DESCRIPTION & OPERATION
Power windows are operated by reversible type motors mounted with each individual window regulator. Each window has an individual switch for separate control. A master control switch is located on left front door or center console, and all windows may be controlled from this switch.
A lock-out switch is incorporated in master switch. When actuated, it prevents window operation from individual switches. A relay prevents window operation unless ignition switch is in ON or ACC position.
Preliminary Checks
Confirm concern, operate all switches. Ensure battery is fully charged. Ensure windows are properly aligned. Check the following for possible cause of malfunction
- Faulty fuses or circuit breaker.
- Open or shorted supply circuit.
- Loose or corroded connectors.
- Poor ground connections.
- Faulty Master Switch. See WINDOW SWITCHES under TESTING.
Confirm concern. Ensure battery is fully charged. Ensure window in question is properly aligned. Check the following for possible cause of malfunction
- Damaged track or regulator mechanism.
- Malfunctioning window motor. See WINDOW MOTOR under TESTING.
- Open or shorted circuit.
Confirm concern. Ensure battery is fully charged. Check the following for possible cause of malfunction
- Malfunctioning switch. See WINDOW SWITCHES under TESTING.
- Open or shorted circuit. Check circuits between master switch and single switch.
WINDOW MOTOR
With motor and drive assembly removed from vehicle, connect a fully charged battery to motor with an ammeter connected in series. Current draw from this no-load test should not exceed 5 amps at 12.8 volts, and should not fluctuate. Reverse battery connections. Motor should reverse rotation and current draw should remain the same. Motor must be replaced if current draw exceeds specifications.
Master Switch
- With switch removed from vehicle, test with a self-powered test light or ohmmeter. Connect one test lead on terminal No. 3. (Scheme 1) With all switches in NEUTRAL position, continuity should be present between terminal No. 3 and terminals No. 4 through 11.
- Push all 4 window switches forward and hold in that position. Terminals No. 5, 7, 9 and 11 should lose continuity to terminal No. 3. Push all 4 window switches rearward and hold in that position. Terminals No. 4, 6, 8 and 10 should lose continuity to terminal No. 3.
- Remove test lead from terminal No. 3 and connect it to terminal No. 2. With all switches in NEUTRAL position, only terminal No. 1 should have continuity to terminal No. 2.
- Push all 4 switches forward and hold in that position. Terminals No. 5, 7, 9 and 11 should have continuity to terminal No. 2. Push all 4 switches rearward and hold in that position. Terminals No. 4, 6, 8 and 10 should have continuity to terminal No. 2.
- With lock-out switch in lock position. Terminal No. 2 should not have continuity with any other terminal. If any switch does not test as indicated, replace complete switch assembly.
Scheme 1
Single Switch
- With switch removed from vehicle, test with a self-powered test light or ohmmeter. With switch in NEUTRAL position, continuity should exist between terminals No. 1 and 3, 2 and 5, and 4 and 6. (Scheme 2)
- With switch in DOWN position. Continuity should exist between terminals No. 2, 4 and 5, and 1 and 3. Terminal No. 6 should not have continuity with any other terminal.
- With switch in UP position. Continuity should exist between terminals No. 2, 3 and 5, and 4 and 6. Terminal No. 1 should not have continuity with any other terminal. If switch does not test as described, replace switch.
Scheme 2
Removal & Installation
- Raise window to full up position (if possible) and support. Disconnect battery ground cable. Remove inner door trim panel and protective cover. CAUTION: When drilling out rivets, do not enlarge holes in door.
- Using a punch, drive out pin of each rivet retaining window motor bracket to door frame. Using a 1/4" drill, drill out remainder of each rivet. Position window motor bracket to gain access to screws attaching motor to bracket.
- Using a No. 2 Scrulox bit, remove motor-to-bracket screws. Remove window motor from door. To install, reverse removal procedure. Tighten motor-to-regulator bolts to 50-84 INCH lbs (5.6-9.5 N.m).
Remove screw from front of bezel and lift bezel and switch away from arm rest. Remove bezel and nut from mirror remote control. Remove 2 nuts from bezel studs and separate switch from bezel. Pull switch from connector. To install, reverse removal procedure.
