Power Windows: Diagnosis Lexus GS II рестайлинг

TROUBLE SHOOTING

1. Trouble shooting of a power window system complaint begins with verification of the customer problem. If problem occurs, go to step 3 . If problem does not occur, go to next step.
2. If problem does not occur, review conditions under which problem occurred for customer and try to duplicate those conditions. For example, if the problem occurs on rainy days or during high humidity conditions, sprinkle water onto vehicle and see if malfunction occurs. DO NOT sprinkle water directly into engine compartment or onto electronic components. Visually inspect for signs of mechanical and electrical damage. Inspect for blown fuses and damaged relays. Inspect for loose or corroded connections, damaged wiring harnesses and/or switches. Check for a broken or partially broken wire inside insulation, which could cause system malfunction but prove good in a continuity/voltage check with system disconnected. Ensure any aftermarket electronic equipment is properly installed. If fault is found, repair as necessary.
3. Inspect the multiplex communication system and confirm that there is no trouble by the basic inspection and DTC check. See PRE-CHECK under SELF-DIAGNOSTIC in «MULTIPLEX COMMUNICATION SYSTEM»(ref-152690) article under COMMUNICATION DEVICES in ACCESSORIES & EQUIPMENT.
4. Determine problem symptom. See «PROBLEM SYMPTOM INDEX»(ref-153002-S22522947812003031000000) table. PROBLEM SYMPTOM INDEX Symptom Suspected Area (1) All Power Windows Do Not Operate (2) (3) (4) (5) (6) Window Does Not Operate With Power Window Master Switch (Manual Or Automatic Operation Can Not Be Performed) (7) Remote Control Of All Windows (Except Driver's) Does Not Function With Master Switch (Windows Operate Normally With Each Of Master Switches) (8) Key Related Power Window Operation Does Not Operate With Driver Side Door Key Cylinder (Master Switch Operation Is Normal) (9) Power Window Does Not Operate With Multi-Function Transmitter (Windows Operate Normally With Master Switch) (10) Window Moves Down Without Being Ordered During Up Operation (11) Driver Door Power Window Does Not Operate (3) (13) (12) (4) (5) Auto Up (Or Down) Function Does Not Operate (3) (5) Jam Protection & Auto Up (Or Down) Function Does Not Operate (14) (15) (5) Window Lock Function Does Not Operate (3) Passenger Door Power Window Does Not Operate (13) (12) (16) Auto Up (Or Down) Function Does Not Operate (13) (16) Jam Protection Function & Auto Up (Or Down) Function Does Not Operate (14) (15) (16) Rear Door Power Window Does Not Operate (17) (18) (19) Auto Up (Or Down) Function Does Not Operate (17) (19) Jam Protection & Auto Up (Or Down) Function Does Not Operate (20) (21) (19) (1) Perform test procedures in order listed under suspected area. (2) Check the PWS circuit. See PWS CIRCUIT in CIRCUIT TESTS in «BODY CONTROL SYSTEMS»(ref-152747) article under COMMUNICATION DEVICES in ACCESSORIES & EQUIPMENT. (3) Check the power window master switch. See «POWER WINDOW MASTER SWITCH CIRCUIT (DRIVER)»(ref-153002-S29968230992003031000000) under CIRCUIT TESTS and «POWER WINDOW MASTER SWITCH»(ref-153002-S33247648742003031000000) under COMPONENT TESTS. (4) Check the wire harness. See «WIRING DIAGRAMS»(ref-153002-S14154090992003031000000) . (5) Check the driver door ECU. See «PIN VOLTAGE TESTS»(ref-153002-S29963206662003031000000) . (6) Check the body ECU No. 1. See «BODY CONTROL SYSTEMS»(ref-152747) article under COMMUNICATION DEVICES in ACCESSORIES & EQUIPMENT. (7) Perform «TEST A: WINDOW DOES NOT OPERATE WITH POWER WINDOW MASTER SWITCH (MANUAL OR AUTOMATIC OPERATION CAN NOT BE PERFORMED)»(ref-153002-S16840116812003031100000) under SYSTEM TESTS. (8) Perform «TEST B: REMOTE CONTROL OF ALL WINDOWS (EXCEPT DRIVER'S) DOES NOT FUNCTION WITH MASTER SWITCH (WINDOWS OPERATE NORMALLY WITH EACH MASTER SWITCH)»(ref-153002-S06669220952003031100000) under SYSTEM TESTS. (9) Perform «TEST C: KEY RELATED POWER WINDOW OPERATION DOES NOT OPERATE WITH DRIVER SIDE DOOR KEY CYLINDER (MASTER SWITCH OPERATION IS NORMAL)»(ref-153002-S40288205352003031100000) under SYSTEM TESTS. (10) Perform «TEST D: POWER WINDOW DOES NOT OPERATE WITH MULTI-FUNCTION TRANSMITTER (WINDOWS OPERATE NORMALLY WITH MASTER SWITCH)»(ref-153002-S12587035322003031100000) under SYSTEM TESTS. (11) Perform «TEST E: WINDOW MOVES DOWN WITHOUT BEING ORDERED DURING UP OPERATION»(ref-153002-S26322398602003031100000) under SYSTEM TESTS. (12) Check the power window motor circuit. See «POWER WINDOW MOTOR CIRCUIT (FRONT)»(ref-153002-S00457964482003031000000) under CIRCUIT TESTS and «POWER WINDOW MOTOR (FRONT)»(ref-153002-S12502348872003031000000) under COMPONENT TESTS. (13) Check the power window switch circuit. See «POWER WINDOW SWITCH CIRCUIT (PASSENGER)»(ref-153002-S32974729112003031000000) under CIRCUIT TESTS and «POWER WINDOW SWITCH (PASSENGER & REAR)»(ref-153002-S02984106422003031000000) under COMPONENT TESTS. (14) Check the jam protection limit switch circuit. See «JAM PROTECTION LIMIT SWITCH CIRCUIT (FRONT)»(ref-153002-S10097955462003031000000) under CIRCUIT TESTS. (15) Check the jam protection pulse switch circuit. See «JAM PROTECTION PULSE SWITCH CIRCUIT (FRONT)»(ref-153002-S39564578582003031000000) under CIRCUIT TESTS. (16) Check the passenger door ECU. See «PIN VOLTAGE TESTS»(ref-153002-S29963206662003031000000) . (17) Check the power window switch circuit. See «POWER WINDOW SWITCH CIRCUIT (REAR)»(ref-153002-S17425999742003031000000) under CIRCUIT TESTS. (18) Check the power window motor circuit. See «POWER WINDOW MOTOR CIRCUIT (REAR)»(ref-153002-S41944341012003031000000) under CIRCUIT TESTS. (19) Check the appropriate rear door ECU. See «PIN VOLTAGE TESTS»(ref-153002-S29963206662003031000000) . (20) Check the jam protection limit switch circuit. See «JAM PROTECTION LIMIT SWITCH CIRCUIT (REAR)»(ref-153002-S34421094502003031000000) under CIRCUIT TESTS. (21) Check the jam protection pulse switch circuit. See «JAM PROTECTION PULSE SWITCH CIRCUIT (REAR)»(ref-153002-S17974057652003031000000) under CIRCUIT TESTS.
5. Inspect the circuits of the power window system. See «CIRCUIT TESTS»(ref-153002-S00017282932003031000000) .
6. After repairs have been completed, confirm that problem has been eliminated. Operate the system under same conditions recorded for original complaint. If problem is no longer present, repair has corrected problem. If problem is still present, further diagnosis and repair is required.

Circuit Description

The jam protection limit switch is built-in the power window motor. (Scheme 3)and (Scheme 4). This switch functions to turn OFF before the top dead center and ECU reads the OFF signal resulting in closing the window fully.

Scheme 3

Scheme 4

Inspection Procedure

Note. If using the hand-held tester, start the inspection from step 1 and if not using the hand-held tester, start from step 2 .

1. Check the power window motor using the hand-held tester. Connect the hand-held tester to the DLC3. Check the jam protection limit switch using DATA LIST. If the results are OK, check the jam protection pulse switch circuit. See «JAM PROTECTION PULSE SWITCH CIRCUIT (FRONT)»(ref-153002-S39564578582003031000000) . If the results are not good, go to the next step.
2. Check the jam protection limit switch. See «JAM PROTECTION LIMIT SWITCH (FRONT)»(ref-153002-S28571080642003031000000) under COMPONENT TESTS. If the results are OK, go to the next step. If the results are not good, replace the power window motor. See «FRONT DOOR POWER WINDOW REGULATOR»(ref-153002-S33531785362003031100000) under COMPONENT TESTS.
3. Check the wire harness and connector between the jam protection limit switch and door ECU (driver or passenger). If the results are OK, check the jam protection pulse switch circuit. See «JAM PROTECTION PULSE SWITCH CIRCUIT (FRONT)»(ref-153002-S39564578582003031000000) . If the results are not good, repair or replace the wire harness or connector.

The jam protection pulse is built-in the power window motor. The pulse switch outputs ON/OFF pulse when the motor rotates. (Scheme 3)and (Scheme 4).

1. Check the jam protection pulse switch. See «JAM PROTECTION PULSE SWITCH (FRONT)»(ref-153002-S02920706512003031000000) under COMPONENT TESTS. If the results are OK, go to the next step. If the results are not good, replace the power window motor. See «FRONT DOOR POWER WINDOW REGULATOR»(ref-153002-S33531785362003031100000) under COMPONENT TESTS.
2. Check the wire harness and connector between jam protection pulse switch and the appropriate door ECU (driver or passenger). If the results are OK, check the appropriate door ECU (driver or passenger). If the results are not good, repair or replace the wire harness or connector.

For power window master switch circuit diagram (Scheme 5)

Scheme 5

1. Check the power window master switch circuit using DTC check. See «MULTIPLEX COMMUNICATION SYSTEM»(ref-152690) article under COMMUNICATION DEVICES in ACCESSORIES & EQUIPMENT. If the results are OK, check the following: Driver Door ECU Body ECU No. 1 If the results are not good, go to the next step.
2. Check the power window master switch. See «POWER WINDOW MASTER SWITCH»(ref-153002-S33247648742003031000000) under COMPONENT TESTS. If the results are OK, go to the next step. If the results are not good, replace the power window master switch. See «POWER WINDOW MASTER SWITCH»(ref-153002-S04901217132003031000000) under REMOVAL & INSTALLATION.
3. Check the wire harness and connector between the power window master switch and driver door ECU. If the results are OK, check the following: Driver Door ECU. Body ECU No. 1. If the results are not good, repair or replace the wire harness or connector.

For the passenger door power window switch circuit diagram (Scheme 6)

Scheme 6

1. Check the power window switch circuit using the DTC check. See «MULTIPLEX COMMUNICATION SYSTEM»(ref-152690) article under COMMUNICATION DEVICES in ACCESSORIES & EQUIPMENT. If the results are OK, go to the next step. If the results are not good, check the following: Power Window Motor Circuit. See «POWER WINDOW MOTOR CIRCUIT (FRONT)»(ref-153002-S00457964482003031000000) . Passenger Door ECU.
2. Check the power window switch. See «POWER WINDOW SWITCH (PASSENGER & REAR)»(ref-153002-S02984106422003031000000) under COMPONENT TESTS. If the results are OK, go to the next step. If the results are not good, replace the power window switch. See «POWER WINDOW MASTER SWITCH»(ref-153002-S04901217132003031000000) under REMOVAL & INSTALLATION.
3. Check the wire harness and connector between the power window switch and passenger door ECU. If the results are OK, go to the next step. If the results are not good, repair or replace the wire harness or connector.
4. Check the wire harness and connector between the power window switch and power window master switch. If the results are OK, check the following: Power Window Motor Circuit. See «POWER WINDOW MOTOR CIRCUIT (FRONT)»(ref-153002-S00457964482003031000000) . Passenger Door ECU. If the results are not good, repair or replace the wire harness or connector.

For rear left door power window switch circuit (Scheme 7) For the rear right door power window switch circuit (Scheme 8)

Scheme 7

Scheme 8

1. Check the power window switch circuit using the DTC check. See «MULTIPLEX COMMUNICATION SYSTEM»(ref-152690) article under COMMUNICATION DEVICES in ACCESSORIES & EQUIPMENT. If the results are OK, check the following: Rear Power Window Switch Circuit. See «POWER WINDOW MOTOR CIRCUIT (REAR)»(ref-153002-S41944341012003031000000) . Rear Door ECU. If the results are not good, go to the next step.
2. Check the power window switch. See «POWER WINDOW SWITCH (PASSENGER & REAR)»(ref-153002-S02984106422003031000000) under COMPONENT TESTS. If the results are OK, go to the next step. If the results are not good, replace the power window switch. See «POWER WINDOW MASTER SWITCH»(ref-153002-S04901217132003031000000) under REMOVAL & INSTALLATION.
3. Check the wire harness and connector between the power window switch and rear door ECU. If the results are OK, go to the next step. If the results are not good, repair or replace the wire harness or connector.
4. Check the wire harness and connector between the power window switch and power window master switch. If the results are OK, check the following: Rear Power Window Switch Circuit. See «POWER WINDOW MOTOR CIRCUIT (REAR)»(ref-153002-S41944341012003031000000) . Rear Door ECU. If the results are not good, repair or replace the wire harness or connector.

For driver door power window motor circuit description (Scheme 3) For passenger door power window circuit description (Scheme 4)

Note. If using the hand-held tester, start the inspection from step 1 and if not using the hand-held tester, start from step 2 .

1. Check the power window motor using the hand-held tester. Connect the hand-held tester to the DLC3. Check that the power window motor can operate in an ACTIVE TEST. If the results are OK, check the appropriate door ECU (driver or passenger). If the results are not good, go to the next step.
2. Check the power window motor. See «POWER WINDOW MOTOR (FRONT)»(ref-153002-S12502348872003031000000) under COMPONENT TESTS. If the results are OK, go to the next step. If the results are not good, replace the power window motor. See «FRONT DOOR POWER WINDOW REGULATOR»(ref-153002-S33531785362003031100000) under COMPONENT TESTS.
3. Check the wire harness and connector between the power window motor and door ECU (driver or passenger). If the results are OK, check the appropriate door ECU (driver or passenger). If the results are not good, repair or replace the wire harness or connector.

TEST B: REMOTE CONTROL OF ALL WINDOWS (EXCEPT DRIVER'S) DOES NOT FUNCTION WITH MASTER SWITCH (WINDOWS OPERATE NORMALLY WITH EACH MASTER SWITCH)

For Test B (Scheme 9)

Scheme 9

TEST D: POWER WINDOW DOES NOT OPERATE WITH MULTI-FUNCTION TRANSMITTER (WINDOWS OPERATE NORMALLY WITH MASTER SWITCH)

For test D, see TEST D: POWER WINDOW DOES NOT OPERATE WITH MULTI-FUNCTION TRANSMITTER (WINDOWS OPERATE NORMALLY WITH MASTER SWITCH) table.

TEST D: POWER WINDOW DOES NOT OPERATE WITH MULTI-FUNCTION TRANSMITTER (WINDOWS OPERATE NORMALLY WITH MASTER SWITCH)