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GENERAL INFORMATION
INTRODUCTION
. . . . . . . . . . . . . . . . . . . . . . . . 1
DIAGNOSIS AND TESTING
VOLTAGE
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
WINDOW MOTOR . . . . . . . . . . . . . . . . . . . . . . . 1
GENERAL INFORMATION
INTRODUCTION
Front and rear door window lift motors are of the
permanent magnet type. A battery positive and neg-
ative connection to either of the two motor terminals
will cause the motor to rotate in one direction.
Reversing current through these same two connec-
tions will cause the motor to rotate in the opposite
direction.
Each individual motor is grounded through the
master switch.
DIAGNOSIS AND TESTING
VOLTAGE
The following circuit test sequence determines
whether or not voltage is continuous through the
body harness to switch.
(1) Remove the driver door trim panel. Refer to
Group 23, Body for proper procedures.
(2) Carefully separate wiring harness connector
from switch body. Refer to Group 8W, Wiring Dia-
grams.
(3) Using a voltmeter, connect the ground lead to
the Pin 10 of the wiring harness connector.
(4) Using the positive lead, check Pin 1 of the har-
ness connector for battery voltage. If OK, go to Win-
dow Switch Test below. If not OK, check 20 amp
circuit breaker in the Junction Block, if the circuit
breaker is OK, repair wire as necessary. For wiring,
specific connector type and location, refer to Group
8W, Wiring Diagrams.
WINDOW MOTOR
(1) Remove door trim panel, refer to Group 23
Body for removal procedures.
(2) Connect positive (+) lead from a test battery to
either of the two motor terminals.
(3) Connect negative (-) lead from test battery to
remaining motor terminal.
POWER WINDOWS
CONTENTS
page
WINDOW SWITCH . . . . . . . . . . . . . . . . . . . . . . . 1
REMOVAL AND INSTALLATION
WINDOW MOTOR . . . . . . . . . . . . . . . . . . . . . . . 2
WINDOW SWITCH . . . . . . . . . . . . . . . . . . . . . . . 3
(4) The motor should now rotate in one direction to
either move window up or down.
position and motor is connected so as to move it in
UP direction no movement will be observed.
in DOWN direction no movement will be observed
if window is already in full DOWN position.
and window should now move. If window does not
move, remove motor. See below for motor removal
from vehicle.
(5) If window moved completely up or down, the
test leads should be reversed one more time to com-
plete a full window travel inspection.
(6) If window does not move, check to make sure
that it is free.
(7) It is necessary that the window be free to slide
up and down in the glass channels. If the window is
not free to move up and down, the window lift motor
will not be able to move the glass.
(8) To determine if the glass is free is to disconnect
the regulator from the glass lift plate. Remove the
two attaching screws, and slide the window up and
down by hand.
WINDOW SWITCH
For switch testing, remove the switch from its
mounting, refer to Switch Removal. Using an ohm-
meter, refer to Window Switch Continuity Charts to
determine if continuity is correct (Fig. 1) and (Fig. 2).
If the results are not obtained, replace the switch.
The master window switch has an Auto-Down fea-
ture. Actuation of the master switch to the second
down position will move the drivers side window
completely down. The electronic switch will automat-
ically disconnect the motor approximately 1 second
after the window bottoms out. Failure of the elec-
tronic switch to detect stall current, will cause the
switch to disconnect after approximately 13 seconds.
The auto down function can be canceled by any
movement of that switch.
POWER WINDOWS
(a) If window happens to already be in full UP
(b) Likewise, motor connected to move window
(c) Reverse battery leads in Step 1 and Step 2
8S - 1
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