DOOR GLASS DOES NOT MOVE UP AND DOWN IN AUTOMATIC MODE [POWER WINDOW SYSTEM]

id0903a0929000

Note
•  Perform the following inspection for the power window system component parts of windows where the door glass cannot be operated automatically.

Description
Door glass does not move up and down in automatic mode
Possible Causes
•  Power window motor malfunction
•  Open circuit in wiring harness between the following terminals:
Driver-side:
?  Power window main switch terminal 2D and power window motor terminal B
?  Power window main switch terminal 1A and power window motor terminal D
?  Power window main switch terminal 1I and power window motor terminal A
?  Power window main switch terminal 2F and power window motor terminal C
Except for driver-side:
?  Power window subswitch terminal F and power window motor terminal B
?  Power window subswitch terminal J and power window motor terminal D
?  Power window subswitch terminal L and power window motor terminal A
?  Power window subswitch terminal D and power window motor terminal C
•  Short to power supply in wiring harness between the following terminals:
Driver-side:
?  Power window main switch terminal 2D and power window motor terminal B
?  Power window main switch terminal 1A and power window motor terminal D
?  Power window main switch terminal 1I and power window motor terminal A
?  Power window main switch terminal 2F and power window motor terminal C
Except for driver-side:
?  Power window subswitch terminal F and power window motor terminal B
?  Power window subswitch terminal J and power window motor terminal D
?  Power window subswitch terminal L and power window motor terminal A
?  Power window subswitch terminal D and power window motor terminal C
•  Short to ground in wiring harness between the following terminals:
Driver-side:
?  Power window main switch terminal 2D and power window motor terminal B
?  Power window main switch terminal 1A and power window motor terminal D
?  Power window main switch terminal 1I and power window motor terminal A
?  Power window main switch terminal 2F and power window motor terminal C
Except for driver-side:
?  Power window subswitch terminal F and power window motor terminal B
?  Power window subswitch terminal J and power window motor terminal D
?  Power window subswitch terminal L and power window motor terminal A
?  Power window subswitch terminal D and power window motor terminal C
•  Power window main switch malfunction
•  Power window subswitch malfunction
Note
•  The automatic function and the IG OFF timer function do not operate while the power window switch is in fail-safe mode. The fail-safe operates when sensor 1, and/or sensor 2, and/or the sensor power supply malfunctions.
•  Sensor 1 and/or 2 malfunction
?  When the door glass is moving up and down, the power window switch cannot sense a pulse signal from sensor 1 during the time it senses 5 pulses (2.5 cycles) from sensor 2.
?  When the door glass is moving up and down, the switch cannot sense a pulse signal from sensor 2 during the time it senses 5 pulses (2.5 cycles) from sensor 1.
?  There are three abnormal pulses in a pulse signal while the door glass is moving up or down.
?  There are 20 cycle pulses from a closed position while the door glass is moving up.
?  There is no pulse signal for 1 s after the door glass is moved down.

Diagnostic procedure

STEP

INSPECTION

ACTION
1
INSPECT WHETHER POWER WINDOW SWITCH ENTERS FAIL-SAFE MODE OR NOT
•  Switch the ignition to off for 3 minutes.
•  Switch the ignition ON (engine off or on).
•  Initialize the power window system.
•  Operate the auto open/close function.
•  Does the power window operate properly?
Yes
System is normal.
The power window system auto open/close function does not operate temporarily for any of the following reasons:
•  The power window switch is operated while the power window motor protection circuit (integrated in power window motor) is operating.
•  The power window main switch power supply is cut off by disconnection of the negative battery terminal or removing the fuse.
No
Go to the next step.
2
VERIFY WHETHER MALFUNCTION IS IN WIRING HARNESS (BETWEEN POWER WINDOW SWITCH AND POWER WINDOW MOTOR) OR ELSEWHERE
•  Switch the ignition ON (engine off or on).
•  Measure the pulse at the following power window switch terminals (sensor 1 signal):
?  Driver-side (at power window main switch): 2D
?  Except driver-side (at suspected door’s power window subswitch): F
•  Is the pulse normal when the door glass is moving up and down?
Yes
Go to step 7.
No
Go to the next step.
3
VERIFY SENSOR 1 OUTPUT SIGNAL
•  Switch the ignition ON (engine off or on).
•  Measure the pulse at the following power window motor terminals B (sensor 1 signal):
•  Is the pulse normal when the door glass is moving up and down in manual mode?
Yes
Go to the next step.
No
Replace the power window motor, then go to Step 12.
4
INSPECT WIRING HARNESS BETWEEN POWER WINDOW SWITCH AND POWER WINDOW MOTOR FOR CONTINUITY
•  Switch the ignition to off.
•  Disconnect the power window switch connector.
•  Is there continuity between the following power window switch terminals (for driver’s door at power window main switch, for except driver’s door at suspected door’s power window subswitch) and power window motor terminals?
?  Driver-side:
•  2D—B (sensor 1 signal)
•  1A—D (sensor power supply)
•  1I—A (ground signal)
?  Except driver-side:
•  F—B (sensor 1 signal)
•  J—D (sensor power supply)
•  L—A (ground signal)
Yes
Go to the next step.
No
Repair the wiring harness between the power window switch and power window motor, then go to Step 12.
5
VERIFY WHETHER MALFUNCTION IS IN WIRING HARNESS (BETWEEN POWER WINDOW SWITCH AND POWER WINDOW MOTOR) OR POWER WINDOW SWITCH
•  Switch the ignition ON (engine off or on).
•  Inspect the voltage at the following power window switch terminals (for driver’s door at power window main switch, for except driver’s door at suspected door’s power window subswitch):
?  Driver-side
•  2D (sensor 1 signal)
•  1I (ground signal)
?  Except driver-side
•  F (sensor 1 signal)
•  L (ground signal)
•  Is the voltage B+?
Yes
Repair the wiring harness between the power window switch and power window motor, then go to Step 12.
No
Go to the next step.
6
VERIFY WHETHER MALFUNCTION IS IN WIRING HARNESS (BETWEEN POWER WINDOW SWITCH AND POWER WINDOW MOTOR) OR ELSEWHERE
•  Is there continuity between the following power window switch terminals (wiring harness-side) (for driver’s door at power window main switch, for except driver’s door at suspected door’s power window subswitch) and ground?
?  Driver-side
•  2D (sensor 1 signal)
•  1A (sensor power supply)
?  Except driver-side
•  F (sensor 1 signal)
•  J (sensor power supply)
Yes
Replace the wiring harness between the power window switch and power window motor, then go to Step 12.
No
Replace the power window switch (open circuit or short to power supply in power window switch), then go to Step 12.
7
VERIFY WHETHER MALFUNCTION IS IN POWER WINDOW SWITCH OR ELSEWHERE
•  Switch the ignition ON (engine off or on).
•  Measure the pulse at the following power window switch terminals (sensor 2 signal) (for driver’s door at power window main switch, for except driver’s door at suspected door’s power window subswitch):
?  Driver-side: 2F
?  Except driver-side: D
•  Is the pulse normal when the door glass is moving up and down?
Yes
Replace the power window switch (malfunction in power window switch automatic mode control), then go to Step 12.
No
Go to the next step.
8
VERIFY SENSOR 2 OUTPUT SIGNAL
•  Switch the ignition ON (engine off or on).
•  Measure the pulse at power window motor terminal C (sensor 2 signal).
•  Is the pulse normal when door glass is moving up and down?
Yes
Go to the next step.
No
Replace the power window motor, then go to Step 12.
9
VERIFY WHETHER MALFUNCTION IS IN WIRING HARNESS (BETWEEN POWER WINDOW SWITCH AND POWER WINDOW MOTOR) OR ELSEWHERE
•  Switch the ignition to off (LOCK).
•  Disconnect the power window switch connector and power window motor connector.
•  Is there continuity between the following power window switch terminals (for driver’s door at power window main switch, for except driver’s door at suspected door’s power window subswitch) and power window motor terminals?
?  Driver-side: 2F and C (sensor 2 signal)
?  Except driver-side: D and C (sensor 2 signal)
Yes
Go to the next step.
No
Repair the wiring harness between the power window switch and power window motor, then go to Step 12.
10
VERIFY WHETHER MALFUNCTION IS IN WIRING HARNESS (BETWEEN POWER WINDOW SWITCH AND POWER WINDOW MOTOR) OR ELSEWHERE
•  Is there continuity between the following power window switch terminals (sensor 2 signal) (for driver’s door at power window main switch, for except driver’s door at suspected door’s power window subswitch) and ground?
?  Driver-side: 2F
?  Except driver-side: D
Yes
Repair the wiring harness between the power window switch and power window motor, then go to Step 12.
No
Go to the next step.
11
VERIFY WHETHER MALFUNCTION IS IN WIRING HARNESS (BETWEEN POWER WINDOW SWITCH AND POWER WINDOW MOTOR) OR POWER WINDOW SWITCH
•  Switch the ignition ON (engine off or on).
•  Measure the voltage at the following power window switch terminals (sensor 2 signal) (for driver’s door at power window main switch, for except driver’s door at suspected door’s power window subswitch):
?  Driver-side: 2F
?  Except driver-side: D
•  Is the voltage B+?
Yes
Repair the wiring harness between the power window switch and front driver-side power window motor, then go to the next step.
No
Replace the power window switch (open circuit or short to power supply/ground in power window switch), then go to the next step.
12
REINSPECT MALFUNCTION SYMPTOM AFTER REPAIR
•  Is malfunction no longer present?
Yes
•  Troubleshooting completed.
•  Explain repairs to the customer.
No
Reinspect malfunction symptoms, then repeat from Step 1 if malfunction recurs.


Inspection Using an Oscilloscope

aaxjjw00012385
Driver-side
•  Power window main switch: 2D, 2F (+) ? ground (-)
•  Power window motor: B, C (+) ? ground (-)
•  Oscilloscope setting: 2 V/DIV (Y), 1 ms/DIV (X), DC range
Except driver-side
•  Power window subswitch: F, D (+) ? ground (-)
•  Power window motor: B, C (+) ? ground (-)
•  Oscilloscope setting: 2 V/DIV (Y), 1 ms/DIV (X), DC range