Suzuki XL7 2007 Service Manual page 2577

Poor electrical connections or wiring cause most
intermittent conditions. Perform a careful visual/physical
check for the following conditions:
• Poor mating of the connector halves or a terminal not
fully seated in the connector body
• An improperly formed or damaged terminal
• Reform or replace connector terminals in the problem
circuit in order to ensure proper contact tension.
• Poor terminal to wire connection requires removing
the terminal from the connector body in order to
perform the check.
Power Windows Inoperative - All
Diagnostic Fault Information
Perform the "Diagnostic System Check - Vehicle Diagnostic Information: " prior to using this diagnostic procedure.
Circuit
Main Power Window Switch Voltage Supply
Rear Window Lockout Switch Control
Rear Window Switch Control
Front Window Motor Control
Rear Window Motor Control
Main Power Window Switch Ground
1. Front Power Window Inoperative
2. Rear Power Window Inoperative
Circuit/System Description
The power window system will operate any time the
ignition is the ACC or RUN position. The main power
window switch located in the console contains individual
window switches for each of the power windows. All
windows may be controlled up and down from the main
power window switch. The individual rear passenger
power window switches will only control the up and down
operation of their respective power window.
Each power window contains a reversible power window
motor. The direction the window travels is dependent
upon the polarity of the supply voltage. By reversing
polarity of the supply voltage the window motor will move
up or down. Each power window motor is internally
circuit breaker protected.
Battery voltage is supplied to the main power window
switch through the accessory voltage supply circuit. The
main power window switch also receives a constant
ground source. The power window motor control circuits
are connected to ground through the normally closed up
and down contacts of the main power window switch.
When the main power window switch is placed in the
down position, the power window motor down control
circuit is switched to 12 volts which is applied to the
down side of the power window motor. Since the other
side of the power window motor is connected to ground
through the normally closed contacts of the up switch,
the window travels down. By placing the power window
switch in the up position, the polarity of the power
window motor is reversed and the window travels up.
Use a scan tool in order to help detect intermittent
conditions. The scan tool has several features that can
be used to locate an intermittent condition. The snapshot
feature can capture and store data parameters within the
scan tool when the malfunction occurs. This information
can then be reviewed in order to see what caused the
malfunction.
Symptom List
• "Rear Window Defogger Inoperative"
• "Power Windows Inoperative - All"
Short to Open/High
Ground Resistance
1, 2 1, 2
2 2
2 2
1 1
2 2
— 1, 2
The driver's window switch has an express-down feature
that allows the window to be lowered completely without
holding the switch. The switch is labeled AUTO. Press
the bottom of the switch part way and release it and the
driver's window will open a small amount. Press the
switch all the way down and release it and the window
will go completely down automatically.
To stop the window while it is lowering, press and
release the top of the switch
Reference Information
Schematic Reference
"Moveable Window Schematics"
Connector End View Reference
"Window Systems Connector End Views"
Description and Operation
"Power Windows Description and Operation"
Electrical Information Reference
• "Circuit Testing: "
• "Connector Repairs: "
• "Testing for Intermittent Conditions and Poor
Connections: "
• "Wiring Repairs: "
Glass / Windows / Mirrors:
Signal
Short to Voltage
Performance
—
—
2
1
2
1, 2
9E-29
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—
—
—
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