Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2000CAVALIER BASE, 2D COUPE, AUTOMATIC, 4T40E/MN4REPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTWINDOW MOTORS & REGULATORSPOWER WINDOW SYSTEMSYMPTOM TESTSTEST 4: LEFT REAR WINDOW INOPERATIVE
2000 Chevrolet Cavalier Base, 2D Coupe, Automatic, 4T40E/MN4
Test 4: Left Rear Window Inoperative
2000 Chevrolet Cavalier Base, 2D Coupe, Automatic, 4T40E/MN4SECTION Test 4: Left Rear Window Inoperative
- Turn ignition switch to RUN position. Press lock-out switch on master window switch assembly to OFF position. Using DVOM connected to ground, backprobe at master window switch assembly connector C2 terminal "H" (Purple wire). See Figure . Press left rear window switch on master window switch assembly to DOWN position. If battery voltage is present, go to next step. If battery voltage is not present, go to step 4 .
- Using DVOM connected to ground, backprobe at master window switch assembly connector C2 terminal "C" (Dark Green wire). See Figure . Press left rear window switch on master window switch assembly to UP position. If battery voltage is present, go to next step. If battery voltage is not present, go to step 4 .
- Disconnect left rear window switch. Using DVOM connected to ground, measure voltage at left rear window switch connector Purple wire terminal. Press left rear window switch on master window switch assembly to DOWN position. If battery voltage is present, go to step 5 . If battery voltage is not present, go to step 6 .
- Replace master window switch assembly. See WINDOW & DOOR LOCK SWITCHES under REMOVAL & INSTALLATION. Recheck system operation.
- Using DVOM connected to ground, measure voltage at left rear window switch harness connector Dark Green wire terminal. Press left rear window switch on master window switch assembly to UP position. If battery voltage is present, go to step 7 . If battery voltage is not present, go to step 8 .
- Repair open in Purple wire between master window switch assembly and left rear window switch. See WIRING DIAGRAMS . Recheck system operation.
- Connect a fused jumper between left rear window harness connector Purple wire terminal and Brown wire terminal and between Dark Blue wire terminal and Dark Green wire terminal. Press left rear window switch on master window switch assembly to UP and DOWN positions. If left rear window operates, go to step 9 . If left rear window does not operate, go to step 10 .
- Repair open in Dark Green wire between master window switch assembly and left rear window switch. See WIRING DIAGRAMS . Recheck system operation.
- Replace left rear window switch. See WINDOW & DOOR LOCK SWITCHES under REMOVAL & INSTALLATION. Recheck system operation.
- Connect left rear window switch. Disconnect left rear window motor. Using DVOM connected to ground, measure voltage at left rear window motor harness connector terminal "A" (Brown wire). Press left rear window switch on master window switch assembly to DOWN position. If battery voltage is present, go to next step. If battery voltage is not present, go to step 12 .
- Using DVOM connected to ground, measure voltage at left rear window motor harness connector terminal "B" (Dark Blue wire). Press left rear window switch on master window switch assembly to UP position. If battery voltage is present, go to step 13 . If battery voltage is not present, go to step 14 .
- Repair open in Brown wire between left rear window switch and left rear window motor connector terminal "A". See WIRING DIAGRAMS . Recheck system operation.
- Replace left rear window motor. See WINDOW MOTOR under REMOVAL & INSTALLATION. Recheck system operation.
- Repair open in Dark Blue wire between left rear window switch and left rear window motor connector terminal "B". See WIRING DIAGRAMS . Recheck system operation.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.