DESCRIPTION & OPERATION
| WARNING | Vehicles are equipped with air bag supplemental restraint system. Before attempting any repairs involving steering column, instrument panel or related components, see SERVICE PRECAUTIONS and DISABLING & ACTIVATING AIR BAG SYSTEM in AIR BAG RESTRAINT SYSTEMS article. |
| CAUTION | When battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION before disconnecting battery. |
AUTO DOWN/UP OPERATION
The signals are input to terminals MDN and AUTO of the driver door ECU when the power window master switch is pressed 2 steps. See WIRING DIAGRAMS . According to these signals, it is determined that the driver door ECU is in the auto mode. The current flows from terminal DN into the front LH power window motor to terminal UP of the driver door ECU to GROUND, to rotate the motor and automatically open the window. Accordingly, when each window switch of the power window master switch is pressed, the window of the relevant door is automatically opened through communication control of the body ECUs and door ECUs etc.
The signals are input to terminals MUP and AUTO of the driver door ECU when the power window master switch is pulled 2 steps. According to these signals, it is determined that the driver door ECU is in the auto mode. The current flows from terminal UP into the front LH power window motor to terminal UP of the driver door ECU to GROUND, to rotate the motor and automatically open the window. Accordingly, when each window switch of the power window master switch is pressed, the window of the relevant door is automatically opened through communication control of the body ECUs and door ECUs etc.
For other windows, as each power window control switch is operated, the window of the relevant door is automatically opened or closed.
KEY OFF POWER WINDOW OPERATION
It is possible to operate the power window for 45 seconds after the ignition key is turned from ON to OFF and the driver or front passenger door is opened. However, when the door is closed while the window is being operated, the power window operation is stopped even though 45 seconds have not elapsed.
MANUAL DOWN/UP OPERATION
The signal is input to terminal MDN of the driver door ECU while the power window master switch is kept pressed one step. See WIRING DIAGRAMS . This activates the driver door ECU to flow the current from terminal DN into the front LH power window motor to terminal UP of the driver door ECU to GROUND, to rotate the motor and open the window.
The signal is input to terminal MUP of the driver door ECU while the power window master switch is kept pulled one step. The signal is input to terminal MUP of the driver door ECU while the power window master switch is kept pulled one step. This activates the driver door ECU to flow the current from terminal UP into the front LH power window motor to terminal DN of the driver door ECU to GROUND, to reversely rotate the motor and close the window. For other windows, as the power window master switch or each power window switch is operated, the window of the relevant door is opened or closed.
POWER WINDOW OPERATION LINKED WITH DOOR KEY LOCK & UNLOCK SWITCH
When the ignition key is inserted into the door key cylinder on the driver or passenger side and kept turned to the lock or unlock position for approximately 1.5 seconds or longer, all the door windows can be opened or closed.
Power Window Close Operation - When the ignition key is inserted into the door key cylinder and kept turned to the lock position for 1.5 second or longer, the signal from the door key lock and unlock switch is input to terminal KL of the driver door ECU or front passenger door ECU. See WIRING DIAGRAMS . Through communication control of the body ECUs and door ECUs etc., the current flows from terminal UP of each door ECU into the power window motor to terminal DN of each door ECU to GROUND, to close all the door windows.
Power Window Open Operation - When the ignition key is inserted into the door key cylinder and kept turned to the unlock position for 1.5 seconds or longer, the signal from the door key lock and unlock switch is input to terminal KUL of the driver door ECU or front passenger door ECU. Through communication control of the body ECUs and door ECUs etc., the current flows from terminal DN of each door ECU into the power window motor to terminal UP of each door ECU to GROUND, to close all the door windows. If any of the following conditions are detected, the power window operation is stopped.
Approximately 10 seconds or longer has elapsed after starting open/close operation. Catching prevention function is activated.
POWER WINDOW OPERATION LINKED WITH TRANSMITTER
When the unlock switch on the transmitter of the ignition key is kept pressed for 2.5 seconds or longer, all the door windows can be opened.
Power Window Open Operation - When the unlock switch of the ignition key is kept pressed for 2.5 seconds or longer, the frequency received from the wireless door lock control ECU is input to the body ECU No. 1. Through communication control of the body ECUs and door ECUs etc., the current flows from terminal DN of each door ECU into the power window motor to terminal UP of each door ECU to GROUND, to open all the door windows. See WIRING DIAGRAMS .
If any of the following conditions are detected, the power window operation is stopped.
- Approximately 10 seconds or longer have elapsed after starting open operation.
- The lock or unlock switch on the transmitter is released.
- Catching prevention function is activated.
TEST A: WINDOW DOES NOT OPERATE WITH POWER WINDOW MASTER SWITCH (MANUAL OR AUTOMATIC OPERATION CAN NOT BE PERFORMED)
For Test A, see TEST A: WINDOW DOES NOT OPERATE WITH POWER WINDOW MASTER SWITCH (MANUAL OR AUTOMATIC OPERATION CAN NOT BE PERFORMED) table.
| Trouble | Suspect Area |
|---|---|
| All Windows Do Not Operate With Master Switch Of Each Window | PWS Terminal Of Body ECU: Body ECU PWS Terminal B8 Output Master Switch PW Terminal 15 Output Check Wire Harness Between PWS Terminal & PW Terminal 15 |
| Windows Except Driver's Do Not Operate With Master Switch Of Each Window | Master Switch (Window Lock Circuit) Faulty: Check Continuity Between Master Switch PW Terminal 15 & W/L2 Terminal 10 Check Wire Harness Between W/L2 Terminal Of Master Switch Terminal 10 & PCT Terminals Of Each Power Window Switch |
| Only Specific Window Does Not Operate (Manual & Automatic Operation Can Not Be Performed) | (Scheme 1) |
| Only Specific Window Does Not Operate (Automatic Operation Can Not Be Performed) | When Jam Protection Sensor Is Defective, Automatic Function As A Fail-Safe Function Might Be Unable (Master Switch, Power Window & Door Control ECU) |
TEST A: WINDOW DOES NOT OPERATE WITH POWER WINDOW MASTER SWITCH (MANUAL OR AUTOMATIC OPERATION CAN NOT BE PERFORMED)
Scheme 1
For Test C, see TEST C: KEY RELATED POWER WINDOW OPERATION DOES NOT OPERATE WITH DRIVER SIDE DOOR KEY CYLINDER (MASTER SWITCH OPERATION IS NORMAL) table.
| Trouble | Suspect Area |
|---|---|
| Door Lock System Does Not Operate With Door Key | (1) |
| Door Lock System Does Not Operate With Door Key | Fail-Safe Mode Caused By Error On Jam Protection Sensor Of Power Window (Operation Of Power Window With Multi-Function Transmitter Is Prohibited) HINT: DTC 31-38 Output (2) |
| (1) See POWER DOOR LOCKS, TRUNK LID & FUEL DOOR RELEASE article under DOOR LOCKS & ANTI-THEFT SYSTEMS in ACCESSORIES & EQUIPMENT. (2) See MULTIPLEX COMMUNICATION SYSTEM article under COMMUNICATION DEVICES in ACCESSORIES & EQUIPMENT. | |
| (1) | See POWER DOOR LOCKS, TRUNK LID & FUEL DOOR RELEASE article under DOOR LOCKS & ANTI-THEFT SYSTEMS in ACCESSORIES & EQUIPMENT. |
| (2) | See MULTIPLEX COMMUNICATION SYSTEM article under COMMUNICATION DEVICES in ACCESSORIES & EQUIPMENT. |
TEST C: KEY RELATED POWER WINDOW OPERATION DOES NOT OPERATE WITH DRIVER SIDE DOOR KEY CYLINDER (MASTER SWITCH OPERATION IS NORMAL)
TEST E: WINDOW MOVES DOWN WITHOUT BEING ORDERED DURING UP OPERATION
For Test E, see TEST E: WINDOW MOVES DOWN WITHOUT BEING ORDERED DURING UP OPERATION table.
| Trouble | Suspect Area |
|---|---|
| After Window Is Fully Closed, It Starts To Move Down | Power Window Motor Limit Switch Wire Harness Faulty: Power Window Motor Reset Switch Is Reset Driver Door Control ECU LMT Terminal B12 |
| Window Moves Down During Up Operation | (Scheme 2) |
TEST E: WINDOW MOVES DOWN WITHOUT BEING ORDERED DURING UP OPERATION
Scheme 2
POWER WINDOW MOTOR PTC OPERATION (FRONT)
- Inspect the power window motor PTC operation.
- Disconnect the connector from the master switch.
- Connect the positive (+) lead from the battery to terminal No. 2 and negative (-) lead to terminal No. 1 on the wire harness side connector and raise the window to full closed position. See «CONNECTOR IDENTIFICATION»(ref-153002-S27397226362003031000000) .
- Continue to apply voltage and check that there is a PTC operation noise within approximately 4-90 seconds.
- Reverse the polarity and check that the window begins to descend within approximately 60 seconds.
- If operation is not as specified, replace the motor. See «FRONT DOOR POWER WINDOW REGULATOR»(ref-153002-S33531785362003031100000) under COMPONENT TESTS.
POWER WINDOW MOTOR PTC OPERATION (REAR)
- Inspect the power window motor PTC operation.
- Disconnect the connector from the rear door ECU.
- Connect the positive (+) lead from the battery to terminal No. 3 and the negative (-) lead to terminal No. 1 on the wire harness side connector, and raise the window to full closed position. See «CONNECTOR IDENTIFICATION»(ref-153002-S27397226362003031000000) .
- Continue to apply voltage and check that there is a PTC operation noise within approximately 4-90 seconds.
- Reverse the polarity and check that the window begins to descend within approximately 60 seconds.
- If operation is not as specified, replace the motor. See «REAR DOOR POWER WINDOW REGULATOR»(ref-153002-S15100463952003031100000) under COMPONENT TESTS.