Windshield/windowglass: Diagnosis Lexus ES XV40

HOW TO PROCEED WITH TROUBLESHOOTING

HINT

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

1. VEHICLE BROUGHT TO WORKSHOP
2. CUSTOMER PROBLEM ANALYSIS CHECK AND SYMPTOM CHECK
3. CHECK COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM Use the intelligent tester, inspect the LIN communication function to ensure there are no malfunctions in the communication system. Result RESULT CHART Result Proceed to No DTCs output A DTCs output B B: GO TO «DIAGNOSTIC TROUBLE CODE CHART»(ref-283132-S37049070792008041700000) A: Go to Next Step
4. PROBLEM SYMPTOMS TABLE HINT: See «PROBLEM SYMPTOMS TABLE»(ref-283132-S33606008072008041700000) .
5. OVERALL ANALYSIS AND TROUBLESHOOTING Data list/Active test HINT: See «DATA LIST / ACTIVE TEST»(ref-283132-S31412109532008041700000) . Circuit inspection Terminal of ECU HINT: See «TERMINALS OF ECU»(ref-283132-S00660101682008041700000) .
6. ADJUST, REPAIR OR REPLACE
7. RESET POWER WINDOW MOTOR HINT: See «OPERATION CHECK»(ref-283132-S38943725982008041700000) . NEXT: END

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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 SWITCH OPERATION CHART 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 SWITCH OPERATION CHART 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 SWITCH OPERATION CHART 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 SWITCH OPERATION CHART 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 SWITCH OPERATION CHART 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 SWITCH OPERATION CHART 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

PROBLEM SYMPTOMS CHART

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1. POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY Disconnect the 15 switch connector. Measure the voltage and resistance of each terminal according to the value(s) in the table below. Standard resistance TERMINAL DESCRIPTION SPECIFIED CONDITION CHART 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 TERMINAL DESCRIPTION SPECIFIED CONDITION CHART 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 15 switch connector and reset the power window motor. Measure the voltage according to the value(s) in the table below. Standard voltage TERMINAL DESCRIPTION SPECIFIED CONDITION CHART 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 (I5-2O) - 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 TERMINAL DESCRIPTION SPECIFIED CONDITION CHART 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 TERMINAL DESCRIPTION SPECIFIED CONDITION CHART 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) 0 V --> 10 to 14 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) 0 V --> 10 to 14 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 TERMINAL DESCRIPTION SPECIFIED CONDITION CHART 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 TERMINAL DESCRIPTION SPECIFIED CONDITION CHART 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), roar 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) 0 V --> 10 to 14 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) 0 V --> 10 to 14 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 TERMINAL DESCRIPTION SPECIFIED CONDITION CHART 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 TERMINAL DESCRIPTION SPECIFIED CONDITION CHART 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) 0 V --> 10 to 14 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) 0 V --> 10 to 14 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 14 switch connector. Measure the voltage and resistance according to the value(s) in the table below. Standard resistance TERMINAL DESCRIPTION SPECIFIED CONDITION CHART 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 TERMINAL DESCRIPTION SPECIFIED CONDITION CHART 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 TERMINAL DESCRIPTION SPECIFIED CONDITION CHART 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 TERMINAL DESCRIPTION SPECIFIED CONDITION CHART 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 TERMINAL DESCRIPTION SPECIFIED CONDITION CHART 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 TERMINAL DESCRIPTION SPECIFIED CONDITION CHART 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 TERMINAL DESCRIPTION SPECIFIED CONDITION CHART 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 TERMINAL DESCRIPTION SPECIFIED CONDITION CHART 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.

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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 intelligent tester 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. TERMINAL DESCRIPTION SPECIFIED CONDITION CHART 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 (1) 54 to 69 ohms CANH (6) - CG (4) HIGH-level CAN bus line Engine switch OFF (1) 200 ohms or more CANL (14)-CG (4) LOW-level CAN bus line Engine switch OFF (1) 200 ohms or more CANH (6)-BAT (16) HIGH-level CAN bus line Engine switch OFF (1) 6 kohms or more CANL (14)-BAT (16) LOW-level CAN bus line Engine switch OFF (1) 6 kohms or more NOTE: (1) 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 the intelligent tester 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 the intelligent tester to the DLC3. Turn the engine switch on (IG). Check the DTC(s).
2. CLEAR DTC Connect the intelligent tester 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 INTELLIGENT TESTER Connect the intelligent tester to the DLC3. Monitor the ECU data by following the prompts on the tester screen. HINT: The intelligent tester has a "Snapshot" function which records the monitored data. Refer to the intelligent tester operator's manual for further details.
2. DATA LIST HINT: Using the DATA LIST displayed on the intelligent tester, 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 the intelligent tester to the DLC3. Turn the engine switch on (IG). Read the DATA LIST according to the display on the tester. MASTER SW: DIAGNOSTIC NOTE CHART 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 - Body: DIAGNOSTIC NOTE CHART 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 the intelligent tester 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 the intelligent tester to the DLC3. Turn the engine switch on (IG). Perform the ACTIVE TEST according to the display on the tester. Body: NORMAL CONDITION CHART Tester Display Measurement Item/Range Normal Condition IG OFF P/W Operates power window ON/OFF (After ignition OFF)

DIAGNOSTIC TROUBLE CODE CHART

POWER WINDOW CONTROL SYSTEM

DIAGNOSTIC TROUBLE CODE CHART

INSPECTION PROCEDURE

1. INITIALIZE POWER WINDOW CONTROL SYSTEM Initialize the power window regulator motor assembly (on the driver side) (See «INITIALIZATION»(ref-283132-S02546007652008041700000) ). Check that the power window operates normally by opening and closing the window. OK: Driver side power window operates normally. NG: REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Driver Side) OK: Go to Next Step
2. CHECK WHETHER PARTS HAVE BEEN INSTALLED CORRECTLY Check that the power window components (on the driver side) are installed correctly. OK: Power window components (on driver side) are installed correctly. HINT: When the power window components are installed correctly, the problem has been caused by battery disconnection while the engine switch is on (IG), improper installation of the power window components or the motor being overheated. NG: INSTALL PARTS CORRECTLY OK: END

Note. When using the intelligent tester to troubleshoot the LIN communication line: Connect the intelligent tester to the vehicle, and turn the courtesy light switch on and off at 1.5 second intervals until communication between the tester and vehicle begins.

1. CHECK DTC OUTPUT Turn the engine switch off. Wait for at least 10 seconds, and then turn the engine switch on (IG). Check whether the DTC output recurs. Result RESULT CHART Display (DTC Output) Proceed to B2313 A No output B B: END A: Go to Next Step
2. INITIALIZE SYSTEM (POWER WINDOW CONTROL SYSTEM) Turn the engine switch on (IG) and initialize the power window regulator motor (on the driver side) (See «INITIALIZATION»(ref-283132-S02546007652008041700000) ). Turn the engine switch off. Wait for at least 10 seconds, and then turn the engine switch on (IG). Check whether the DTC output recurs. Result RESULT CHART Display (DTC Output) Proceed to No output A B2313 B B: REPLACE DRIVER SIDE POWER WINDOW REGULATOR MOTOR ASSEMBLY A: END

When using intelligent tester

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1. CHECK WIRE HARNESS Disconnect the 15 connector. Measure the voltage and resistance according to the value(s) in the table below. Standard voltage TESTER CONNECTION SPECIFIED CONDITION CHART Tester Connection Condition Specified Condition I5-11 (B) - Body ground Engine switch on (IG) 10 to 14 V Standard resistance TESTER CONNECTION SPECIFIED CONDITION CHART Tester Connection Condition Specified Condition I5-12 (E) - Body ground Always Below 1 ohms NG: REPAIR OR REPLACE FUSE, HARNESS OR CONNECTOR OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

INSPECTION

1. INSPECT POWER WINDOW MASTER SWITCH Measure the resistance when the switch is operated according to the value(s) in the table below. Standard resistance TESTER CONNECTION SPECIFIED CONDITION CHART Tester Connection Switch Condition Specified Condition 20 (U) - 12 (E) Manual UP Below 1 ohms 15 (D) - 12 (E) Manual DOWN Below 1 ohms

1. INSPECT POWER WINDOW SWITCH Remove the power window switch. Measure the resistance when the switch is operated according to the value(s) in the table below. Standard resistance TESTER CONNECTION SPECIFIED CONDITION CHART Tester Connection Switch Condition Specified Condition 2 (E) - 4 (A) - 5 (E) Auto UP Below 1 ohms 2 (U) - 5 (E) Manual UP Below 1 ohms 5 (E) - 10 (D) Manual DOWN Below 1 ohms 4 (A) - 10 (D) - 5 (E) Auto DOWN Below 1 ohms

1. INSPECT POWER WINDOW SWITCH (for Rear RH) Remove the power window switch. Measure the resistance when the switch is operated according to the value(s) in the table below. Standard resistance TESTER CONNECTION SPECIFIED CONDITION CHART Tester Connection Switch Condition Specified Condition 2 (E) - 4 (A) - 5 (E) Auto UP Below 1 ohms 2 (U) - 5 (E) Manual UP Below 1 ohms 5 (E) - 10 (D) Manual DOWN Below 1 ohms 4 (A) - 10 (D) - 5 (E) Auto DOWN Below 1 ohms
2. REMOVE POWER WINDOW SWITCH (for Rear LH) Remove the power window switch. Measure the resistance when the switch is operated according to the value(s) in the table below. Standard resistance TESTER CONNECTION SPECIFIED CONDITION CHART Tester Connection Switch Condition Specified Condition 2 (E) - 4 (A) - 5 (E) Auto UP Below 1 ohms 2 (U) - 5 (E) Manual UP Below 1 ohms 5 (E) - 10 (D) Manual DOWN Below 1 ohms 4 (A) - 10 (D) - 5 (E) Auto DOWN Below 1 ohms

HINT

1. Use the following procedure to troubleshoot the defogger system.
2. The intelligent tester should be used in step 4 .

1. VEHICLE BROUGHT TO WORKSHOP
2. INSPECT BATTERY VOLTAGE Standard voltage: 11 to 14 V If the voltage is below 11V, recharge or replace the battery before proceeding to the next step.
3. PROBLEM SYMPTOMS TABLE HINT: (See «PROBLEM SYMPTOMS TABLE»(ref-283132-S19822785452008041700000) )
4. OVERALL ANALYSIS AND TROUBLESHOOTING (See «TERMINALS OF ECU»(ref-283132-S36167442562008041700000) ) (See «DATA LIST / ACTIVE TEST»(ref-283132-S08481110462008041700000) ) (See «ON-VEHICLE INSPECTION»(ref-283132-S26932030562008041700000) )
5. REPAIR OR REPLACE
6. CONFIRMATION TEST NEXT: END

WINDOW DEFOGGER SYSTEM

PROBLEM SYMPTOMS CHART

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1. CHECK A/C AMPLIFIER ASSEMBLY Measure the voltage and resistance of each terminal of the connectors. Standard voltage TERMINAL DESCRIPTION SPECIFIED CONDITION CHART Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition RDFG (E1-38) - GND (E1-14) G-W-B Rear Defogger Signal Engine switch on (IG), Rear defogger switch OFF 10 to 14 V Standard resistance TERMINAL DESCRIPTION SPECIFIED CONDITION CHART Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition GND (E1-14) - Body ground W-B - Body ground Ground Always Below 1 ohms

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1. DESCRIPTION The defogger system data can be read from the Data Link Connector 3 (DLC3) of the vehicle. When the system seems to be malfunctioning, use the intelligent tester 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 J 1962 and matches the ISO 15765-4 format. TERMINAL DESCRIPTION SPECIFIED CONDITION CHART 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 (1) 54 to 69 ohms CANH (6) - CG (4) HIGH-level CAN bus line Engine switch OFF (1) 200 ohms or more CANL (14) - CG (4) LOW-level CAN bus line Engine switch OFF (1) 200 ohms or more CANH (6) - BAT (16) HIGH-level CAN bus line Engine switch OFF (1) 6 kohms or more CANL (14) - BAT (16) LOW-level CAN bus line Engine switch OFF (1) 6 kohms or more NOTE: (1) 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. HINT: Connect the cable of the intelligent tester 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.

1. PERFORM ACTIVE TEST HINT: Performing the intelligent tester's ACTIVE TEST allows a relay, VSV, actuator and other items to be operated without removing any parts. Performing the ACTIVE TEST early in troubleshooting is one way to save time. The DATA LIST can be displayed during the ACTIVE TEST. Connect the intelligent tester (with CAN VIM) to the DLC3. Turn the engine switch on (IG). Perform the ACTIVE TEST according to the display on the tester. Air Conditioner: NORMAL CONDITION CHART Tester Display Measurement Item/Range Normal Condition Defogger Relay (Rear) Turns rear window defogger OFF/ON

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1. CHECK REAR WINDOW DEFOGGER SYSTEM OPERATION When the engine switch is turned on (IG) and the defogger switch is pressed, check that the rear window defogger operates. HINT: After 15 minutes, check that the defogger automatically turns off.
2. INSPECT BACK WINDOW (DEFOGGER WIRE) NOTE: When cleaning the glass, wipe the glass along the wire using a soft and dry cloth. Take care not to damage the wires. Do not use detergents or glass cleaners that have abrasive ingredients. When measuring voltage, wrap a piece of tin foil around the tip of the negative tester probe and press the foil against the wire with your finger, as shown in the illustration. Turn the engine switch on (IG). Turn the defogger switch on. Check the voltage at the center of each defogger wire, as shown in the illustration. Standard voltage VOLTAGE CHART Voltage Criteria Approx. 5 V Wire is not broken Approx. 10 or 0 V Wire is broken HINT: If there is approximately 10 V, the wire may be faulty between the center of the wire and the wire end on the battery side. If there is no voltage, the wire may be faulty between the center of the wire and the wire end on the ground side. Place the voltmeter's positive (+) lead against the defogger wire on the battery side. Place the voltmeter's negative (-) lead with the foil strip against the wire on the ground side. Slide the positive (+) lead from the battery side to the ground side. The point where the voltage drops from approximately 10 V to 0 V is the place where the defogger wire is broken. HINT: If the defogger wire is not broken, the voltmeter should indicate 0 V at the positive (+) end of the defogger wire but gradually increase to approximately 12 V as the meter probe moves to the other end.

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1. REPAIR WINDOW DEFOGGER WIRE Clean the broken wire tips with a grease, wax and silicone remover. Place the masking tape along both sides of the wire. Thoroughly mix the repair agent (DuPont paste No. 4817 or equivalent). Using a fine tip brush, apply a small amount of the agent to the wire. After a few minutes, remove the masking tape. NOTE: Do not repair the defogger wire again for at least 24 hours.