Description
Power window system uses a permanent magnet motor to operate each window. Motor operation is controlled by a master switch assembly alone or in combination with individual window switches. Window is lifted or lowered depending on polarity of current applied to window motor.
Some models use a control module to access an express mode of operation. When left front window switch is held in down position for .3 second, module activates relay to apply full battery voltage to window motor. This provides current to quickly and fully open window.
Operation
When ignition switch is in RUN position, power for window system is supplied to master switch assembly through fuse block 30-amp circuit breaker. When any master switch is operated, power is applied through related window switch to motor, driving drive motor in either direction to either raise or lower window. Each motor is protected by an internal circuit breaker which will reset after switch is released (voltage removed).
SYSTEM CHECK
- Before beginning system check, turn ignition on. Ensure there is battery voltage from POWER WINDOW (30-amp) circuit breaker, located in fuse block. Ensure master switch ground circuit is complete.
- With all windows closed, turn ignition switch to RUN position. Briefly (less than .3 second) press left front window switch down. Window should descend a small distance, then stop.
- Press left front window switch down and release (more than .3 second). Window should descend completely (express mode).
- Press left front window switch up. Window should raise as long as switch is held up, then stop when switch is released (no express). Repeat step 3). While window is moving down in express mode, press switch upward. Window should stop express decent.
- Lower and raise other windows from master switch. All windows should operate quietly and smoothly through full range of travel.
- Lower and raise each window from window switches. All windows should operate quietly and smoothly through full range of travel. Note any symptoms and proceed to SYMPTOM DIAGNOSIS.
None Of The Windows Operate
Go to TEST 1 under TESTING.
Left Front Window Does Not Operate
Go to TEST 2 under TESTING.
Right Front Window Does Not Operate
Go to TEST 3 under TESTING.
Left Rear Window Does Not Operate
Go to TEST 4 under TESTING.
Right Rear Window Does Not Operate
Go to TEST 5 under TESTING.
Window(s) Do Not Operate From Individual Switch But Operate
From Master Switch
Go to TEST 6 under TESTING.
Left Front Window Operates But With No Express Mode
On models without power window control module, replace master switch assembly. On models with power window control module, check for open in power feed to control module (Brown wire) circuit. If circuit is okay, replace power window control module.
Window(s) Operate From Individual Switches But Do Not Operate
From Master Switch
Replace Master Switch Assembly.
TESTING
Note. To identify specific circuits, see WIRING DIAGRAMS .
TEST 1
- With ignition switch in RUN position, connect a test light between master switch Brown wire connector terminal and ground. If light comes on, go to step 2). If light does not come on, check for poor connection at master switch. If connection is okay, repair open in Brown wire between POWER WINDOW (30-amp) circuit breaker and master switch.
- Connect a test light between master switch Brown wire connector terminal and master switch Black wire (ground) connector terminal. If light comes on, check for poor connections at master switch. If connections are okay, replace master switch. If light does not come on, check for poor connections at master switch. If connections are okay, repair open in Black wire between master switch and ground.
TEST 2
- With ignition switch in RUN position, connect a test light between master switch Dark Blue wire connector terminal and Brown wire connector terminal (Gray wire on models with power window control module). Press left front window switch (on master switch) up then down.
- If light does not come on in both directions, replace master switch. If light comes on in both directions, on models with power window control module, go to step 3). On models without power window control module, check for open in Dark Blue and Brown wires between master switch and left front window motor. If wires are okay, replace motor.
- Disconnect power window control module connector. Connect a test light between master switch Brown wire connector terminal and ground. If light comes on, go to step 4). If light does not come on, repair open in Brown wire between POWER WINDOW (30-amp) circuit breaker and master switch.
- Connect a test light between master switch Gray wire connector terminal and ground. Press left front window switch (on master switch) down. If light comes on, go to step 5). If light does not come on, repair open in Gray wire between master switch and power window control module.
- Connect a test light between master switch Dark Blue wire connector terminal and ground. Press left front window switch (on master switch) up. If light comes on, go to step 6). If light does not come on, repair open in Dark Blue wire between master switch and power window control module.
- Reconnect power window control module. Disconnect left front window motor connector. Connect a test light between left front window motor Brown wire connector terminal and ground. Press left front window switch (on master switch) down. If light comes on, go to step 7). If light does not come on, check for open in Brown wire between power window control module and left front window motor. If wire is okay, replace power window control module.
- Connect a test light between left front window motor Dark Blue wire connector terminal and ground. Press left front window switch (on master switch) up. If light comes on, replace left front power window motor. If light does not come on, repair open in Dark Blue wire between power window control module and left front window motor.
TEST 3
- Disconnect right front window switch connector. With ignition switch in RUN position, connect a test light between right front window switch Light Blue wire connector terminal and Tan wire connector terminal. Press right front window switch (on master switch) up then down.
- If light comes on in both directions, go to step 3). If light does not come on in both directions, check for open in Light Blue and Tan wires between master switch and right front window switch. If wires are okay, replace master switch. 3) Connect a jumper wire between right front window switch connector Light Blue wire and Dark Blue wire (going to right front window motor). Connect a jumper wire between right front window switch connector Tan wire and Brown wire.
- Press right front window switch (on master switch) up and down. If window motor operates, replace right front window switch. If window motor does not operate, check for open in Dark Blue and Brown wires between right front window switch and right front window motor. If wires are okay, replace motor.
TEST 4
- Disconnect left rear window switch connector. With ignition switch in RUN position, connect a test light between left rear window switch Dark Green wire connector terminal and Purple wire connector terminal. Press left rear window switch (on master switch) up then down.
- If light comes on in both directions, go to step 3). If light does not come on in both directions, check for open in Dark Green and Purple wires between master switch and left rear window switch. If wires are okay, replace master switch.
- Connect a jumper wire between left rear window switch connector Dark Green wire and Dark Blue wire (going to left rear window motor). Connect a jumper wire between left rear window switch connector Purple wire and Brown wire.
- Press left rear window switch (on master switch) up and down. If window motor operates, replace left rear window switch. If window motor does not operate, check for open in Dark Blue and Brown wires between left rear window switch and left rear window motor. If wires are okay, replace motor.
TEST 5
- Disconnect right rear window switch connector. With ignition switch in RUN position, connect a test light between right rear window switch Light Green wire connector terminal and Purple wire connector terminal. Press right rear window switch (on master switch) up then down.
- If light comes on in both directions, go to step 3). If light does not come on in both directions, check for open in Light Green and Purple wires between master switch and right rear window switch. If wires are okay, replace master switch.
- Connect a jumper wire between right rear window switch connector Light Green wire and Dark Blue wire (going to right rear window motor). Connect a jumper wire between right rear window switch connector Purple wire and Brown wire.
- Press right rear window switch (on master switch) up and down. If window motor operates, replace right rear window switch. If window motor does not operate, check for open in Dark Blue and Brown wires between right rear window switch and right rear window motor. If wires are okay, replace motor.
TEST 6
- Disconnect suspect individual switch connector. Ensure passenger window lockout switch is off. With ignition switch in RUN position, connect a test light between suspect window switch Dark Blue wire (from master switch) connector terminal and ground.
- If light comes on, replace suspect individual switch. If light does not come on, check for open in Dark Blue wire between master switch and suspect switch. If wire is okay, replace master switch.
Removal
- Raise window to full up position and secure in place. Remove door panel covering and insulator. Window may be disengaged from regulator and removed from vehicle. If motor is held to door and regulator with nuts and bolts, remove nuts and bolts as necessary.
- If motor is held to door and regulator with rivets, punch out center of regulator-to-door rivets and drill out rivets using a 1/4" drill bit. Disconnect window from regulator.
- Move regulator and motor assembly rearward to access motor-to-regulator rivets. Punch out center of motor-to-regulator rivets and drill out rivets using a 3/16" drill bit. On all models, disconnect electrical connector and remove motor from door.
Installation
To install, reverse removal procedure. On models attached with rivets, use Rivet Installer (J-34940) with 3/16" rivets for motor-to-regulator attachment and 1/4" rivets for regulator-to-door attachment.
Removal & Installation
Using a thin-blade screwdriver, probe between switch and door panel for spring clip (if equipped). Press down on clip to release switch and pry outward. Disconnect electrical connector and remove switch. To install, reverse removal procedure.
