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Test B: Single Power Window Inoperative (ZX2)

  1. Turn ignition switch to ON position. Attempt to operate right front door window. If right front door window operates, go to next step. If right front door window does not operate, go to step  10.
  2. Turn ignition switch to LOCK position. Check position of left front door window. If left front door window is not closed, go to next step. If left front door window is closed, go to step  4.
  3. Disconnect left front door master window/door lock switch Black 15-pin harness connector C510. Connect a jumper wire between ground and left front door master window/door lock switch Black 15-pin harness connector C510 terminal No. 6 (Green wire). See Figure. Momentarily touch another jumper wire between positive battery terminal and left front door master window/door lock switch Black 15-pin harness connector C510 terminal No. 13 (Red/Black wire). If left front door window does not go up, go to step  5. If left front door window goes up, go to step  8.
  4. Disconnect left front door master window/door lock switch Black 15-pin harness connector C510. Connect a jumper wire between ground and left front door master window/door lock switch Black 15-pin harness connector C510 terminal No. 13 (Red/Black wire). See Figure. Momentarily touch another jumper wire between positive battery terminal and left front door master window/door lock switch Black 15-pin harness connector C510 terminal No. 6 (Green wire). If left front door window does not go down, go to next step. If left front door window goes down, go to step  8.
  5. Access back of relay box. Relay box is located behind left side of instrument panel. See Figure. Using an ohmmeter, measure resistance of Green wire between left front door master window/door lock switch Black 15-pin harness connector C510 terminal No. 6 and backprobe relay box one-touch down control unit 5-pin harness connector C205 terminal No. 2. See Figure and Fig 1 . If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open in Green wire. See WIRING DIAGRAMS . Retest system operation.
    Fig 1: Identifying One-Touch Down Control Unit 5-Pin Harness Connector C205 Terminals
    G00032195Courtesy of FORD MOTOR CO.
  6. Measure resistance of Red/Green wire between 2-pin left front door power window motor harness connector C504 and backprobe one-touch down control unit harness connector C205 terminal No. 1. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open in Red/Green wire. See WIRING DIAGRAMS . Retest system operation.
  7. Measure resistance of Red/Black wire between left front door power window motor 2-pin harness connector C504 and left front door master window/door lock switch Black 15-pin harness connector C510 terminal No. 13. If resistance is less than 5 ohms, replace left front door power window motor. Retest system operation. If resistance is 5 ohms or more, repair open in Red/Black wire. See WIRING DIAGRAMS . Retest system operation.
  8. Turn ignition switch to ON position. Using a voltmeter, measure voltage between ground and left front door master window/door lock switch Black 15-pin harness connector C510 terminal No. 10 (Black/White wire). See Figure. If voltage is more than 10 volts, go to next step. If voltage is 10 volts or less, repair open in Black/White wire. See WIRING DIAGRAMS . Retest system operation.
  9. Turn ignition switch to LOCK position. Using an ohmmeter, measure resistance between ground and left front door master window/door lock switch Black 15-pin harness connector C510 terminals No. 7 and 12 (Black wires) individually. If resistance is less than 5 ohms in both measurements, replace left front door master window/door lock switch. Retest system operation. If either resistance reading is 5 ohms or more, repair open in appropriate Black wire(s). See WIRING DIAGRAMS . Retest system operation.
  10. Turn ignition switch to LOCK position. Disconnect left front door master window/door lock switch Black 15-pin harness connector C510. Disconnect Black right front door window switch 10-pin harness connector C609. Turn ignition switch to ON position. Using a voltmeter, measure voltage between ground and left front door master window/door lock switch Black 15-pin harness connector C510 terminal No. 11 (Black/White wire). See Figure. Measure voltage between ground and right front door window switch 10-pin harness connector C609 terminal No. 8 (Black/White wire). See Fig 2. If both voltage readings are more than 10 volts, go to next step. If either voltage reading is 10 volts or less, repair open in appropriate Black/White wire(s). See WIRING DIAGRAMS . Retest system operation.
    Fig 2: Identifying Right Front Door Window Switch 10-Pin Harness Connector C609 Terminals
    G96D01336Courtesy of FORD MOTOR CO.
  11. Turn ignition switch to LOCK position. Using an ohmmeter, measure resistance between ground and left front door master window/door lock switch Black 15-pin harness connector C510 terminals No. 7, 9, 12, and 14 (Black wires) individually. If all resistance readings are less than 5 ohms, reconnect both window switch harness connectors and go to next step. If any resistance is 5 ohms or more, repair open in appropriate Black wire(s). See WIRING DIAGRAMS . Retest system operation.
  12. Turn ignition switch to ON position. Operate right front door window from left front door master window/door lock switch controls. Operate right front door window switch. If left front door master window/door lock switch operates in one direction and right front door window switch does not operate in only one direction, go to next step. If left front door master window/door lock switch is inoperative in both directions and right front door window switch operates in only one direction, go to step  18.
  13. Operate right front door window from left front door master window/door lock switch controls. Operate right front door window switch. If left front door master window/door lock switch operates properly and right front door window switch does not operate properly, go to next step. If left front door master window/door lock switch is inoperative in both directions and right front door window switch operates properly, replace left front door master window/door lock switch. See POWER WINDOW SWITCH  under REMOVAL & INSTALLATION. Retest system operation.
  14. Operate right front door window from left front door master window/door lock switch controls. Operate right front door window switch. If left front door master window/door lock switch does not operate properly and right front door window switch is not inoperative, go to next step. If left front door master window/door lock switch operates properly and right front door window switch is inoperative, replace right front door window switch. See POWER WINDOW SWITCH  under REMOVAL & INSTALLATION. Retest system operation.
  15. Perform power window motor test. See POWER WINDOW MOTOR  under COMPONENT TESTS. If right front power window motor is okay, go to next step. If right front power window motor is faulty, replace right front power window motor. See POWER WINDOW MOTOR & REGULATOR  under REMOVAL & INSTALLATION. Retest system operation.
  16. Turn ignition switch to LOCK position. Disconnect right front door power window motor 2-pin harness connector C607. Disconnect right front door window switch 10-pin harness connector C609. Using an ohmmeter, measure resistance in Red wire between right door power window motor 2-pin harness connector C607 and right front door window switch 10-pin harness connector C609 terminal No. 10. See Fig 2. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open in Red wire. See WIRING DIAGRAMS . Retest system operation.
  17. Using an ohmmeter, measure resistance in White wire between right front door power window motor 2-pin harness connector C607 and right front door window switch 10-pin harness connector C609 terminal No. 6. If resistance is less than 5 ohms, replace right front door window switch. See POWER WINDOW SWITCH  under REMOVAL & INSTALLATION. Retest system operation. If resistance is 5 ohms or more, repair open in White wire. See WIRING DIAGRAMS . Retest system operation.
  18. Turn ignition switch to LOCK position. Disconnect left front door master window/door lock switch Black 15-pin harness connector C510. Disconnect right front door window switch 10-pin harness connector C609. Using an ohmmeter, measure resistance in Green/Black wire between left front door master window/door lock switch Black 15-pin harness connector C510 terminal No. 15 and right front door window switch 10-pin harness connector C609 terminal No. 7. See Figure and Fig 2 . If resistance is 5 ohms or more, repair open in Green/Black wire. See WIRING DIAGRAMS . Retest system operation. If resistance is less than 5 ohms, repair short to ground in Light Green/Red wire between left front door master window/door lock switch Black 15-pin harness connector C510 and right front door window switch 10-pin harness connector C609. See WIRING DIAGRAMS . Retest system operation.
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