Power Window Control (Diagnostics - Introduction): Diagnosis Lexus ES XV40 facelift

HOW TO PROCEED WITH TROUBLESHOOTING

HINT

1. Use the following procedure to troubleshoot the power window control system.
2. Techstream should be used in steps 3 and 5.

1. VEHICLE BROUGHT TO WORKSHOP NEXT: Go to next step
2. CUSTOMER PROBLEM ANALYSIS CHECK AND SYMPTOM CHECK NEXT: Go to next step
3. CHECK COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM Use Techstream, inspect the LIN communication function to ensure there are no malfunctions in the communication system. Result Result Proceed to No DTCs output A DTCs output B B --> GO TO «DIAGNOSTIC TROUBLE CODE CHART»(ref-396754-S23558842712011050900000) DIAGNOSTIC TROUBLE CODE CHART A: Go to next step
4. PROBLEM SYMPTOMS TABLE HINT: Refer to «PROBLEM SYMPTOMS TABLE»(ref-396754-S30323287102011050900000) . NEXT: Go to next step
5. OVERALL ANALYSIS AND TROUBLESHOOTING DATA LIST / ACTIVE TEST. Refer to «DATA LIST / ACTIVE TEST»(ref-396754-S12431030682011050900000) CIRCUIT INSPECTION TERMINALS OF ECU. Refer to «TERMINALS OF ECU»(ref-396754-S00946208332011050900000) NEXT: Go to next step
6. ADJUST, REPAIR OR REPLACE NEXT: Go to next step
7. RESET POWER WINDOW MOTOR HINT: Refer to «INITIALIZATION»(ref-396754-S05531865522011050900000) . NEXT --> END

Scheme 2

Scheme 3

1. CHECK WINDOW LOCK SWITCH Check that the front passenger side power window and rear power windows operation are disabled when the window lock switch of the power window master switch is pressed. Standard Front passenger side power window and rear power windows operation are disabled. Check that the front passenger side power window and rear power windows can be operated when the window lock switch is pressed again. Standard Front passenger side power window and rear power windows can be operated.
2. CHECK MANUAL UP/DOWN FUNCTION Check that the driver side power window operates as follows: Standard Condition Master Switch Switch Operation Power Window Engine switch on (IG) Driver side Pulled halfway up UP (Closed) Pushed halfway down DOWN (Open) Check that the power windows except the driver side power window operate as follows: Standard Condition Switch Switch Operation Power Window Engine switch on (IG) Window lock switch OFF Passenger side Pulled up UP (Closed) Pushed down DOWN (Open) Rear LH Pulled up UP (Closed) Pushed down DOWN (Open) Rear RH Pulled up UP (Closed) Pushed down DOWN (Open)
3. CHECK AUTO UP/DOWN FUNCTION Check that the driver side power window operates as follows: Standard Condition Master Switch Switch Operation Power Window Engine switch on (IG) Driver side Pulled up fully UP (Closed) Pushed down fully DOWN (Open) Check that the power windows except the driver side power window operate as follows: Standard Condition Switch Switch Operation Power Window Engine switch on (IG) Window lock switch OFF Passenger side Pulled up UP (Closed) Pushed down DOWN (Open) Rear LH Pulled up UP (Closed) Pushed down DOWN (Open) Rear RH Pulled up UP (Closed) Pushed down DOWN (Open)
4. CHECK REMOTE MANUAL UP/DOWN FUNCTION Check that the power windows except the driver side power window operate as follows: Standard Condition Master Switch Switch Operation Power Window Engine switch on (IG) Window lock switch OFF Passenger side Pulled up UP (Closed) Pushed down DOWN (Open) Rear LH Pulled up UP (Closed) Pushed down DOWN (Open) Rear RH Pulled up UP (Closed) Pushed down DOWN (Open)
5. CHECK REMOTE AUTO UP/DOWN FUNCTION Check that the power windows except the driver side power window operate as follows: Standard Condition Master Switch Switch Operation Power Window Engine switch on (IG) Window lock switch OFF Passenger side Pulled up UP (Closed) Pushed down DOWN (Open) Rear LH Pulled up UP (Closed) Pushed down DOWN (Open) Rear RH Pulled up UP (Closed) Pushed down DOWN (Open)
6. CHECK JAM PROTECTION FUNCTION NOTE: The jam protection function can activate when either the AUTO UP function or MANUAL UP function is used. Limbs, fingers or other body parts should not be used to test the jam protection function. Do not allow any body parts to get caught by the moving window or regulator. HINT: The jam protection function can activate when either the AUTO UP function or MANUAL UP function are used with the engine switch on (IG). The jam protection function can also activate as long as the driver's door remains closed, within 45 seconds after the engine switch is turned off. Check the reversing distance. Fully open the door glass. Place a check jig measuring 4 to 10 mm (0.16 to 0.40 in.) thick near the window fully closed position. When the door glass is closed using AUTO or MANUAL operation, check that the door glass goes down after contacting the check jig. The glass should go 200 to 240 mm (7.90 to 9.44 in.) away from the position where it contacted the check jig. While the door glass is going down, verify that the window switch cannot be used to make the glass go up. Check the reversing distance. Fully open the door glass. Place a check jig measuring 200 to 250 mm (7.90 to 9.84 in.) thick near the window fully closed position. When the door glass is closed using AUTO or MANUAL operation, check that the door glass goes down after contacting the check jig. The door glass should go 80 to 100 mm away from the position where it contacted the check jig. While the door glass is going down, verify that the window switch cannot be used to make the glass go up.

PROBLEM SYMPTOMS TABLE

POWER WINDOW CONTROL SYSTEM

Scheme 4

Scheme 5

Scheme 6

Scheme 7

Scheme 8

Scheme 9

Scheme 10

Scheme 11

1. POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY Disconnect the I5 switch connector. Measure the voltage and resistance of each terminal according to the value(s) in the table below. Standard resistance Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition E (I5-12) - Body ground W-B - Body ground Ground Always Below 1 ohms Standard voltage Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition B (I5-11) - E (I5-12) V - W-B Power supply Engine switch on (IG) 10 to 14 V If the result is not as specified, there may be a malfunction in the wire harness. Reconnect the I5 switch connector and reset the power window motor. Measure the voltage according to the value(s) in the table below. Standard voltage Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition D (I5-15) - E (I5-12) R - W-B Power window motor DOWN output Engine switch on (IG), driver side power window switch OFF --> DOWN (Manual operation) 10 to 14 V --> 0 V U (I5-20) - E (I5-12) G - W-B Power window motor UP output Engine switch on (IG), driver side power window switch OFF --> UP (Manual operation) 10 to 14 V --> 0 V If the result is not as specified, there may be a malfunction in the wire harness.
2. CHECK POWER WINDOW SWITCH (FRONT PASSENGER SIDE) Disconnect the H6 switch connector. Measure the resistance according to the value(s) in the table below. Standard resistance Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition E (H6-5) - 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. Reconnect the H6 switch connector and reset the power window motor. Measure the voltage according to the value(s) in the table below. Standard voltage Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition A (H6-4) - E (H6-5) L - W-B Power window motor AUTO UP output Engine switch on (IG), front passenger side power window fully open --> UP (AUTO UP position) --> fully closed 10 to 14 V --> 0 V --> 10 to 14 V Power window motor AUTO DOWN output Engine switch on (IG), front passenger side power window fully closed --> DOWN (AUTO UP position) --> fully open 10 to 14 V --> 0 V --> 10 to 14 V D (H6-10) - E (H6-5) R - W-B Power window motor DOWN output Engine switch on (IG), front passenger side power window switch OFF --> DOWN (Manual operation) 10 to 14 V --> 0 V U (H6-2) - E (H6-5) G - W-B Power window motor UP output Engine switch on (IG), front passenger side power window switch OFF --> UP (Manual operation) 10 to 14 V --> 0 V If the result is not as specified, the power window regulator switch assembly may have a malfunction.
3. CHECK POWER WINDOW SWITCH (REAR LH SIDE) Disconnect the K4 switch connector. Measure the resistance according to the value(s) in the table below. Standard resistance Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition E (K4-5) - 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. Reconnect the K4 switch connector and reset the power window motor. Measure the voltage according to the value(s) in the table below. Standard voltage Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition A (K4-4) - E (K4-5) L - W-B Power window motor AUTO UP output Engine switch on (IG), rear LH side power window fully open --> UP (AUTO UP position) --> fully closed 10 to 14 V --> 0 V --> 10 to 14 V Power window motor AUTO DOWN output Engine switch on (IG), rear LH side power window fully closed --> DOWN (AUTO UP position) --> fully open 10 to 14 V --> 0 V --> 10 to 14 V D (K4-10) - E (K4-5) R - W-B Power window motor DOWN output Engine switch on (IG), rear LH side power window switch OFF --> DOWN (Manual operation) 10 to 14 V --> 0 V U (K4-2) - E (K4-5) G - W-B Power window motor UP output Engine switch on (IG), rear LH side power window switch OFF --> UP (Manual operation) 10 to 14 V --> 0 V If the result is not as specified, the power window regulator switch assembly may have a malfunction.
4. CHECK POWER WINDOW SWITCH (REAR RH SIDE) Disconnect the J4 switch connector. Measure the resistance according to the value(s) in the table below. Standard resistance Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition E (J4-5) - 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. Reconnect the J4 switch connector and reset the power window motor. Measure the voltage according to the value(s) in the table below. Standard voltage Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition A (J4-4) - E (J4-5) L - W-B Power window motor AUTO UP output Engine switch on (IG), rear RH side power window fully open --> UP (AUTO UP position) --> fully closed 10 to 14 V --> 0 V --> 10 to 14 V Power window motor AUTO DOWN output Engine switch on (IG), rear RH side power window fully closed --> DOWN (AUTO UP position) --> fully open 10 to 14 V --> 0 V --> 10 to 14 V D (J4-10) - E (J4-5) R - W-B Power window motor DOWN output Engine switch on (IG), rear RH side power window switch OFF --> DOWN (Manual operation) 10 to 14 V --> 0 V U (J4-2) - E (J4-5) G - W-B Power window motor UP output Engine switch on (IG), rear RH side power window switch OFF --> UP (Manual operation) 10 to 14 V --> 0 V If the result is not as specified, the power window regulator switch assembly may have a malfunction.
5. CHECK POWER WINDOW ECU (DRIVER SIDE) Disconnect the I4 switch connector. Measure the voltage and resistance according to the value(s) in the table below. Standard resistance Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition E (I4-1) - Body ground W-B - Body ground Ground Always Below 1 ohms Standard voltage Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition B (I4-2) - Body ground W - Body ground Power supply Engine switch on (IG) 10 to 14 V If the result is not as specified, there may be a malfunction in the wire harness.
6. CHECK POWER WINDOW ECU (FRONT PASSENGER SIDE) Disconnect the H5 switch connector. Measure the voltage and resistance according to the value(s) in the table below. Standard resistance Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition E (H5-1) - Body ground W-B - Body ground Ground Always Below 1 ohms Standard voltage Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition B (H5-2) - Body ground V - Body ground Power supply Engine switch on (IG) 10 to 14 V If the result is not as specified, there may be a malfunction in the wire harness.
7. CHECK POWER WINDOW ECU (REAR LH SIDE) Disconnect the K3 switch connector. Measure the voltage and resistance according to the value(s) in the table below. Standard resistance Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition E (K3-1) - Body ground W-B - Body ground Ground Always Below 1 ohms Standard voltage Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition B (K3-2) - Body ground V - Body ground Power supply Engine switch on (IG) 10 to 14 V If the result is not as specified, there may be a malfunction in the wire harness.
8. CHECK POWER WINDOW ECU (REAR RH SIDE) Disconnect the J3 switch connector. Measure the voltage and resistance according to the value(s) in the table below. Standard resistance Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition E (J3-1) - Body ground W-B - Body ground Ground Always Below 1 ohms Standard voltage Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition B (J3-2) - Body ground V - Body ground Power supply Engine switch on (IG) 10 to 14 V If the result is not as specified, there may be a malfunction in the wire harness.

Scheme 12

Scheme 13

Scheme 14

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 Techstream to check for malfunctions and perform repairs.
2. CHECK DLC3 The ECU uses ISO 15765-4 communication protocol. 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 ignition 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. HINT: Connect the cable of Techstream to the DLC3, turn the engine switch on (IG) and attempt to use the tester. If the display indicates that a communication error has occurred, there is a problem either with the vehicle or with the tester. If communication is normal when the tester is connected to another vehicle, inspect the DLC3 of the original vehicle. If communication is still not possible when the tester is connected to another vehicle, the problem may be in the tester itself. Consult the Service Department listed in the tester's instruction manual.
3. CHECK DIAGNOSIS (WITH JAM PROTECTION) HINT: If there is a malfunction in the pulse sensor, manually operating the power window switch will cause the power window switch light to blink. Turn the engine switch on (IG). Manually operate the power window master switch or power window switch on each door. Check the blinking pattern of the AUTO light as shown in the illustration. If pattern (A) is displayed, check the wire harness or power window ECU. If pattern (B) is displayed, check the power window regulator motor or power window ECU. If the normal pattern is displayed, replace the power window regulator master switch.

DTC CHECK / CLEAR

1. CHECK DTC Connect Techstream to the DLC3. Turn the engine switch on (IG). Check the DTC(s).
2. CLEAR DTC Connect 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. USING TECHSTREAM Connect Techstream to the DLC3. Monitor the ECU data by following the prompts on the tester screen. HINT: Techstream has a "Snapshot" function which records the monitored data. Refer to Techstream operator's manual for further details.
2. DATA LIST HINT: Using the Data List displayed on Techstream, the value of the switches, sensors, actuators, etc. can be read without part removal. Reading the Data List as the first step in troubleshooting is one way to shorten the labor time. Connect Techstream to the DLC3. Turn the engine switch on (IG). Read the Data List according to the display on the tester. MASTER SW: Tester Display Measurement Item/Range Normal Condition Diagnostic Note D P/W Auto SW Driver door power window auto switch signal/ON or OFF ON: Driver door power window auto switch operates OFF: Driver door power window auto switch does not operate - P P/W Auto SW Front passenger door remote power window auto switch signal/ ON or OFF ON: Front passenger door remote power window auto switch operates OFF: Front passenger door remote power window auto switch does not operate - RR P/W Auto SW Rear RH door remote power window auto switch signal/ON or OFF ON: Rear RH door remote power window auto switch operates OFF: Rear RH door remote power window auto switch does not operate - RL P/W Auto SW Rear LH door remote power window auto switch signal/ON or OFF ON: Rear LH door remote power window auto switch operates OFF: Rear LH door remote power window auto switch does not operate - P P/W Up SW Front passenger door remote power window manual up switch signal/ON or OFF ON: Front passenger door remote power window manual up switch operates OFF: Front passenger door remote power window manual up switch does not operate - RR P/W Up SW Rear RH door remote power window manual up switch signal/ ON or OFF ON: Rear RH door remote power window manual up switch operates OFF: Rear RH door remote power window manual up switch does not operate - RL P/W Up SW Rear LH door remote power window manual up switch signal/ ON or OFF ON: Rear LH door remote power window manual up switch operates OFF: Rear LH door remote power window manual up switch does not operate - P P/W Down SW Front passenger door remote power window manual down switch signal/ON or OFF ON: Front passenger door remote power window manual down switch operates OFF: Front passenger door remote power window manual down switch does not operate - RR P/W Down SW Rear RH door remote power window manual down switch signal/ON or OFF ON: Rear RH door remote power window manual down switch operates OFF: Rear RH door remote power window manual down switch does not operate - RL P/W Down SW Rear LH door remote power window manual down switch signal/ON or OFF ON: Rear LH door remote power window manual down switch operates OFF: Rear LH door remote power window manual down switch does not operate - MAIN BODY: Tester Display Measurement Item/Range Normal Condition Diagnostic Note Com Master SW Master switch communication signal OK/STOP OK: Communication is normal STOP: Communication is stopped
3. ACTIVE TEST HINT: Performing the Active Test using Techstream allows you to operate the relay, VSV, actuator, etc. without parts removal. Performing the Active Test as the first step in troubleshooting is one way to shorten the labor time. It is possible to display the Data List during the Active Test. Connect Techstream to the DLC3. Turn the engine switch on (IG). Perform the Active Test according to the display on the tester. MAIN BODY: Tester Display Test Part Control Range Diagnostic Note IG Off P/W Operates power window ON/OFF (After ignition OFF)

DIAGNOSTIC TROUBLE CODE CHART

POWER WINDOW CONTROL SYSTEM