Power Window Control System - Diagnostics: Pre-Check

POWER WINDOW CONTROL SYSTEM DESCRIPTION
1. The power window control system controls the power windows UP/DOWN function by using regulator motors.
  Main controls for this system are the master switch built into the driver's door and regulator switches built into passenger's doors. Pressing any of these regulator switches or the driver side door window switch mounted on the master switch transmits an UP/DOWN signal to the regulator motor for the corresponding power window, which then operates the power window UP/DOWN. Pressing any switch for the other power windows except the driver's power window mounted on the master switch transmits a remote UP/DOWN signal to the body ECU via the BEAN line. Then the body ECU transmits this remote signal to the regulator switch for the corresponding power window via the BEAN line to activate the motor to open/close the power window.
2. The power window control system has the following functions:
  
  Fig 1: Power Window Control System Functions Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
CHECK WINDOW LOCK SWITCH
1. Check that the passenger side power window and rear power windows operation are disabled when the window lock switch of the power window master switch is pressed.
2. Check that the passenger side power window and rear power windows can be operated when the window lock switch is pressed again.
CHECK MANUAL UP/DOWN FUNCTION
1. Check that the driver side power window operates as follows:
  Standard:
  
  Fig 3: Checking Driver Side Power Window Operates Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Check that the power windows except the driver side power window operate as follows:
  Standard:
  
  Fig 4: Checking Power Windows Except Driver Side Power Window Operates Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
CHECK AUTO UP/DOWN FUNCTION
1. Check that the driver side power window operates as follows:
  Standard:
  
  Fig 5: Checking Driver Side Power Window Operates Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Check that the power windows except the driver side power window operate as follows:
  Standard:
  
  Fig 6: Checking Power Window Except Driver Side Power Window Operates Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
CHECK REMOTE MANUAL UP/DOWN FUNCTION
1. Check that the power windows except the driver side power window operate as follows:
  Standard:
  
  Fig 7: Checking Remote Manual Up/Down Function Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
CHECK REMOTE AUTO UP/DOWN FUNCTION
1. Check that the power windows except the driver side power window operate as follows:
  Standard:
  
  Fig 8: Checking Remote Auto Up/Down Function Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
CHECK MANUAL UP/DOWN FUNCTION USING DRIVER SIDE DOOR LOCK KEY CYLINDER
1. Check that all power windows and sliding roof (standard type only) operate as follows, when the key is inserted into the driver side door lock key cylinder.
  Standard:
CHECK MANUAL DOWN FUNCTION USING TRANSMITTER
1. Check that all power windows and sliding roof (standard type only) operate as follows when operating the transmitter.
  Standard:
  
  HINT:
  
  For a sign for starting operation, the wireless door lock buzzer sounds once (answer-back).
  
  Fig 10: Checking Manual Down Function Using Transmitter Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
CHECK POWER WINDOW OPERATION FUNCTION AFTER IGNITION SWITCH IS TURNED OFF
1. When both of the following conditions are fulfilled, check that the power windows can be operated even after the ignition switch is turned OFF.
  1. Within 45 seconds after the ignition switch is turned OFF.
  2. The front doors are closed.
CHECK JAM PROTECTION FUNCTION
HINT:

The jam protection function prevents any part of your body from getting caught by accident between the door frame and the door glass during power window operation.

NOTE: If the power window motor has just been reset, raise and lower the door glass several times using MANUAL function before performing the check.
1. Check that the door glass goes down by approx. 50 mm (1.97 in.) right when something gets caught between the door frame and door glass during power window operation. However, when the opening between the door frame and the door glass is less than 200 mm (7.87 in.), the door glass continues to go down and does not stop until an opening of 200 mm (7.87 in.) is achieved.
  Operative conditions:
  - AUTO UP
  - AUTO UP function after the ignition switch is turned OFF
  - MANUAL UP function after the ignition switch is turned OFF
  - MANUAL UP function using the driver side door lock key cylinder
Fig 11: Checking Jam Protection Function
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
CHECK POWER WINDOW FAIL-SAFE FUNCTION
HINT:

If there is a malfunction in the power window system, some of the power window functions will be disabled.

Driver side power window:

Fig 12: Checking Power Window Fail-Safe Function (Driver Side Power Window) Table
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Power windows except driver side power window:

Fig 13: Checking Power Window Fail-Safe Function (Power Windows Except Driver Side Power Window) Table
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

DIAGNOSIS SYSTEM

Description
1. Data of the system can be read in the Data Link Connector 3 (DLC3) of the vehicle.
  Therefore, when the system seems to be malfunctioning, use the hand-held tester to check for a malfunction and repair it.

Fig 14: Identifying DLC3

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Inspect the DLC3.

HINT:

The vehicle's ECM uses ISO 9141-2 communication protocol.

The terminal arrangement of the DLC3 complies with SAE J1962 and matches the ISO 9141-2 format.

DLC3

Tester Connection	Condition	Specified Condition
7 (Bus + line) - 5 (Signal ground)	During communication	Pulse generation
4 (Chassis ground) - Body ground	Constant	Below 1 Ω
5 (Signal ground) - Body ground	Constant	Below 1 Ω
16 (B+) - Body ground	Constant	10 to 14 V

HINT:

If the screen displays UNABLE TO CONNECT TO VEHICLE after you have connected the cable of the hand-held tester to the DLC3, turned the ignition switch ON and used the hand-held tester, the problem may be on the vehicle side or tester side.

If communication is normal when the tester is connected to another vehicle, inspect the DLC3 of the original vehicle.
If communication is still impossible when the tester is connected to another vehicle, the problem is probably in the tester itself, so consult the Service Department listed in the tester's instruction manual.

Check the battery voltage.
Standard: 11 to 14 V

If the voltage is below 11 V, replace the battery before proceeding.

USING HAND-HELD TESTER
1. Connect the hand-held tester to the DLC3.
2. Monitor the ECU data by following the prompts on the tester screen.
  HINT:
  
  The hand-held tester has a "Snapshot" function which records the monitored data.
  
  Refer to the hand-held tester operator's manual for further details.

DATA LIST

HINT:

Using the DATA LIST displayed on the hand-held tester, you can read the value of the switch, sensor, actuator, etc. without parts removal. Reading the DATA LIST as the first step of troubleshooting is one way to shorten the labor time.

Connect the hand-held tester to the DLC3.
Turn the ignition switch ON.

Read the DATA LIST according to the display on the tester.

Standard:

Power window regulator master switch (Driver door ECU)

POWER WINDOW REGULATOR MASTER SWITCH (DRIVER DOOR ECU)

Item	Measurement Item/Display (Range)	Normal Condition
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/W AUTO SW	Driver door power window auto switch signal/ON or OFF
P P/W AUTO SW	Passenger door remote power window auto switch signal/ON or OFF	ON: Passenger door remote power window auto switch operates OFF: Passenger door remote power window auto switch does not operate
P P/W AUTO SW
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
RR P/W AUTO SW
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
RL P/W AUTO SW
P/W UP SW	Driver door power window manual up switch signal/ON or OFF	ON: Driver door power window manual up switch operates OFF: Driver door power window manual up switch does not operate
P/W UP SW	Driver door power window manual up switch signal/ON or OFF
P P/W UP SW	Passenger door remote power window manual up switch signal/ON or OFF	ON: Passenger door remote power window manual up switch operates OFF: Passenger door remote power window manual up switch does not operate
P P/W UP SW
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
RR P/W UP SW
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
RL P/W UP SW
P/W DOWN SW	Driver door power window manual down switch signal/ON or OFF	ON: Driver door power window manual down switch operates OFF: Driver door power window manual down switch does not operate
P/W DOWN SW
P P/W DOWN SW	Passenger door remote power window manual down switch signal/ON or OFF	ON: Passenger door remote power window manual down switch operates OFF: Passenger door remote power window manual down switch does not operate
P P/W DOWN SW
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
RR P/W DOWN SW
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
RL P/W DOWN SW
P/W LOCK SW	Power window lock switch signal/ON or OFF	ON: Power window lock switch in LOCK position OFF: Power window lock switch in UNLOCK position
P/W LOCK SW	Power window lock switch signal/ON or OFF
GLASS POS-1/4	Door glass position (Fully closed - 1/4 open) signal/OK or CAUTION	OK: Power window is going UP by manual operation CAUTION: CAUTION may be displayed even when no resistance is applied in each position. In this case there must be a foreign object stuck in that position
GLASS POS-1/4
GLASS POS-2/4	Door glass position (1/4 open - 2/4 open) signal/OK or CAUTION	OK: Power window is going UP by manual operation CAUTION: CAUTION may be displayed even when no resistance is applied in each position. In this case there must be a foreign object stuck in that position
GLASS POS-2/4
GLASS POS-3/4	Door glass position (2/4 open - 3/4 open) signal/OK or CAUTION	OK: Power window is going UP by manual operation CAUTION: CAUTION may be displayed even when no resistance is applied in each position. In this case there must be a foreign object stuck in that position
GLASS POS-3/4
GLASS POS-3/4	Door glass position (3/4 open - Fully open) signal/OK or CAUTION	OK: Power window is going UP by manual operation CAUTION: CAUTION may be displayed even when no resistance is applied in each position. In this case there must be a foreign object stuck in that position
GLASS POS-3/4
DOOR KEY PW UP	Door key-linked power window UP signal/AVAIL or NOT AVL	AVAIL: Door key-linked power window UP is available NOT AVL: Door key-linked power window UP is unavailable
DOOR KEY PW UP	Door key-linked power window UP signal/AVAIL or NOT AVL
DOOR KEY PW DOWN	Door key-linked power window DOWN signal/AVAIL or NOT AVL	AVAIL: Door key-linked power window DOWN is available NOT AVL: Door key-linked power window DOWN is unavailable
DOOR KEY PW DOWN	Door key-linked power window DOWN signal/AVAIL or NOT AVL
UP/WIRELESS	Power window UP w/transmitter signal/AVAIL or NOT AVL	AVAIL: Power window UP w/transmitter is available NOT AVL: Power window UP w/transmitter is unavailable
UP/WIRELESS	Power window UP w/transmitter signal/AVAIL or NOT AVL

Multiplex network body ECU

MULTIPLEX NETWORK BODY ECU

Item	Measurement Item/Display (Range)	Normal Condition
IG SW	Ignition switch signal/ON or OFF	ON: Key is in ON or START position OFF: Key is in OFF or ACC position
IG SW	Ignition switch signal/ON or OFF
D DOR CTY SW	Driver side door courtesy switch signal/ON or OFF	ON: Driver side door is open OFF: Driver side door is closed
D DOR CTY SW	Driver side door courtesy switch signal/ON or OFF
P DOR CYT SW	Passenger side door courtesy switch signal/ON or OFF	ON: Passenger side door is open OFF: Passenger side door is closed
P DOR CYT SW	Passenger side door courtesy switch signal/ON or OFF

ACTIVE TEST

HINT:

Performing the ACTIVE TEST using the hand-held tester allows you to operate the relay, VSV, actuator, etc. without parts removal. Performing the ACTIVE TEST as the first step of troubleshooting is one way to shorten the labor time.

It is possible to display the DATA LIST during the ACTIVE TEST.

Connect the hand-held tester to the DLC3.
Turn the ignition switch ON.

Perform the ACTIVE TEST according to the display on the tester.

Standard (Power window regulator master switch (Driver door ECU)):

STANDARD (POWER WINDOW REGULATOR MASTER SWITCH (DRIVER DOOR ECU))

Item	Test Detail
P/W UP/DOWN	Operates power window UP/DOWN

RESET (INITIALIZE) POWER WINDOW REGULATOR MOTOR
NOTE:
- Resetting the power window motor (initializing the pulse sensor) is necessary when the battery terminal is disconnected; when the power window regulator master switch, power window regulator switch, wire harness, power window regulator and power window motor are replaced or removed/installed; or when the PWR fuse, RR DOOR LH fuse, RR DOOR RH and ECU-B fuse are replaced. AUTO operation function, jam protection function and remote operation function via the power window regulator master switch do not operate without resetting.
- Be sure to reset the power window regulator motors using the power window switch on each door because the motors cannot be reset by remote operation using the power window master switch.
- In order to prevent a large amount of current from flowing in the wires, do not simultaneously reset 2 or more power window regulator motors.
- If the power window switch has been continuously operated for a long time, the power window regulator motor can stop so that no additional load will be applied to the motor. Continuing to operate the switch even after the motor has stopped will cause the switch to blink while restricting the AUTO UP/DOWN function and the remote UP/DOWN function. If this happens, reset the motor again after several minutes have passed.
- Whenever disconnecting the battery terminal, reset all the other systems besides the power window control system (See PRECAUTION ).
1. Turn the ignition switch ON.
2. Halfway open the power window by pressing the power window switch.
3. Fully pull up the switch until the power window is fully closed and continue to hold the switch for approx. 1 second after the power window is fully closed.
4. Check that the AUTO UP/DOWN function operates normally.
  If the AUTO UP/DOWN function operates normally, reset operations have been completed at this time. If not normal, follow steps (e) to (g) below.
5. Disconnect the negative battery terminal for 10 seconds.
6. Connect the battery terminal.
7. Perform the above steps a to d again.
  If the AUTO UP/DOWN function operates normally, reset operations have been completed at this time. If not normal, follow steps h to k below.
8. Turn the ignition switch ON.
9. Halfway open the power window by pressing the power window switch.
10. Fully pull up the switch until the power window is fully closed and continue to hold the switch for approx. 12 seconds after the power window is fully closed.
11. Check that the AUTO UP/DOWN function operates normally.