Master Switch Input Test
Note. The power window control unit is built into the power window master switch, and it only controls the driver's window operations.
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- Remove the switch panel from the door panel (see FRONT DOOR OUTER HANDLE REPLACEMENT ).
- Disconnect the 20P connector (A) from the master switch (B).
- Inspect the connector and socket terminals to be sure they are all making good contact. If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system. If the terminals look OK, go to step 4.
- Reconnect the 20P connector to the switch, and perform the following input tests. If any test indicates a problem, find and correct the cause, then recheck the system. If all the input tests prove OK, go to step 5.
- Disconnect the 20P connector from the switch connector, and make these input tests at the connector. If any test indicates a problem, find and correct the cause, then recheck the system. If all the input tests prove OK, the control unit must be faulty: replace the power window master switch.
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- Remove the switch panel (see FRONT DOOR OUTER HANDLE REPLACEMENT ).
- Disconnect the 20P connector from the power window master switch.
- Check for continuity between the terminals in each switch position according to the tables. Driver's Switch: The driver's switch is combined with the control unit so you cannot isolate the switch to test it. Instead, run the master switch input test procedures (see Master Switch Input Test ). If the tests are normal, the driver's switch must be faulty; replace the switch.
- If the continuity is not as specified, remove the three screws and replace the switch.
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- Remove the switch panel from the door panel (see FRONT DOOR PANEL REMOVAL/INSTALLATION ).
- Disconnect the 5P connector (A) from the power window switch (B).
- Remove the two screws and the passenger's power window switch.
- Check for continuity between the terminals in each switch position according to the table. Front passenger's, Right
- If the continuity is not as specified, remove the two screws and replace the switch.
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- Remove the driver's door panel (see FRONT DOOR PANEL REMOVAL/INSTALLATION ).
- Disconnect the 6P connector (A) from the driver's window motor.
- Test the motor in each direction by connecting battery power and ground according to the table. NOTE: To prevent damage to the motor, disconnect one lead as soon as the motor stops running.
- If the motor does not run or fails to run smoothly, replace it.
Pulser Test
- Reconnect the 6P connector to the window motor, and reconnect the 20P connector to the power window master switch.
- Check for voltage between the terminals. There should be battery voltage between the No. 6 (+) and No. 4 (-) terminals when the ignition switch is turned ON (II). Connect an analog voltmeter between the No. 5 (+) and No. 4 (-) terminals, and run the window motor down or up. The voltmeter needle should move back and forth alternately between 0 V and about 5 V (a digital voltmeter should show about 2.5 V). Connect an analog voltmeter between the No.3 (+) and No. 4 (-) terminals, and run the window motor down or up. The voltmeter needle should move back and forth alternately between 0 V and about 5 V (a digital voltmeter should show about 2.5 V).
- If the voltage is not as specified, replace the driver's power window motor.
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- Remove the passenger's door panel (see FRONT DOOR PANEL REMOVAL/INSTALLATION ).
- Disconnect the 2P connector (A) from the passenger's power window motor.
- Test the motor in each direction by connecting battery power and ground according to the table. NOTE: To prevent damage to the motor, disconnect one lead as soon as the motor stops running.
- If the motor does not run or fails to run smoothly, replace it.