function). Therefore, turn the window lock switch off before checking the window operation. Check that the key-off operation function does not operate after the driver side door or front passenger side door is opened. HINT: If the driver door or front passenger door is opened during automatic window operation while the key-off operation function is on, the window will stop operating. Check that all the power windows cannot be operated after more than approximately 43 seconds have elapsed since the engine switch was turned off.
7. CHECK KEY-LINKED OPEN AND CLOSE FUNCTION NOTE: This inspection is possible only when the key-linked open and close function is set to ON through the customize function using the Techstream (the default setting is OFF). Check that all power windows operate as follows: OK Condition Door Key Cylinder Operation Power Window No key is inside vehicle and all doors are closed Held in lock position for more than 2 seconds Up (Closes) No key is inside vehicle and all doors are closed Returned to neutral position Stop No key is inside vehicle and all doors are closed Held in unlock position for more than 2 seconds Down (Opens) No key is inside vehicle and all doors are closed Returned to neutral position Stop
8. CHECK WIRELESS TRANSMITTER-LINKED OPEN AND CLOSE FUNCTION NOTE: This inspection is possible only when the wireless transmitter-linked open function is set to ON through the customize function using the Techstream (the default setting is OFF). Check that all power windows operate as follows when operating the transmitter: OK Condition Transmitter Operation Power Window No key is inside vehicle, and all doors are closed and locked UNLOCK switch pressed for more than 3.0 seconds Down (Opens) No key is inside vehicle, and all doors are closed and locked UNLOCK switch released Stops
9. CHECK JAM PROTECTION FUNCTION Check the basic function. WARNING: Do not put your fingers between the door frame and door glass to check the jam protection function. Also, prevent any part of your body from being caught during inspection. HINT: The jam protection function is operative during both the auto up and manual up operations while the engine is running or the engine switch is on (IG), and also 43 sec. have elapsed after the engine switch is turned off. Fully open the window. Set a thick book wrapped with a piece of cloth near the window fully closed position. TEXT IN ILLUSTRATION *1 Thick Book *2 Cloth Operate the auto up or manual up function to check that the power window goes down after the book is caught between the window and door frame, and stops when the opening reaches approximately 200 mm (7.87 in.). HINT: The power window moves down approximately 125 mm (4.93 in.). However, when the opening does not reach 200 mm (7.87 in.), the power window continues to go down until the opening reaches 200 mm (7.87 in.) or until approximately 5 seconds elapse. While the power window is moving down, check that the door glass cannot be raised when the power window switch is used.
10. CHECK POWER WINDOW SWITCH LED ILLUMINATION Check the LED illumination (multiplex network master switch). Check that the LEDs located on the multiplex network master switch illuminate when the engine switch is turned on (IG). Check the LED illumination (power window regulator switch [for front passenger side]). Check that the LED located on the power window regulator switch (for front passenger side) illuminates when the engine switch is turned on (IG). HINT: If the window lock switch is on, the LED located on the power window regulator switch (for front passenger side) does not illuminate. Therefore, turn the window lock switch off before checking the LED illumination. Check the LED illumination (power window regulator switch [for rear LH and rear RH]). Check that the LED located on each power window regulator switch (for rear LH and rear RH) illuminates when the engine switch is turned on (IG). HINT: If the window lock switch is on, the LEDs located on the power window regulator switch assemblies (for rear LH and rear RH) do not illuminate. Therefore, turn the window lock switch off before checking the LED illumination.

PROBLEM SYMPTOMS TABLE

HINT

1. Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
2. Inspect the fuses and relays related to this system before inspecting the suspected areas below.

POWER WINDOW CONTROL SYSTEM

Scheme 2

Scheme 3

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Scheme 5

Scheme 6

Scheme 7

Scheme 8

Scheme 9

Scheme 10

1. CHECK MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY Disconnect the K3 multiplex network master switch connector. Measure the voltage and resistance according to the value(s) in the table below. HINT: Measure the values on the wire harness side with the connector disconnected. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition K3-11 (B) - K3-12 (GND) L - W-B Power supply Always 11 to 14 V K3-12 (GND) - Body ground W-B - Body ground Ground Always Below 1 ohms If the result is not as specified, there may be a malfunction in the wire harness side. Reconnect the K3 multiplex network master switch connector. Measure the voltage according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition K3-15 (DOWN) - K3-12 (GND) B - W-B Power window motor down input Engine switch on (IG), driver side power window regulator switch off 11 to 14 V K3-15 (DOWN) - K3-12 (GND) B - W-B Power window motor down input Engine switch on (IG), driver side power window switch down (Manual operation) Below 1 V K3-18 (LED) - K3-12 (GND) V - W-B LED illumination signal Engine switch on (IG) 11 to 14 V K3-18 (LED) - K3-12 (GND) V - W-B LED illumination signal Approximately 43 seconds after Engine switch turned off Below 1 V K3-20 (UP) - K3-12 (GND) P - W-B Power window motor up input Engine switch on (IG), driver side power window switch off 11 to 14 V K3-20 (UP) - K3-12 (GND) P - W-B Power window motor up input Engine switch on (IG), driver side power window switch up (Manual operation) Below 1 V If the result is not as specified, the multiplex network master switch may have a malfunction.
2. CHECK POWER WINDOW REGULATOR SWITCH ASSEMBLY RH Disconnect the J1 power window regulator switch connector. Measure the resistance according to the value(s) in the table below. HINT: Measure the values on the wire harness side with the connector disconnected. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition J1-5 (GND) - Body ground W-B - Body ground Ground Always Below 1 ohms If the result is not as specified, there may be a malfunction in the wire harness side. Reconnect the J1 power window regulator switch connector. Measure the voltage according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition J1-2 (UP) - J1-5 (GND) L - W-B Power window motor up input Engine switch on (IG), power window regulator switch off 11 to 14 V J1-2 (UP) - J1-5 (GND) L - W-B Power window motor up input Engine switch on (IG), power window regulator switch up Below 1 V J1-4 (AUTO) - J1-5 (GND) P - W-B Power window motor auto up or down input Engine switch on (IG), door glass fully open 11 to 14 V J1-4 (AUTO) - J1-5 (GND) P - W-B Power window motor auto up or down input Engine switch on (IG), power window auto up or down function operating Below 1 V J1-4 (AUTO) - J1-5 (GND) P - W-B Power window motor auto up or down input Engine switch on (IG), door glass fully closed 11 to 14 V J1-8 (LED) - J1-5 (GND) V - W-B LED illumination signal Engine switch on (IG) 11 to 14 V J1-8 (LED) - J1-5 (GND) V - W-B LED illumination signal Approximately 43 seconds after the Engine switch is turned off Below 1 V J1-10 (DOWN) - J1-5 (GND) B - W-B Power window motor down input Engine switch on (IG), power window regulator switch off 11 to 14 V J1-10 (DOWN) - J1-5 (GND) B - W-B Power window motor down input Engine switch on (IG), power window regulator switch down Below 1 V If the result is not as specified, the power window regulator switch may have a malfunction.
3. CHECK REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY LH Disconnect the M2 rear power window regulator switch connector. Measure the resistance according to the value(s) in the table below. HINT: Measure the values on the wire harness side with the connector disconnected. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition M2-5 (GND) - Body ground W-B - Body ground Ground Always Below 1 ohms If the result is not as specified, there may be a malfunction in the wire harness side. Reconnect the M2 rear power window regulator switch connector. Measure the voltage according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition M2-2 (UP) - M2-5 (GND) L - W-B Power window motor up input Engine switch on (IG), power window regulator switch off 11 to 14 V M2-2 (UP) - M2-5 (GND) L - W-B Power window motor up input Engine switch on (IG), power window regulator switch up Below 1 V M2-4 (AUTO) - M2-5 (GND) P - W-B Power window motor auto up or down input Engine switch on (IG), door glass fully open 11 to 14 V M2-4 (AUTO) - M2-5 (GND) P - W-B Power window motor auto up or down input Engine switch on (IG), power window auto up or down function operating Below 1 V M2-4 (AUTO) - M2-5 (GND) P - W-B Power window motor auto up or down input Engine switch on (IG), door glass fully closed 11 to 14 V M2-8 (LED) - M2-5 (GND) V - W-B LED illumination signal Engine switch on (IG) 11 to 14 V M2-8 (LED) - M2-5 (GND) V - W-B LED illumination signal Approximately 43 seconds after the Engine switch is turned off Below 1 V M2-10 (DOWN) - M2-5 (GND) B - W-B Power window motor down input Engine switch on (IG), power window regulator switch off 11 to 14 V M2-10 (DOWN) - M2-5 (GND) B - W-B Power window motor down input Engine switch on (IG), power window regulator switch down Below 1 V If the result is not as specified, the power window regulator switch may have a malfunction.
4. CHECK REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY RH Disconnect the L2 rear power window regulator switch connector. Measure the resistance according to the value(s) in the table below. HINT: Measure the values on the wire harness side with the connector disconnected. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition L2-5 (GND) - Body ground W-B - Body ground Ground Always Below 1 ohms If the result is not as specified, there may be a malfunction in the wire harness side. Reconnect the L2 rear power window regulator switch connector. Measure the voltage according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition L2-2 (UP) - L2-5 (GND) L - W-B Power window motor up input Engine switch on (IG), power window regulator switch off 11 to 14 V L2-2 (UP) - L2-5 (GND) L - W-B Power window motor up input Engine switch on (IG), power window regulator switch up Below 1 V L2-4 (AUTO) - L2-5 (GND) P - W-B Power window motor auto up or down input Engine switch on (IG), door glass fully open 11 to 14 V L2-4 (AUTO) - L2-5 (GND) P - W-B Power window motor auto up or down input Engine switch on (IG), power window auto up or down function operating Below 1 V L2-4 (AUTO) - L2-5 (GND) P - W-B Power window motor auto up or down input Engine switch on (IG), door glass fully closed 11 to 14 V L2-8 (LED) - L2-5 (GND) V - W-B LED illumination signal Engine switch on (IG) 11 to 14 V L2-8 (LED) - L2-5 (GND) V - W-B LED illumination signal Approximately 43 seconds after the Engine switch is turned off Below 1 V L2-10 (DOWN) - L2-5 (GND) B - W-B Power window motor down input Engine switch on (IG), power window regulator switch off 11 to 14 V L2-10 (DOWN) - L2-5 (GND) B - W-B Power window motor down input Engine switch on (IG), power window regulator switch down Below 1 V If the result is not as specified, the rear power window regulator switch may have a malfunction.
5. CHECK FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH Disconnect the K6 power window regulator motor connector. Measure the voltage and resistance according to the value(s) in the table below. HINT: Measure the values on the wire harness side with the connector disconnected. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition K6-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 ohms K6-2 (B) - Body ground R - Body ground Battery power supply Always 11 to 14 V If the result is not as specified, there may be a malfunction in the wire harness side. Reconnect the K6 power window regulator motor connector. Measure the voltage according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition K6-5 (LED) - K6-1 (GND) V - W-B LED illumination signal Engine switch on (IG) 11 to 14 V K6-5 (LED) - K6-1 (GND) V - W-B LED illumination signal Approximately 43 seconds after Engine switch turned off Below 1 V K6-7 (DOWN) - K6-1 (GND) B - W-B Power window motor down output Engine switch on (IG), power window regulator master switch off 11 to 14 V K6-7 (DOWN) - K6-1 (GND) B - W-B Power window motor down output Engine switch on (IG), power window regulator master switch down Below 1 V K6-7 (DOWN) - K6-1 (GND) B - W-B Power window motor down output Engine switch on (IG), door glass fully closed 11 to 14 V K6-7 (DOWN) - K6-1 (GND) B - W-B Power window motor down output Engine switch on (IG), power window auto down function operating Below 1 V K6-7 (DOWN) - K6-1 (GND) B - W-B Power window motor down output Engine switch on (IG), door glass fully open 11 to 14 V K6-10 (UP) - K6-1 (GND) P - W-B Power window motor up output Engine switch on (IG), power window regulator master switch off 11 to 14 V K6-10 (UP) - K6-1 (GND) P - W-B Power window motor up output Engine switch on (IG), power window regulator master switch up Below 1 V K6-10 (UP) - K6-1 (GND) P - W-B Power window motor up output Engine switch on (IG), door glass fully open 11 to 14 V K6-10 (UP) - K6-1 (GND) P - W-B Power window motor up output Engine switch on (IG), power window auto up function operating Below 1 V K6-10 (UP) - K6-1 (GND) P - W-B Power window motor up output Engine switch on (IG), door glass fully closed 11 to 14 V If the result is not as specified, the power window regulator motor may have a malfunction.
6. CHECK FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH Disconnect the J6 power window regulator motor connector. Measure the voltage and resistance according to the value(s) in the table below. HINT: Measure the values on the wire harness side with the connector disconnected. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition J6-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 ohms J6-2 (B) - Body ground G - Body ground Battery power supply Always 11 to 14 V If the result is not as specified, there may be a malfunction in the wire harness side. Reconnect the J6 power window regulator motor connector. Measure the voltage according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition J6-5 (LED) - J6-1 (GND) V - W-B LED illumination signal Engine switch on (IG) 11 to 14 V J6-5 (LED) - J6-1 (GND) V - W-B LED illumination signal Approximately 43 seconds after Engine switch turned off Below 1 V J6-7 (DOWN) - J6-1 (GND) B - W-B Power window motor down output Engine switch on (IG), power window regulator switch off 11 to 14 V J6-7 (DOWN) - J6-1 (GND) B - W-B Power window motor down output Engine switch on (IG), power window regulator switch down Below 1 V J6-7 (DOWN) - J6-1 (GND) B - W-B Power window motor down output Engine switch on (IG), door glass fully closed 11 to 14 V J6-7 (DOWN) - J6-1 (GND) B - W-B Power window motor down output Engine switch on (IG), power window auto down function operating Below 1 V J6-7 (DOWN) - J6-1 (GND) B - W-B Power window motor down output Engine switch on (IG), door glass fully open 11 to 14 V J6-10 (UP) - J6-1 (GND) L - W-B Power window motor up output Engine switch on (IG), power window regulator switch off 11 to 14 V J6-10 (UP) - J6-1 (GND) L - W-B Power window motor up output Engine switch on (IG), power window regulator switch up Below 1 V J6-10 (UP) - J6-1 (GND) L - W-B Power window motor up output Engine switch on (IG), door glass fully open 11 to 14 V J6-10 (UP) - J6-1 (GND) L - W-B Power window motor up output Engine switch on (IG), power window auto up function operating Below 1 V J6-10 (UP) - J6-1 (GND) L - W-B Power window motor up output Engine switch on (IG), door glass fully closed 11 to 14 V If the result is not as specified, the power window regulator motor may have a malfunction.
7. CHECK REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH Disconnect the M4 rear power window regulator motor connector. Measure the voltage and resistance according to the value(s) in the table below. HINT: Measure the values on the wire harness side with the connector disconnected. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition M4-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 ohms M4-2 (B) - Body ground W - Body ground Battery power supply Always 11 to 14 V If the result is not as specified, there may be a malfunction in the wire harness side. Reconnect the M4 rear power window regulator motor connector. Measure the voltage according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition M4-5 (LED) - M4-1 (GND) V - W-B LED illumination signal Engine switch on (IG) 11 to 14 V M4-5 (LED) - M4-1 (GND) V - W-B LED illumination signal Approximately 43 seconds after Engine switch turned off Below 1 V M4-7 (DOWN) - M4-1 (GND) B - W-B Power window motor down input Engine switch on (IG), power window regulator switch off 11 to 14 V M4-7 (DOWN) - M4-1 (GND) B - W-B Power window motor down input Engine switch on (IG), power window regulator switch down Below 1 V M4-7 (DOWN) - M4-1 (GND) B - W-B Power window motor down input Engine switch on (IG), door glass fully closed 11 to 14 V M4-7 (DOWN) - M4-1 (GND) B - W-B Power window motor down input Engine switch on (IG), power window auto down function operating Below 1 V M4-7 (DOWN) - M4-1 (GND) B - W-B Power window motor down input Engine switch on (IG), door glass fully open 11 to 14 V M4-10 (UP) - M4-1 (GND) L - W-B Power window motor up output Engine switch on (IG), power window regulator switch off 11 to 14 V M4-10 (UP) - M4-1 (GND) L - W-B Power window motor up output Engine switch on (IG), power window regulator switch up Below 1 V M4-10 (UP) - M4-1 (GND) L - W-B Power window motor up output Engine switch on (IG), door glass fully open 11 to 14 V M4-10 (UP) - M4-1 (GND) L - W-B Power window motor up output Engine switch on (IG), power window auto up function operating Below 1 V M4-10 (UP) - M4-1 (GND) L - W-B Power window motor up output Engine switch on (IG), door glass fully closed 11 to 14 V If the result is not as specified, the rear power window regulator motor may have a malfunction.
8. CHECK REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH Disconnect the L4 rear window regulator motor connector. Measure the voltage and resistance according to the value(s) in the table below. HINT: Measure the values on the wire harness side with the connector disconnected. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition L4-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 ohms L4-2 (B) - Body ground W - Body ground Battery power supply Always 11 to 14 V If the result is not as specified, there may be a malfunction in the wire harness side. Reconnect the L4 rear power window regulator motor connector. Measure the voltage according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition L4-5 (LED) - L4-1 (GND) V - W-B LED illumination signal Engine switch on (IG) 11 to 14 V L4-5 (LED) - L4-1 (GND) V - W-B LED illumination signal Approximately 43 seconds after Engine switch turned off Below 1 V L4-7 (DOWN) - L4-1 (GND) B - W-B Power window motor down output Engine switch on (IG), power window regulator switch off 11 to 14 V L4-7 (DOWN) - L4-1 (GND) B - W-B Power window motor down output Engine switch on (IG), power window regulator switch down Below 1 V L4-7 (DOWN) - L4-1 (GND) B - W-B Power window motor down output Engine switch on (IG), door glass fully closed 11 to 14 V L4-7 (DOWN) - L4-1 (GND) B - W-B Power window motor down output Engine switch on (IG), power window auto down function operating Below 1 V L4-7 (DOWN) - L4-1 (GND) B - W-B Power window motor down output Engine switch on (IG), door glass fully open 11 to 14 V L4-10 (UP) - L4-1 (GND) L - W-B Power window motor up output Engine switch on (IG), power window regulator switch off 11 to 14 V L4-10 (UP) - L4-1 (GND) L - W-B Power window motor up output Engine switch on (IG), power window regulator switch up Below 1 V L4-10 (UP) - L4-1 (GND) L - W-B Power window motor up output Engine switch on (IG), door glass fully open 11 to 14 V L4-10 (UP) - L4-1 (GND) L - W-B Power window motor up output Engine switch on (IG), power window auto up function operating Below 1 V L4-10 (UP) - L4-1 (GND) L - W-B Power window motor up output Engine switch on (IG), door glass fully closed 11 to 14 V If the result is not as specified, the rear power window regulator motor may have a malfunction.
9. CHECK DRIVER SIDE JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Remove the main body ECU (multiplex network body ECU). Refer to «REMOVAL»(ref-524305-S41918141882013012800000) . Measure the voltage and resistance according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition A-30 (BECU) - Body ground - Battery power supply Always 11 to 14 V A-31 (ALTB) - Body ground - Battery power supply Always 11 to 14 V A-32 (IG) - Body ground - Engine switch power supply Engine switch on (IG) 11 to 14 V A-32 (IG) - Body ground - Engine switch power supply Engine switch off Below 1 V A-29 (ACC) - Body ground - ACC power supply Engine switch on (ACC) 11 to 14 V A-29 (ACC) - Body ground - ACC power supply Engine switch off Below 1 V A-11 (GND1) - Body ground - Ground Always Below 1 ohms G46-3 (GND2) - Body ground W-B - Body ground Ground Always Below 1 ohms If the result is not as specified, there may be a malfunction in the wire harness side. Install the main body ECU (multiplex network body ECU). Refer to «REMOVAL»(ref-524305-S41918141882013012800000) . Measure the voltage according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition 2H-27 (FLCY) - Body ground R - Body ground Front door LH courtesy switch input Front door LH open Below 1 V 2H-27 (FLCY) - Body ground R - Body ground Front door LH courtesy switch input Front door LH closed 11 to 14 V 2D-15 (FRCY) - Body ground B - Body ground Front door RH courtesy switch input Front door RH open Below 1 V 2D-15 (FRCY) - Body ground B - Body ground Front door RH courtesy switch input Front door RH closed 11 to 14 V If the result is not as specified, the main body ECU (multiplex network body ECU) or driver side junction block assembly may have a malfunction.

DTC CHECK / CLEAR

1. CHECK DTC Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / (desired system) / Trouble Codes. Check the details of the DTC(s)
2. CLEAR DTC Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / (desired system) / Trouble Codes. Clear the DTCs.

Scheme 11

Scheme 12

Scheme 13

Scheme 14

1. POWER WINDOW OPERATION IN FAIL-SAFE MODE HINT: If the pulse sensor built into a power window regulator motor malfunctions, the power window control system enters fail-safe mode. The power window control system prohibits the following power window operations when the pulse sensor for the jam protection function has problems and the window position or the learned value is abnormal. MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY Power Window Operation Condition Engine Switch on (IG) Engine Switch Off (Key-off Operation Permitted) Engine Switch Off (Key-off Operation Prohibited) Manual up (Driver side door window) X X - Manual down (Driver side door window) o X - Auto up (Driver side door window) (hold switch in auto up position) o* X - Auto up (Driver side door window) X X - Auto down (Driver side door window) X X - Manual up (Remote switch operation) X X - Manual down (Remote switch operation) X X - Auto up (Remote switch operation) (hold switch in auto up position) X X - Auto up (Remote switch operation) X X - Auto down (Remote switch operation) X X - Key-linked open and close - X X Wireless transmitter-linked open and close - X X Smart interlock - X X Remote Service - X X HINT: o: Operates X: Operation prohibited *: Operates in manual mode without jam protection POWER WINDOW REGULATOR SWITCH ASSEMBLY (FOR FRONT PASSENGER, REAR LH AND REAR RH SIDES) Power Window Operation Condition Engine Switch on (IG) Engine Switch Off (Key-off Operation Permitted) Engine Switch Off (Key-off Operation Prohibited) Manual up X X - Manual down o X - Auto up (hold switch in auto up position) o* X - Auto up X X - Auto down X X - Key-linked open and close - X X Wireless transmitter-linked open and close - X X Smart interlock - X X Remote Service - X X HINT: o: Operates X: Operation prohibited *: Operates in manual mode without jam protection Power window switch LED control HINT: During normal operation (fail-safe is not operating), or during fail-safe mode when there is a pulse sensor malfunction or the window position or learned value is abnormal, the LED illuminates as shown in the illustration. For driver side: For front passenger side, rear LH and rear RH sides: Fail-safe deactivation condition When the pulse sensor is normal, to deactivate fail-safe mode, pull up the power window switch to the auto up position and hold it for at least 1 second to fully close the window from the fully open position. As a result, the auto up/down function will return. Initialization failure HINT: During initialization of the power window regulator motor ECU, when the window position or initialization complete status cannot be properly read from the EEPROM, the power window control system prohibits the operations as follows. MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY Power Window Operation Condition Engine Switch on (IG) Engine Switch Off (Key-off Operation Permitted) Engine Switch Off (Key-off Operation Prohibited) Manual up (Driver side door window) X X - Manual down (Driver side door window) o X - Auto up (Driver side door window) (hold switch in auto up position) o* X - Auto up (Driver side door window) X X - Auto down (Driver side door window) X X - Manual up (Remote switch operation) X X - Manual down (Remote switch operation) X X - Manual up (Remote switch operation) X X - Manual down (Remote switch operation) X X - Auto up (Remote switch operation) (hold switch in auto up position) X X - Auto up (Remote switch operation) X X - Auto down (Remote switch operation) X X - Key-linked open and close - X X Wireless transmitter-linked open and close - X X Smart interlock - X X Remote Service - X X HINT: o: Operates X: Operation prohibited *: Operates in manual mode without jam protection POWER WINDOW REGULATOR SWITCH ASSEMBLY (FOR FRONT PASSENGER, REAR LH AND REAR RH SIDES) Power Window Operation Condition Engine Switch on (IG) Engine Switch Off (Key-off Operation Permitted) Engine Switch Off (Key-off Operation Prohibited) Manual up X X - Manual down o X - Auto up (hold switch in auto up position) o* X - Auto up X X - Auto down X X - Key-linked open and close - X X Wireless transmitter-linked open and close - X X Smart interlock - X X Remote Service - X X HINT: o: Operates X: Operation prohibited *: Operates in manual mode without jam protection Power window switch LED control HINT: During initialization of the power window regulator motor ECU, when the window position or initialization complete status cannot be properly read from the EEPROM during fail-safe mode, the LED illuminates as shown in the illustration. For driver side: For front passenger side, rear LH and rear RH sides: LIN communication failure HINT: If the LIN communication line malfunctions (communication stop), the power window control system prohibits the operations as follows. MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY Power Window Operation Condition Engine Switch on (IG) Manual up o* Manual down o Auto up (hold switch in auto up position) - Auto up - Auto down - HINT: o: Operates X: Operation prohibited *: Jam protection can operate. Remote up/down function does not operate. POWER WINDOW REGULATOR SWITCH ASSEMBLY (FOR FRONT PASSENGER, REAR LH AND REAR RH SIDES) Power Window Operation Condition Engine Switch on (IG) Manual up o* Manual down o Auto up (hold switch in auto up position) o* Auto up o* Auto down o HINT: o: Operates X: Operation prohibited *: Jam protection can operate. LIN communication failure and pulse sensor failure HINT: If the LIN communication line malfunctions (communication stop) and the pulse sensor for the jam protection function has problems, the power window control system prohibits the operations as follows. MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY Power Window Operation Condition Always Manual up X Manual down X Auto up (hold switch in auto up position) X Auto up X Auto down X HINT: o: Operates X: Operation prohibited Driver door window: When the jam protection function does not operate due to a LIN communication failure, the manual up and auto up functions will not operate. Remote switch operation is not operative during a LIN communication failure. POWER WINDOW REGULATOR SWITCH ASSEMBLY (FOR FRONT PASSENGER, REAR LH AND REAR RH SIDES) Power Window Operation Condition Always Manual up X Manual down X Auto up (hold switch in auto up position) X Auto up X Auto down X HINT: o: Operates X: Operation prohibited LIN communication failure and abnormal window position learned value or initialization failure HINT: If the LIN communication line malfunctions (communication stop) and the window position or the learned value is abnormal, the power window control system prohibits the operations as follows. MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY Power Window Operation Condition Always Manual up o* Manual down o Auto up (hold switch in auto up position) - Auto up - Auto down - HINT: o: Operates *: Jam protection can operate and window reverses upon reaching the fully closed position. Remote switch operation is not operative during a LIN communication failure. POWER WINDOW REGULATOR SWITCH ASSEMBLY (FOR FRONT PASSENGER, REAR LH AND REAR RH SIDES) Power Window Operation Condition Always Manual up o* Manual down o Auto up (hold switch in auto up position) o* Auto up X Auto down X HINT: o: Operates X: Operation prohibited *: Jam protection can operate and window reverses upon reaching the fully closed position.

DATA LIST / ACTIVE TEST

1. READ DATA LIST NOTE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not. HINT: Using the Techstream to read the Data List allows values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / (desired system) / Data List. According to the display on the Techstream, read the Data List. MASTER SWITCH Tester Display Measurement Item/Range Normal Condition Diagnostic Note D Door P/W Auto SW Driver side power window auto up/down signal / ON or OFF ON: Driver side power window auto up/down switch on power window regulator master switch operated OFF: Driver side power window auto up/down switch on power window regulator master switch not operated - P Door P/W Auto SW Front passenger side power window remote auto up/down signal / ON or OFF ON: Front passenger side power window remote auto up/down switch on power window regulator master switch operated OFF: Front passenger side power window remote auto up/down switch on power window regulator master switch not operated - RR Door P/W Auto SW Rear power window RH remote auto up/down signal / ON or OFF ON: Rear power window RH remote auto up/down switch on power window regulator master switch operated OFF: Rear power window RH remote auto up/down switch on power window regulator master switch not operated - RL Door P/W Auto SW Rear power window LH remote auto up/down signal / ON or OFF ON: Rear power window LH remote auto up/down switch on power window regulator master switch operated OFF: Rear power window LH remote auto up/down switch on power window regulator master switch not operated - P Door P/W Up SW Front passenger side power window remote manual up signal / ON or OFF ON: Front passenger side power window remote manual up switch on power window regulator master switch operated OFF: Front passenger side power window remote manual up switch on power window regulator master switch not operated - RR Door P/W up switch Rear power window RH remote manual up signal / ON or OFF ON: Rear power window RH remote manual up switch on power window regulator master switch operated OFF: Rear power window RH remote manual up switch on power window regulator master switch not operated - RL Door P/W up switch Rear power window LH remote manual up signal / ON or OFF ON: Rear power window LH remote manual up switch on power window regulator master switch operated OFF: Rear power window LH remote manual up switch on power window regulator master switch not operated - P Door P/W Down SW Front passenger side power window remote manual down signal / ON or OFF ON: Front passenger side power window remote manual down switch on power window regulator master switch operated OFF: Front passenger side power window remote manual down switch on power window regulator master switch not operated - RR Door P/W Down SW Rear power window RH remote manual down signal / ON or OFF ON: Rear power window RH remote manual down switch on power window regulator master switch operated OFF: Rear power window RH remote manual down switch on power window regulator master switch not operated - RL Door P/W Down SW Rear power window LH remote manual down signal / ON or OFF ON: Rear power window LH remote manual down switch on power window regulator master switch operated OFF: Rear power window LH remote manual down switch on power window regulator master switch not operated - Window Lock Switch Status Power window lock switch / ON or OFF ON: Window lock switch LOCK position OFF: Window lock switch UNLOCK position - Number of Trouble Codes Number of trouble codes / Min.: 0, Max.: 255 Number of DTCs stored - D-DOOR MOTOR Tester Display Measurement Item/Range Normal Condition Diagnostic Note D Door P/W Auto SW Driver side power window auto up/down signal / ON or OFF ON: Driver side power window auto up/down switch operated OFF: Driver side power window auto up/down switch not operated - D Door P/W Up SW Driver side power window manual up signal / ON or OFF ON: Driver side power window manual up switch operated OFF: Driver side power window manual up switch not operated - D Door P/W Down SW Driver side power window manual down signal / ON or OFF ON: Driver side power window manual down switch operated OFF: Driver side power window manual down switch not operated - Glass Position (Close-1/4) Jam protection status of window glass within range of fully closed to 1/4 open position / OK or Caution OK: Motor operates normally between fully closed and 1/4 open positions Caution: Jam protection function operating due to detection of foreign object or irregular movement - Glass Position (1/4-2/4) Jam protection status of window glass within range of 1/4 open to 1/2 open position / OK or Caution OK: Motor operates normally between 1/4 open and 1/2 open positions Caution: Jam protection function operating due to detection of foreign object or irregular movement - Glass Position (2/4-3/4) Jam protection status of window glass within range of 1/2 open to 3/4 open position / OK or Caution OK: Motor operates normally between 1/2 open and 3/4 open positions Caution: Jam protection function operating due to detection of foreign object or irregular movement - Glass Position (3/4-Open) Jam protection status of window glass within range of 3/4 open to fully open position / OK or Caution OK: Motor operates normally between 3/4 open and fully open positions Caution: Jam protection function operating due to detection of foreign object or irregular movement - Number of Trouble Codes Number of trouble codes / Min.: 0, Max.: 255 Number of DTCs stored - P-DOOR MOTOR Tester Display Measurement Item/Range Normal Condition Diagnostic Note P Door P/W Auto SW Front passenger side power window auto up/down signal / ON or OFF ON: Front passenger side power window auto up/down switch operated OFF: Front passenger side power window auto up/down switch not operated - P Door P/W Up SW Front passenger side power window manual up signal / ON or OFF ON: Front passenger side power window manual up switch operated OFF: Front passenger side power window manual up switch not operated - P Door P/W Down SW Front passenger side power window manual down signal / ON or OFF ON: Front passenger side power window manual down switch operated OFF: Front passenger side power window manual down with not operated - Glass Position (Close-1/4) Jam protection status of window glass within range of fully closed to 1/4 open position / OK or Caution OK: Motor operates normally between fully closed and 1/4 open positions Caution: Jam protection function operating due to detection of foreign object or irregular movement - Glass Position (1/4-2/4) Jam protection status of window glass within range of 1/4 open to 1/2 open position / OK or Caution OK: Motor operates normally between 1/4 open and 1/2 open positions Caution: Jam protection function operates due to detection of foreign object or irregular movement - Glass Position (2/4-3/4) Jam protection status of window glass within range of 1/2 open to 3/4 open position / OK or Caution OK: Motor operates normally between 1/2 open and 3/4 open positions Caution: Jam protection function operating due to detection of foreign object or irregular movement - Glass Position (3/4-Open) Jam protection status of window glass within range of 3/4 open to fully open position / OK or Caution OK: Motor operates normally between 3/4 open and fully open positions Caution: Jam protection function operating due to detection of foreign object or irregular movement - P Window Auto Up Auto up operation using the power window regulator switch assembly (for front passenger side) / Avail or Not Avl Customization status displayed - P Window Auto Up From Driver Remote auto up operation using the multiplex network master switch assembly / Avail or Not Avl Customization status displayed - Number of Trouble Codes Number of trouble codes / Min.: 0, Max.: 255 Number of DTCs stored - RL-DOOR MOTOR Tester Display Measurement Item/Range Normal Condition Diagnostic Note RL Door P/W Auto SW Rear power window LH auto up/down signal / ON or OFF ON: Rear power window LH auto up/down switch operated OFF: Rear power window LH auto up/down switch not operated - RL Door P/W Up SW Rear power window LH manual up signal / ON or OFF ON: Rear power window LH manual up switch operated OFF: Rear power window LH manual up switch not operated - RL Door P/W Down SW Rear power window LH manual down signal / ON or OFF ON: Rear power window LH manual down switch operated OFF: Rear power window LH manual down switch not operated - Glass Position (Close-1/4) Jam protection status of window glass within range of fully closed to 1/4 open position / OK or Caution OK: Motor operates normally between fully closed and 1/4 open positions Caution: Jam protection function operating due to detection of foreign object or irregular movement - Glass Position (1/4-2/4) Jam protection status of window glass within range of 1/4 open to 1/2 open position / OK or Caution OK: Motor operates normally between 1/4 open and 1/2 open positions Caution: Jam protection function operating due to detection of foreign object or irregular movement - Glass Position (2/4-3/4) Jam protection status of window glass within range of 1/2 open to 3/4 open position / OK or Caution OK: Motor operates normally between 1/2 open and 3/4 open positions Caution: Jam protection function operating due to detection of foreign object or irregular movement - Glass Position (3/4-Open) Jam protection status of window glass within range of 3/4 open to fully open position / OK or Caution OK: Motor operates normally between 3/4 open and fully open positions Caution: Jam protection function operating due to detection of foreign object or irregular movement - RL Window Auto Up Auto up operation using the power window regulator switch assembly (for rear LH side) / Avail or Not Avl Customization status displayed - RL Window Auto Up From Driver Remote auto up operation using the multiplex network master switch assembly / Avail or Not Avl Customization status displayed - Number of Trouble Codes Number of trouble codes / Min.: 0, Max.: 255 Number of DTCs stored - RR-DOOR MOTOR Tester Display Measurement Item/Range Normal Condition Diagnostic Note RR Door P/W Auto SW Rear power window RH auto up/down signal / ON or OFF ON: Rear power window RH auto up/down switch operated OFF: Rear power window RH auto up/down switch not operated - RR Door P/W Up SW Rear power window RH manual up signal / ON or OFF ON: Rear power window RH manual up switch operated OFF: Rear power window RH manual up switch not operated - RR Door P/W Down SW Rear power window RH manual down signal / ON or OFF ON: Rear power window RH manual down switch operated OFF: Rear power window RH manual down switch not operated - Glass Position (Close-1/4) Jam protection status of window glass within range of fully closed to 1/4 open position / OK or Caution OK: Motor operates normally between fully closed and 1/4 open positions Caution: Jam protection function operating due to detection of foreign object or irregular movement - Glass Position (1/4-2/4) Jam protection status of window glass within range of 1/4 open to 1/2 open position / OK or Caution OK: Motor operates normally between 1/4 open and 1/2 open positions Caution: Jam protection function operating due to detection of foreign object or irregular movement - Glass Position (2/4-3/4) Jam protection status of window glass within range of 1/2 open to 3/4 open position / OK or Caution OK: Motor operates normally between 1/2 open and 3/4 open positions Caution: Jam protection function operating due to detection of foreign object or irregular movement - Glass Position (3/4-Open) Jam protection status of window glass within range of 3/4 open to fully open position / OK or Caution OK: Motor operates normally between 3/4 open and fully open positions Caution: Jam protection function operating due to detection of foreign object or irregular movement - RR Window Auto Up Auto up operation using the power window regulator switch assembly (for rear RH side) / Avail or Not Avl Customization status displayed - RR Window Auto Up From Driver Remote auto up operation using the multiplex network master switch assembly / Avail or Not Avl Customization status displayed - Number of Trouble Codes Number of trouble codes / Min.: 0, Max.: 255 Number of DTCs stored - MAIN BODY Tester Display Measurement Item/Range Normal Condition Diagnostic Note FL Door Courtesy Front door courtesy light switch LH signal / ON or OFF ON: Front door LH closed OFF: Front door LH open - FR Door Courtesy Front door courtesy light switch RH signal / ON or OFF ON: Front door RH closed OFF: Front door RH open
2. PERFORM ACTIVE TEST HINT: Using the Techstream to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrusive functional inspection can be very useful because intermittent operation may be discovered before parts or wiring is disturbed. Performing Active Tests early in troubleshooting is one way to save diagnostic time. Data List information can be displayed while performing Active Tests. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / (desired system) / Active Test. According to the display on the Techstream, perform the Active Test. WARNING: Be careful to avoid injuries as this test causes vehicle parts to move. During the Active Test, the jam protection function does not operate. D-DOOR MOTOR Tester Display Test Part Control Range Diagnostic Note Power Window Driver side power window OFF/UP/DOWN - P-DOOR MOTOR Tester Display Test Part Control Range Diagnostic Note Power Window Passenger side power window OFF/UP/DOWN - RL-DOOR MOTOR Tester Display Test Part Control Range Diagnostic Note Power Window Rear LH side power window OFF/UP/DOWN - RR-DOOR MOTOR Tester Display Test Part Control Range Diagnostic Note Power Window Rear RH side power window OFF/UP/DOWN

DIAGNOSTIC TROUBLE CODE CHART

HINT

If a trouble code is output during the DTC check, inspect the trouble areas listed for that code. For details of the code, refer to the "See page" below.

POWER WINDOW CONTROL SYSTEM