Power Window (Diagnostics - Introduction): Diagnosis Lexus GS III facelift

HOW TO PROCEED WITH TROUBLESHOOTING

HINT

1. Use the following procedure to troubleshoot the power window control system.
2. The Techstream should be used in steps 4, 5 and 7.

1. VEHICLE BROUGHT TO WORKSHOP NEXT: Go to next step
2. CUSTOMER PROBLEM ANALYSIS CHECK In troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred. Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases. The following 5 items are important points in the problem analysis: What Vehicle model, system name When Date, time, occurrence frequency Where Road conditions Under what conditions? Driving conditions, weather conditions How did it happen? Problem symptoms NEXT: Go to next step
3. INSPECT BATTERY VOLTAGE Measure the battery voltage. Standard voltage 11 to 14 V If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step. NEXT: Go to next step
4. INSPECT COMMUNICATION FUNCTION OF MULTIPLEX COMMUNICATION SYSTEM (BEAN) Use the Techstream to check if the Multiplex Communication System (MPX) is functioning normally. Result Result Proceed to MPX DTC is not output A MPX DTC is output B B --> GO TO MULTIPLEX COMMUNICATION SYSTEM Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-382788-S34364788102011012800000) A: Go to next step
5. CHECK FOR DTC Check for DTCs and note any codes that are output. Refer to «DTC CHECK / CLEAR»(ref-382859-S30889851462011012800000) . Delete DTCs. Recheck for DTCs. Result Result Proceed to No DTCs output A DTCs output B B --> GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-382859-S34043908112011012800000) A: Go to next step
6. PROBLEM SYMPTOMS TABLE Refer to «PROBLEM SYMPTOMS TABLE»(ref-382859-S01202666942011012800000) . Result Result Proceed to Fault is not listed in problem symptoms table A Fault is 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-382859-S35255195432011012800000) Data list/Active test. Refer to «DATA LIST / ACTIVE TEST»(ref-382859-S15470265922011012800000) Terminals of ECU. Refer to «TERMINALS OF ECU»(ref-382859-S41640370062011012800000) NEXT: Go to next step
8. ADJUST, REPAIR OR REPLACE NEXT: Go to next step
9. RESET POWER WINDOW MOTOR If the power window master switch AUTO light is blinking, reset the power window regulator motor. Refer to «INITIALIZATION»(ref-382859-S18012027362011012800000) . NEXT: Go to next step
10. CONFIRMATION TEST NEXT --> END

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1. CHECK WINDOW LOCK SWITCH Check that the front passenger side power window switch and rear window switches are disabled when the window lock switch of the power window master switch is pressed. OK Front passenger side power window switch and rear window switches are disabled. Check that the front passenger side power window switch and rear window switches operate when the window lock switch is pressed again. OK Front passenger side power window switch and rear window switches can be operated.
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 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 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 and rear power windows operate as follows: OK Condition Master Switch Switch Operation Power Window Engine switch on (IG) Window lock switch off Front passenger side Pulled up UP (Closes) Pushed down DOWN (Opens) Rear LH side Pulled up UP (Closes) Pushed down DOWN (Opens) Rear RH side Pulled up UP (Closes) Pushed down DOWN (Opens)
5. CHECK REMOTE AUTO UP / DOWN FUNCTION Check that the front passenger side and rear power windows operate as follows: OK Condition Master 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)
6. CHECK POWER WINDOW OPERATION FUNCTION AFTER ENGINE SWITCH IS TURNED OFF Check that all the power windows can be operated with the power window master switch after the engine switch is turned off. Check that the key-off operation function does not operate after the driver door or front passenger door is opened. Check that all the power windows cannot be operated after more than approximately 45 seconds have elapsed since the engine switch was turned off.
7. CHECK TRANSMITTER-LINKED FUNCTION 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 STOP
8. CHECK KEY-LINKED FUNCTION USING DRIVER SIDE DOOR KEY CYLINDER 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 Turned (LOCK) for more than 2.3 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 Turned (UNLOCK) for more than 2.3 seconds DOWN (Opens) No key is inside vehicle, and all doors are closed Returned to neutral position STOP
9. CHECK JAM PROTECTION FUNCTION Check the basic function. WARNING: The jam protection function is operative during both the AUTO UP and MANUAL UP operation. Do not put your fingers between the door frame and door glass to check functions. 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 operation while the engine is running or the engine switch on (IG), and also after the key is removed from the door key cylinder. Fully open the window. Place a check jig measuring 4 to 10 mm (0.16 to 0.40 in.) thick near the window fully closed position. Operate the AUTO UP or MANUAL UP function to check that the power window goes down before 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 50 mm (1.97 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 have elapsed. 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 (power window master switch). Check that the LED located on the power window switch illuminates when the engine switch on (IG). Check the LED illumination (power window switch). Check that the LED located on the power window switch illuminates when the engine switch on (IG).

PROBLEM SYMPTOMS TABLE

Power Window Control System

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1. CHECK POWER WINDOW ECU (for Driver Side) Disconnect the M11 ECU connector. Measure the voltage and resistance according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition M11-1 (E) - Body ground BR - Body ground Ground Always Below 1 ohms M11-2 (B) - M11-1 (E) GR - BR Power supply Always 11 to 14 V If the result is not as specified, there may be a malfunction in the wire harness. Reconnect the M11 ECU connector. Measure the voltage according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition M11-10 (UP1) - M11-1 (E) R - BR Power window UP operation Engine switch on (IG), master switch OFF --> UP 11 to 14 V --> Below 1 V M11-10 (UP1) - M11-1 (E) R - BR Power window UP operation Engine switch on (IG), door glass fully open --> power window AUTO UP operation --> door glass fully closed 11 to 14 V --> Below 1 V --> 11 to 14 V M11-7 (DWN1) - M11-1 (E) G - BR Power window DOWN operation Engine switch on (IG), master switch OFF --> DOWN 11 to 14 V --> Below 1 V M11-7 (DWN1) - M11-1 (E) G - BR Power window DOWN operation Engine switch on (IG), door glass fully closed --> power window AUTO DOWN operation --> door glass fully open 11 to 14 V --> Below 1 V --> 11 to 14 V If the result is not as specified, the power window regulator motor may have a malfunction.
2. CHECK POWER WINDOW ECU (for Front Passenger Side) Disconnect the M5 ECU connector. Measure the voltage and resistance according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition M5-1 (E) - Body ground BR - Body ground Ground Always Below 1 ohms M5-2 (B) - M5-1 (E) BE - BR Power supply Always 11 to 14 V If the result is not as specified, there may be a malfunction in the wire harness. Reconnect the M5 ECU connector. Measure the voltage according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition M5-10 (UP1) - M5-1 (E) R - BR Power window UP operation Engine switch on (IG), switch OFF --> UP 11 to 14 V --> Below 1 V M5-10 (UP1) - M5-1 (E) R - BR Power window UP operation Engine switch on (IG), door glass fully open --> power window AUTO UP operation --> door glass fully closed 11 to 14 V --> Below 1 V --> 11 to 14 V M5-7 (DWN1) - M5-1 (E) G - BR Power window DOWN operation Engine switch on (IG), switch OFF --> DOWN 11 to 14 V --> Below 1 V M5-7 (DWN1) - M5-1 (E) G - BR Power window DOWN operation Engine switch on (IG), door glass fully closed --> power window AUTO DOWN operation --> door glass fully open 11 to 14 V --> Below 1 V --> 11 to 14 V If the result is not as specified, the power window regulator motor may have a malfunction.
3. CHECK POWER WINDOW ECU (for Rear LH Side) Disconnect the O9 ECU connector. Measure the voltage and resistance according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition O9-1 (E) - Body ground BR - Body ground Ground Always Below 1 ohms O9-2 (B) - O9-1 (E) GR - BR Power supply Always 11 to 14 V If the result is not as specified, there may be a malfunction in the wire harness. Reconnect the O9 ECU connector. Measure the voltage according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition O9-10 (UP1) - O9-1 (E) R - BR Power window UP operation Engine switch on (IG), switch OFF --> UP 11 to 14 V --> Below 1 V O9-10 (UP1) - O9-1 (E) R - BR Power window UP operation Engine switch on (IG), door glass fully open --> power window AUTO UP operation --> door glass fully closed 11 to 14 V --> Below 1 V --> 11 to 14 V O9-7 (DWN1) - O9-1 (E) G - BR Power window DOWN operation Engine switch on (IG), switch OFF --> DOWN 11 to 14 V --> Below 1 V O9-7 (DWN1) - O9-1 (E) G - BR Power window DOWN operation Engine switch on (IG), door glass fully closed --> power window AUTO DOWN operation --> door glass fully open 11 to 14 V --> Below 1 V --> 11 to 14 V If the result is not as specified, the power window regulator motor may have a malfunction.
4. CHECK POWER WINDOW ECU (for Rear RH Side) Disconnect the O4 ECU connector. Measure the voltage and resistance according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition O4-1 (E) - Body ground BR - Body ground Ground Always Below 1 ohms O4-2 (B) - O4-1 (E) L - BR Power supply Always 11 to 14 V If the result is not as specified, there may be a malfunction in the wire harness. Reconnect the O4 ECU connector. Measure the voltage according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition O4-10 (UP1) - O4-1 (E) R - BR Power window UP operation Engine switch on (IG), switch OFF --> UP 11 to 14 V --> Below 1 V O4-10 (UP1) - O4-1 (E) R - BR Power window UP operation Engine switch on (IG), door glass fully open --> power window AUTO UP operation --> door glass fully closed 11 to 14 V --> Below 1 V --> 11 to 14 V O4-7 (DWN1) - O4-1 (E) G - BR Power window DOWN operation Engine switch on (IG), switch OFF --> DOWN 11 to 14 V --> Below 1 V O4-7 (DWN1) - O4-1 (E) G - BR Power window DOWN operation Engine switch on (IG), door glass fully closed --> power window AUTO DOWN operation --> door glass fully open 11 to 14 V --> Below 1 V --> 11 to 14 V If the result is not as specified, the power window regulator motor may have a malfunction.
5. CHECK POWER WINDOW MASTER SWITCH Disconnect the Q13 master switch connector. Measure the resistance and voltage according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition Q13-12 (E) - Body ground W-B - Body ground Ground Always Below 1 ohms Q13-15 (CPUB) - Q13-12 (E) P - W-B Power supply Always 11 to 14 V Q13-18 (SIG) - Q13-12 (E) V - W-B Power supply Engine switch off --> on (IG) Below 1 V --> 11 to 14 V If the result is not as specified, there may be a malfunction on the wire harness side. Reconnect the Q13 master switch connector. Measure the voltage according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition Q13-20 (U) - Q13-12 (E) R - W-B Power window UP operation Engine switch on (IG), switch OFF --> UP 11 to 14 V --> Below 1 V Q13-20 (U) - Q13-12 (E) R - W-B Power window UP operation Engine switch on (IG), door glass fully open --> power window AUTO UP operation --> door glass fully closed 11 to 14 V --> Below 1 V --> 11 to 14 V Q13-16 (D) - Q13-12 (E) G - W-B Power window DOWN operation Engine switch on (IG), switch OFF --> DOWN 11 to 14 V --> Below 1 V Q13-16 (D) - Q13-12 (E) G - W-B Power window DOWN operation Engine switch on (IG), door glass fully closed --> power window AUTO DOWN operation --> door glass fully open 11 to 14 V --> Below 1 V --> 11 to 14 V Q13-11 (LED) - Q13-12 (E) SB - W-B Indicator light operation 45 seconds after the engine switch off Below 1 V Q13-11 (LED) - Q13-12 (E) SB - W-B Indicator light operation Engine switch on (IG), window lock switch is unlocked 11 to 14 V If the result is not as specified, the master switch may be malfunctioning.
6. CHECK POWER WINDOW REGULATOR SWITCH ASSEMBLY (for Front Passenger Side) Disconnect the Q6 switch connector. Measure the resistance according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition Q6-5 (E) - Body ground W-B - Body ground Ground Always Below 1 ohms If the result is not as specified, there may be a malfunction on the wire harness side. Reconnect the Q6 switch connector. Measure the voltage according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition Q6-2 (U) - Q6-5 (E) R - W-B Power window UP operation Engine switch on (IG), switch OFF --> UP 11 to 14 V --> Below 1 V Q6-10 (D) - Q6-5 (E) G - W-B Power window DOWN operation Engine switch on (IG), switch OFF --> DOWN 11 to 14 V --> Below 1 V Q6-4 (A) - Q6-5 (E) B - W-B Power window UP operation Engine switch on (IG), door glass fully open --> power window AUTO UP operation --> door glass fully closed 11 to 14 V --> Below 1 V --> 11 to 14 V Q6-4 (A) - Q6-5 (E) B - W-B Power window DOWN operation Engine switch on (IG), door glass fully closed --> power window AUTO DOWN operation --> door glass fully open 11 to 14 V --> Below 1 V --> 11 to 14 V Q6-8 (LED) - Q6-5 (E) BR - W-B Indicator light operation 45 seconds after the engine switch off Below 1 V Q6-8 (LED) - Q6-5 (E) BR - W-B Indicator light operation Engine switch on (IG), window lock switch is unlocked 11 to 14 V If the result is not as specified, the switch may be malfunctioning.
7. CHECK POWER WINDOW REGULATOR SWITCH ASSEMBLY (for Rear LH Side) Disconnect the S5 switch connector. Measure the resistance according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition S5-5 (E) - Body ground W-B - Body ground Ground Always Below 1 ohms If the result is not as specified, there may be a malfunction on the wire harness side. Reconnect the S5 switch connector. Measure the voltage according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition S5-2 (U) - S5-5 (E) SB - W-B Power window UP operation Engine switch on (IG), switch OFF --> UP 11 to 14 V --> Below 1 V S5-10 (D) - S5-5 (E) G - W-B Power window DOWN operation Engine switch on (IG), switch OFF --> DOWN 11 to 14 V --> Below 1 V S5-4 (A) - S5-5 (E) P - W-B Power window UP operation Engine switch on (IG), door glass fully open --> power window AUTO UP operation --> door glass fully closed 11 to 14 V --> Below 1 V --> 11 to 14 V S5-4 (A) - S5-5 (E) P - W-B Power window DOWN operation Engine switch on (IG), door glass fully closed --> power window AUTO DOWN operation --> door glass fully open 11 to 14 V --> Below 1 V --> 11 to 14 V S5-8 (LED) - S5-5 (E) W - W-B Indicator light operation 45 seconds after the engine switch off Below 1 V S5-8 (LED) - S5-5 (E) W - W-B Indicator light operation Engine switch on (IG), window lock switch is unlocked 11 to 14 V If the result is not as specified, the switch may be malfunctioning.
8. CHECK POWER WINDOW REGULATOR SWITCH ASSEMBLY (for Rear RH Side) Disconnect the S1 switch connector. Measure the resistance according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition S1-5 (E) - Body ground W-B - Body ground Ground Always Below 1 ohms If the result is not as specified, there may be a malfunction on the wire harness side. Reconnect the S1 switch connector. Measure the voltage according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition S1-2 (U) - S1-5 (E) SB - W-B Power window UP operation Engine switch on (IG), switch OFF --> UP 11 to 14 V --> Below 1 V S1-10 (D) - S1-5 (E) G - W-B Power window DOWN operation Engine switch on (IG), switch OFF --> DOWN 11 to 14 V --> Below 1 V S1-4 (A) - S1-5 (E) B - W-B Power window UP operation Engine switch on (IG), door glass fully open --> power window AUTO UP operation --> door glass fully closed 11 to 14 V --> Below 1 V --> 11 to 14 V S1-4 (A) - S1-5 (E) B - W-B Power window DOWN operation Engine switch on (IG), door glass fully closed --> power window AUTO DOWN operation --> door glass fully open 11 to 14 V --> Below 1 V --> 11 to 14 V S1-8 (LED) - S1-5 (E) BR - W-B Indicator light operation 45 seconds after the engine switch off Below 1 V S1-8 (LED) - S1-5 (E) BR - W-B Indicator light operation Engine switch on (IG), window lock switch is unlocked 11 to 14 V If the result is not as specified, the switch may be malfunctioning.
9. CHECK FRONT DOOR ECU (for Driver Side) Disconnect the M9 and M10 ECU connectors. Measure the resistance and voltage according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition M9-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 ohms M9-3 (SIG) - M9-1 (GND) Y - W-B Ignition power supply Engine switch off --> on (IG) Below 1 V --> 11 to 14 V M9-4 (CPUB) - M9-1 (GND) LG - W-B Power supply Always 11 to 14 V M9-6 (BDR) - M9-1 (GND) L - W-B Power supply Always 11 to 14 V If the result is not as specified, there may be a malfunction on the wire harness side. Reconnect the M9 and M10 ECU connectors. Measure the voltage according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition M9-2 (PWE) - Body ground BR - Body ground Ground Always Below 1 V M9-5 (BDRJ) - M9-1 (GND) GR - W-B +B power output Always 11 to 14 V M9-10 (SIGJ) - M9-1 (GND) V - W-B Ignition power supply output Engine switch off --> on (IG) Below 1 V --> 11 to 14 V If the result is not as specified, the ECU may be malfunctioning.
10. CHECK FRONT DOOR ECU (for Front Passenger Side) Disconnect the M4 and M3 ECU connectors. Measure the resistance and voltage according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition M4-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 ohms M4-3 (SIG) - M4-1 (GND) L - W-B Ignition power supply Engine switch off --> on (IG) Below 1 V --> 11 to 14 V M4-4 (CPUB) - M4-1 (GND) LG - W-B Power supply Always 11 to 14 V M4-6 (BDR) - M4-1 (GND) L - W-B Power supply Always 11 to 14 V If the result is not as specified, there may be a malfunction on the wire harness side. Reconnect the M4 and M3 ECU connectors. Measure the voltage according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition M4-2 (PWE) - Body ground BR - Body ground Ground Always Below 1 V M4-5 (BDRJ) - M4-1 (GND) BE - W-B +B power output Always 11 to 14 V If the result is not as specified, the ECU may be malfunctioning.
11. CHECK FRONT DOOR ECU (for Rear LH Side) Disconnect the O7 and O8 ECU connectors. Measure the resistance and voltage according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition O7-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 ohms O7-3 (SIG) - O7-1 (GND) G - W-B Ignition power supply Engine switch off --> on (IG) Below 1 V --> 11 to 14 V O7-4 (CPUB) - O7-1 (GND) BR - W-B Power supply Always 11 to 14 V O7-6 (BDR) - O7-1 (GND) L - W-B Power supply Always 11 to 14 V If the result is not as specified, there may be a malfunction on the wire harness side. Reconnect the O7 and O8 ECU connectors. Measure the voltage according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition O7-2 (PWE) - Body ground BR - Body ground Ground Always Below 1 V O7-5 (BDRJ) - O7-1 (GND) GR - W-B +B power output Always 11 to 14 V If the result is not as specified, the ECU may be malfunctioning.
12. CHECK FRONT DOOR ECU (for Rear RH Side) Disconnect the O2 and O3 ECU connectors. Measure the resistance and voltage according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition O3-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 ohms O3-3 (SIG) - O3-1 (GND) L - W-B Ignition power supply Engine switch off --> on (IG) Below 1 V --> 11 to 14 V O3-4 (CPUB) - O3-1 (GND) G - W-B Power supply Always 11 to 14 V O3-6 (BDR) - O3-1 (GND) L - W-B Power supply Always 11 to 14 V If the result is not as specified, there may be a malfunction on the wire harness side. Reconnect the O2 and O3 ECU connectors. Measure the voltage according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition O3-2 (PWE) - Body ground BR - Body ground Ground Always Below 1 V O3-5 (BDRJ) - O3-1 (GND) L - W-B +B power output Always 11 to 14 V If the result is not as specified, the ECU may be malfunctioning.
13. CHECK BODY ECU (COWL SIDE JUNCTION BLOCK RH) Disconnect the DK and DA junction block connectors. Disconnect the U1, K68 and K67 ECU connectors. Measure the voltage and resistance according to value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition DK-5 (BECU) - Body ground G-R - Body ground Battery power supply Always 11 to 14 V U1-14 (DCTY) - Body ground R - Body ground Driver side door courtesy light switch input Driver side door is open --> close Below 1 ohms --> 10 kohms or higher K68-23 (PCTY) - Body ground R - Body ground Front passenger side door courtesy light switch input Front passenger side door is open --> close Below 1 ohms --> 10 kohms or higher U1-16 (RCTY) - Body ground L - Body ground Rear RH side door courtesy light switch input Rear RH side door is open --> close Below 1 ohms --> 10 kohms or higher DA-11 (LCTY) - Body ground G - Body ground Rear LH side door courtesy light switch input Rear LH side door is open --> close Below 1 ohms --> 10 kohms or higher If the result is not as specified, the wire harness side may have a malfunction.

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1. DESCRIPTION The power window control system data can be read from the Data Link Connector 3 (DLC3) of the vehicle. When the system seems to be malfunctioning, use the Techstream to check for malfunctions and perform repairs.
2. CHECK DLC3 The ECU uses ISO 15765-4 for communication. The terminal arrangement of the DLC3 complies with SAE J1962 and matches the ISO 15765-4 format. Symbols (Terminal No.) Terminal Description Condition Specified Condition SIL (7) - SG (5) Bus "+" line During transmission Pulse generation CG (4) - Body ground Chassis ground Always Below 1 ohms SG (5) - Body ground Signal ground Always Below 1 ohms BAT (16) - Body ground Battery positive Always 10 to 14 V CANH (6) - CANL (14) CAN bus line Engine switch off* 54 to 69 ohms CANH (6) - CG (4) HIGH-level CAN bus line Engine switch off* 200 ohms or more CANL (14) - CG (4) LOW-level CAN bus line Engine switch off* 200 ohms or more CANH (6) - BAT (16) HIGH-level CAN bus line Engine switch off* 6 kohms or more CANL (14) - BAT (16) LOW-level CAN bus line Engine switch off* 6 kohms or more NOTE: *: Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not operate the engine switch, any other switches or the door. If the result is not as specified, the DLC3 may have a malfunction. Repair or replace the harness and connector. Connect the cable of the Techstream to the DLC3, turn the engine switch on (IG) and attempt to use the Techstream. If the display indicates that a communication error has occurred, there is a problem either with the vehicle or with the Techstream. HINT: If communication is normal when the Techstream is connected to another vehicle, inspect the DLC3 of the original vehicle. If communication is still not possible when the Techstream is connected to another vehicle, the problem may be in the Techstream itself. Consult the Service Department listed in the Techstream's instruction manual.
3. INSPECT BATTERY VOLTAGE Measure the battery voltage. Standard voltage 11 to 14 V If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.

DTC CHECK / CLEAR

1. CHECK DTC Connect the Techstream to the DLC3. Turn the engine switch on (IG). Check the DTC(s).
2. CLEAR DTC Connect the Techstream to the DLC3. Turn the engine switch on (IG). Clear the DTCs. Check that "DTCs are cleared" is displayed. NOTE: If any DTCs are output, troubleshoot those DTCs again.

DATA LIST / ACTIVE TEST

1. READ DATA LIST HINT: Using the Techstream's Data List allows switch, sensor, actuator and other item values to be read without removing any parts. Reading the Data List early in troubleshooting is one way to save time. Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream ON. Select the following menu items: Body / Master Switch / Data List. Read the Data List according to the display on the Techstream. Master Switch: Tester Display Measurement Item/Range Normal Condition Diagnostic Note D Door P/W Auto SW Driver side power window auto switch signal / ON or OFF ON: Driver door power window auto switch is operated OFF: Driver door power window auto switch is not operated - 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 is operated OFF: Front passenger door power window auto 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 auto switch is operated OFF: Rear LH power window auto 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 auto switch is operated OFF: Rear RH power window auto 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 door power window manual up switch is operated OFF: Front passenger door power window manual up 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 manual up switch is operated OFF: Rear LH power window manual up 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 manual up switch is operated OFF: Rear RH power window manual up 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 door power window manual down switch is operated OFF: Front passenger door power window manual down 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 manual down switch is operated OFF: Rear LH power window manual down 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 manual down switch is operated OFF: Rear RH power window manual down 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 - Select the following menu items: Body / D-Door Motor / Data List. Read the Data List according to the display on the Techstream. D-Door Motor: Tester Display Measurement Item/Range Normal Condition Diagnostic Note D Door P/W Auto SW Driver door power window auto switch signal / ON or OFF ON: Driver door power window auto switch is operated OFF: Driver door power window auto switch is not operated - D Door P/W Up SW Driver door power window manual up switch signal / ON or OFF ON: Driver door power window manual up switch is operated OFF: Driver door power window manual up switch is not operated - D Door P/W Down SW Driver door power window manual down switch signal / ON or OFF ON: Driver door power window manual down switch is operated OFF: Driver door power window manual down switch is not operated - Glass Position (Close - 1/4) Jam protection operation within range of fully closed to 1/4 open window glass position / OK or CAUTION OK: Margin is sufficient during manual UP operation CAUTION: May be displayed even when no resistance is applied in each position. In this case, there is a foreign object stuck in that position. - Glass Position (1/4 - 2/4) Jam protection operation within range of 1/4 to 1/2 open window glass position / OK or CAUTION OK: Margin is sufficient during manual UP operation CAUTION: May be displayed even when no resistance is applied in each position. In this case, there is a foreign object stuck in that position. - Glass Position (2/4 - 3/4) Jam protection operation within range of 1/2 to 3/4 open window glass position / OK or CAUTION OK: Margin is sufficient during manual UP operation CAUTION: May be displayed even when no resistance is applied in each position. In this case, there is a foreign object stuck in that position. - Glass Position (3/4 - Open) Jam protection operation within range of 3/4 to fully open window glass position / OK or CAUTION OK: Margin is sufficient during manual UP operation CAUTION: May be displayed even when no resistance is applied in each position. In this case, there is a foreign object stuck in that position. - Select the following menu items: Body / P-Door Motor / Data List. Read the Data List according to the display on the Techstream. P-Door Motor: Tester Display Measurement Item/Range Normal Condition Diagnostic Note P Door P/W Auto SW Front passenger side power window auto switch signal / ON or OFF ON: Front passenger door power window auto switch is operated OFF: Front passenger door power window auto 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 door power window manual up switch is operated OFF: Front passenger door power window manual up 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 door power window manual down switch is operated OFF: Front passenger door power window manual down switch is not operated - Glass Position (Close - 1/4) Jam protection operation within range of fully closed to 1/4 open window glass position / OK or CAUTION OK: Margin is sufficient during manual UP operation CAUTION: May be displayed even when no resistance is applied in each position. In this case, there is a foreign object stuck in that position. - Glass Position (1/4 - 2/4) Jam protection operation within range of 1/4 to 1/2 open window glass position / OK or CAUTION OK: Margin is sufficient during manual UP operation CAUTION: May be displayed even when no resistance is applied in each position. In this case, there is a foreign object stuck in that position. - Glass Position (2/4 - 3/4) Jam protection operation within range of 1/2 to 3/4 open window glass position / OK or CAUTION OK: Margin is sufficient during manual UP operation CAUTION: May be displayed even when no resistance is applied in each position. In this case, there is a foreign object stuck in that position. - Glass Position (3/4 - Open) Jam protection operation within range of 3/4 to fully open window glass position / OK or CAUTION OK: Margin is sufficient during manual UP operation CAUTION: May be displayed even when no resistance is applied in each position. In this case, there is a foreign object stuck in that position. - Select the following menu items: Body / RL-Door Motor / Data List. Read the Data List according to the display on the Techstream. RL-Door Motor: Tester Display Measurement Item/Range Normal Condition Diagnostic Note RL Door P/W Auto SW Rear LH power window auto switch signal / ON or OFF ON: Rear LH power window auto switch is operated OFF: Rear LH power window auto 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 manual up switch is operated OFF: Rear LH power window manual up 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 manual down switch is operated OFF: Rear LH power window manual down switch is not operated - Glass Position (Close - 1/4) Jam protection operation within range of fully closed to 1/4 open window glass position / OK or CAUTION OK: Margin is sufficient during manual UP operation CAUTION: May be displayed even when no resistance is applied in each position. In this case, there is a foreign object stuck in that position. - Glass Position (1/4 - 2/4) Jam protection operation within range of 1/4 to 1/2 open window glass position / OK or CAUTION OK: Margin is sufficient during manual UP operation CAUTION: May be displayed even when no resistance is applied in each position. In this case, there is a foreign object stuck in that position. - Glass Position (2/4 - 3/4) Jam protection operation within range of 1/2 to 3/4 open window glass position / OK or CAUTION OK: Margin is sufficient during manual UP operation CAUTION: May be displayed even when no resistance is applied in each position. In this case, there is a foreign object stuck in that position. - Glass Position (3/4 - Open) Jam protection operation within range of 3/4 to fully open window glass position / OK or CAUTION OK: Margin is sufficient during manual UP operation CAUTION: May be displayed even when no resistance is applied in each position. In this case, there is a foreign object stuck in that position. - Select the following menu items: Body / RR-Door Motor / Data List. Read the Data List according to the display on the Techstream. RR-Door Motor: Tester Display Measurement Item/Range Normal Condition Diagnostic Note RR Door P/W Auto SW Rear RH power window auto switch signal / ON or OFF ON: Rear RH power window auto switch is operated OFF: Rear RH power window auto 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 manual up switch is operated OFF: Rear RH power window manual up 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 manual down switch is operated OFF: Rear RH power window manual down switch is not operated - Glass Position (Close - 1/4) Jam protection operation within range of fully closed to 1/4 open window glass position / OK or CAUTION OK: Margin is sufficient during manual UP operation CAUTION: May be displayed even when no resistance is applied in each position. In this case, there is a foreign object stuck in that position. - Glass Position (1/4 - 2/4) Jam protection operation within range of 1/4 to 1/2 open window glass position / OK or CAUTION OK: Margin is sufficient during manual UP operation CAUTION: May be displayed even when no resistance is applied in each position. In this case, there is a foreign object stuck in that position. - Glass Position (2/4 - 3/4) Jam protection operation within range of 1/2 to 3/4 open window glass position / OK or CAUTION OK: Margin is sufficient during manual UP operation CAUTION: May be displayed even when no resistance is applied in each position. In this case, there is a foreign object stuck in that position. - Glass Position (3/4 - Open) Jam protection operation within range of 3/4 to fully open window glass position / OK or CAUTION OK: Margin is sufficient during manual UP operation CAUTION: May be displayed even when no resistance is applied in each position. In this case, there is a foreign object stuck in that position. - Select the following menu items: Body / Main Body / Data List. Read the Data List according to the display on the Techstream. Main Body (Body ECU): Tester Display Measurement Item/Range Normal Condition Diagnostic Note D Door Courtesy SW Driver side door courtesy switch signal / ON or OFF ON: Driver side door is open OFF: Driver side door is closed - P Door Courtesy SW Front passenger side door courtesy switch signal / ON or OFF ON: Front passenger side door is open OFF: Front passenger side door is closed - RR Door Courtesy SW Rear RH side door courtesy switch signal / ON or OFF ON: Rear RH side door is open OFF: Rear RH side door is closed - RL Door Courtesy SW Rear RL side door courtesy switch signal / ON or OFF ON: Rear LH side door is open OFF: Rear LH side door is closed
2. 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) and turn the Techstream ON. Select the following menu items: Body / D-Door Motor / Active Test. Perform the Active Test according to the display on the Techstream. D-Door Motor: Tester Display Test Part Control Range Diagnostic Note Power Window Power window UP / OFF (OFF) - Power Window Power window DOWN / OFF (OFF) - Select the following menu items: Body / P-Door Motor / Active Test. Perform the Active Test according to the display on the Techstream. P-Door Motor: Tester Display Test Part Control Range Diagnostic Note Power Window Power window UP / OFF (OFF) - Power Window Power window DOWN / OFF (OFF) - Select the following menu items: Body / RL-Door Motor / Active Test. Perform the Active Test according to the display on the Techstream. RL-Door Motor: Tester Display Test Part Control Range Diagnostic Note Power Window Power window UP / OFF (OFF) - Power Window Power window DOWN / OFF (OFF) - Select the following menu items: Body / RR-Door Motor / Active Test. Perform the Active Test according to the display on the Techstream. RR-Door Motor: Tester Display Test Part Control Range Diagnostic Note Power Window Power window UP / OFF (OFF) - Power Window Power window DOWN / OFF (OFF)

DIAGNOSTIC TROUBLE CODE CHART

Power Window Control System Diagnostic Trouble Code Chart