POWER WINDOW MOTOR INSPECTION


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Front Power Window Motor

1.  Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.)

2.  Remove the front door trim. (See FRONT DOOR TRIM REMOVAL/INSTALLATION.)

3.  Disconnect the front power window motor connector.

4.  Apply battery positive voltage and connect the ground to front power window motor terminals E and F, and then inspect the front power window motor operation.

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•  If the front power window motor does not operate as indicated in the table, replace it.

Operation

Terminal

E

F

Close
B+
Ground
Open
Ground
B+

5.  Connect the front power window motor connector.

6.  Connect the power window main switch connector. (See POWER WINDOW MAIN SWITCH REMOVAL/INSTALLATION.)

7.  Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.)

8.  Operate the front power window motor and verify the wave patterns for terminals A and B.

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•  Terminal:
A, B(+) ↔ ground (-)
•  Oscilloscope setting: 2 V/DIV (Y), 1 ms/DIV (X), DC range
•  If the malfunction, replace the front power window motor.


Rear Power Window Motor

1.  Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.)

2.  Remove the rear door trim. (See REAR DOOR TRIM REMOVAL/INSTALLATION.)

3.  Disconnect the rear power window motor connector.

4.  Apply battery positive voltage and connect the ground to rear power window motor terminals E and F, and then inspect the rear power window motor operation.

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•  If the rear power window motor does not operate as indicated in the table, replace it.

Operation

Terminal

E

F

Close
B+
Ground
Open
Ground
B+

5.  Connect the rear power window motor connector.

6.  Connect the power window subswitch connector. (See POWER WINDOW SUBSWITCH REMOVAL/INSTALLATION.)

7.  Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.)

8.  Operate the rear power window motor and verify the wave patterns for terminals A and B.

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•  Terminal:
A, B(+) ↔ ground (-)
•  Oscilloscope setting: 2 V/DIV (Y), 1 ms/DIV (X), DC range
•  If the malfunction, replace the rear power window motor.