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Test C: Single Power Window Inoperative

WARNING: This page is about a different car, the 2002 Lincoln Blackwood. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: After repair, clear DTCs and retest system.
  1. Operate power windows from each power window switch. If all windows operate properly, system is okay. If left front window does not operate, go to next step. If any other window does not operate, go to step  17.
  2. Turn ignition switch to LOCK position. Using New Generation Star (NGS) tester, observe Generic Electronic Module (GEM) PIDs D_DN_SW and OTD_SW while pressing driver's side power window switch driver's window through UP, DOWN and AUTO positions. If PID values do not agree with switch position, go to next step. If PID values agree with switch position, go to step  8.
  3. Turn ignition switch to LOCK position. Disconnect driver's side power window switch harness connector C504b. Using NGS tester, observe GEM PIDs D_DN_SW and OTD_SW. Connect fused jumper wire (10-amp), between driver's side power window switch connector C504b terminals No. 2 (Light Blue/Black wire) and No. 5 (Gray wire). PID OTD_SW should display ON. Connect fused jumper wire (10-amp), between driver's side power window switch connector C504b terminals No. 2 (Light Blue/Black wire) and No. 6 (Tan/Light Blue wire). See Fig 1. PID D_DN_SW should display DOWN. If PIDs do not display as specified, go to next step. If PIDs display as specified, replace driver's side power window switch. See POWER WINDOW SWITCH  under REMOVAL & INSTALLATION. If any PID constantly indicates DOWN or UP, go to step  6.
  4. Disconnect central junction box 34-pin harness connector C270b. Central junction box is located under left side of instrument panel. Measure resistance in Tan/Light Blue wire between driver's side power window switch connector C504b terminal No. 6 and central junction box connector C270b terminal No. 10 (component side). See Figure and Fig 1 . Resistance should be 5 ohms or less. Measure resistance between ground and driver's side power window switch harness connector C504b terminals No. 5 (Gray wire), No. 6 (Tan/Light Blue wire) and No. 7 (White/Black wire). Resistance should be more than 10 k/ohms at each wire. Measure resistance in Gray wire between driver's side power window switch harness connector C504b terminal No. 5 and central junction box harness connector C270b terminal No. 28 (component side). Resistance should be 5 ohms or less. If resistances are as specified, go to next step. If any resistance is not as specified, repair open or short to ground in appropriate wire(s) between central junction box and driver's side power window switch. See WIRING DIAGRAMS .
  5. Disconnect GEM from central junction box 18-pin harness connector C267. Measure resistance between central junction box harness connector C270b terminal No. 10 and harness connector C267 terminal No. 8 (down switch input). Measure between central junction box connector C270b terminal No. 28 (component side) and connector C267 terminal No. 9 (one-touch down switch input). See Figure. Resistance should be 5 ohms or less. Reconnect harness connector C270b. Measure resistance between ground and central junction box connector C267 terminals No. 8 and 9. Resistance should be more than 10 k/ohms. If resistances are as specified, replace GEM. See GENERIC ELECTRONIC MODULE  under REMOVAL & INSTALLATION. If any resistance is not as specified, replace central junction box. See REMOVAL & INSTALLATION in MODULE COMMUNICATIONS NETWORK - BLACKWOOD .
  6. Turn ignition switch to LOCK position. Disconnect central junction box 34-pin harness connector C270b. See Figure. Turn ignition switch to RUN position. Measure voltage between ground and driver's side power window switch harness connector C504b terminal No. 6 (Tan/Light Blue wire). See Fig 1. Measure voltage between ground and driver's side power window switch harness connector C504b terminals No. 5 (Gray wire). If no voltage exists, connect central junction box and go to next step. If any voltage exists, repair short to power in appropriate wire between driver's side power window switch and inoperative power window switch. See WIRING DIAGRAMS .
  7. Turn ignition switch to LOCK position. Disconnect GEM from central junction box 18-pin harness connector C267. Turn ignition switch to RUN position. Measure voltage between ground and central junction box harness connector C267 terminals No. 8 and 9. See Figure. If battery voltage exists at each terminal, replace GEM. See GENERIC ELECTRONIC MODULE  under REMOVAL & INSTALLATION. If battery voltage does not exist at any terminal, replace central junction box. See REMOVAL & INSTALLATION in MODULE COMMUNICATIONS NETWORK - BLACKWOOD .
  8. Remove driver's door trim panel. See DOOR TRIM PANEL  under REMOVAL & INSTALLATION. Disconnect driver's side power window motor 2-pin harness connector. Turn ignition switch to RUN position. Using NGS tester, trigger GEM active command ONE-TOUCH to ON. Measure voltage between ground and window motor harness connector Orange/White wire terminal. If battery voltage does not exist, exit GEM active command mode and go to next step. If battery voltage exists, go to step  12.
  9. Turn ignition switch to LOCK position. Remove one-touch down relay from central junction box. Central junction box is located under left side of instrument panel. Measure resistance of Orange/White wire between driver's side power window motor harness connector and one-touch down relay socket terminal No. 30. See Figure. If resistance is more than 5 ohms, go to next step. If resistance is 5 ohms or less, go to step  11.
  10. Disconnect central junction box 34-pin harness connector C270a. Measure resistance in Orange/White wire between driver's side power window motor connector and central junction box harness connector C270a terminal No. 24. See Figure. If resistance is 5 ohms or less, replace central junction box. If resistance is more than 5 ohms, repair open or high resistance in Orange/White wire between CJB and driver's side power window motor. See WIRING DIAGRAMS .
  11. Remove accessory delay relay from central junction box. Measure resistance between one-touch down relay socket terminal No. 87 and accessory delay relay socket terminal No. 87. See Figure. If resistance is 5 ohms or less, replace one-touch down relay. If resistance is more than 5 ohms, replace central junction box.
  12. Using NGS tester, trigger GEM active command ONE-TOUCH to OFF. Turn ignition switch to LOCK position. Measure resistance in Orange/White wire between ground and driver's side power window motor harness connector. If resistance is more than 5 ohms, go to next step. If resistance is 5 ohms or less, go to step  15.
  13. Remove one-touch down relay from central junction box. Central junction box is located under left side of instrument panel. Measure resistance between ground and one-touch down relay socket terminal No. 87A. See Figure. If resistance is more than 5 ohms, go to next step. If resistance is 5 ohms or less, replace one-touch down relay.
  14. Disconnect central junction box 34-pin harness connector C270b. Measure resistance between ground and central junction box connector C270b terminal No. 24 (Black wire). See Figure. If resistance is 5 ohms or less, replace central junction box. See REMOVAL & INSTALLATION in MODULE COMMUNICATIONS NETWORK - BLACKWOOD . If resistance is more than 5 ohms, repair open in Black wire between central junction box and ground. Ground point is located behind lower right kick panel. See WIRING DIAGRAMS .
  15. Turn ignition switch to RUN position. While pressing driver's side power window switch to UP position, measure voltage between ground and driver's side power window motor harness connector White/Black wire. If battery voltage exists, go to next step. If battery voltage does not exist, repair open in White/Black wire between power window motor and driver's side power window switch. See WIRING DIAGRAMS .
  16. Turn ignition switch to LOCK position. Disconnect driver's side power window switch harness connector C504b. Measure resistance in White/Black wire between ground and driver's side power window motor harness connector. If resistance is 5 ohms or less, replace driver's side power window motor. See POWER WINDOW MOTOR  under REMOVAL & INSTALLATION. If resistance is more than 5 ohms, replace driver's side power window switch. See POWER WINDOW SWITCH  under REMOVAL & INSTALLATION.
  17. Turn ignition switch to LOCK position. Disconnect inoperative power window switch harness connector. Turn ignition switch to RUN position. Place driver's side power window switch remote lock-out feature in UNLOCK position. Measure voltage between ground and inoperative power window switch harness connector terminal No. 4 (Yellow/Light Green wire). See Figure. If battery voltage exists, go to next step. If battery voltage does not exist, go to step  19.
  18. Turn ignition switch to LOCK position. Measure resistance between ground and inoperative power window switch harness connector terminals No. 2 and 7. See Figure. If each resistance is 5 ohms or less, go to step  21. If any resistance is more than 5 ohms, go to step  20.
  19. Turn ignition switch to LOCK position. Remove driver's power window switch. See POWER WINDOW SWITCH  under REMOVAL & INSTALLATION. Ensure driver's side power window switch remote lock-out feature is in UNLOCK position. Measure resistance between driver's side power window switch connector C504b terminal No. 2 (component side) and connector C504a terminal No. 3 (component side). See Fig 2. If resistance is more than 5 ohms, replace driver's side power window switch. See POWER WINDOW SWITCH  under REMOVAL & INSTALLATION. If resistance is 5 ohms or less, repair open in Yellow/Light Green wire. See WIRING DIAGRAMS .
  20. Turn ignition switch to LOCK position. Remove and disconnect driver's side power window switch connectors. See POWER WINDOW SWITCH  under REMOVAL & INSTALLATION. Measure resistance of appropriate wires between driver's side power window switch connectors and inoperative window switch harness connector. See WINDOW CONTROL CIRCUITS  table. See Fig 1, Fig 2 and Figure . If resistance is 5 ohms or less, replace driver's side power window switch. If resistance is more than 5 ohms, repair open in appropriate wire between driver's side power window switch and inoperative power window switch. See WIRING DIAGRAMS .
    WINDOW CONTROL CIRCUITS

    Inoperative Window Switch Terminal No. Driver Window Switch Terminal No.
    Right Front C604-2 C504b-4
    Right Front C604-7 C504b-3
    Left Rear C701-2 C504a-7
    Left Rear C701-7 C504a-6
    Right Rear C801-2 C504a-5
    Right Rear C801-7 C504a-4
  21. Using 2 fused (10-amp) jumper wires, connect jumper wires between appropriate wire terminals at inoperative window switch harness connector. See WINDOW SWITCH CIRCUIT IDENTIFICATION  table. If window motor does not operate correctly, go to next step. If window motor operates correctly with jumper wires but not with control switch, replace appropriate control switch. See POWER WINDOW SWITCH  under REMOVAL & INSTALLATION. If window operates from passenger control switches but not from driver control switch, replace driver control switch and test system operation. See POWER WINDOW SWITCH  under REMOVAL & INSTALLATION.
    WINDOW SWITCH CIRCUIT IDENTIFICATION

    Inoperative Window (Connector No.) Jumper Terminals No. (Wire Color) Jumper Terminals No. (Wire Color) Result
    Right Front (C604) 2 (White/Yellow) & 3 (Yellow/Red) 4 (Yellow/Light Green) & 6 (Red/Yellow) Up
    Right Rear (C801) 2 (Yellow/Black) & 3 (Brown) 4 (Yellow/Light Green) & 6 (Brown/Yellow) Up
    Left Rear (C701) 2 (Gray/Orange) & 3 (Yellow/Black) 4 (Yellow/Light Green) & 6 (Yellow/Black) Up
    Right Front (C604) 6 (Red/Yellow) & 7 (Tan/Light Blue) 3 (Yellow/Red) & 4 (Yellow/Light Green) Down
    Right Rear (C801) 6 (Brown/Yellow) & 7 (Red/Black) 3 (Brown) & 4 (Yellow/Light Green) Down
    Left Rear (C701) 6 (Yellow/Black) & 7 (Yellow/Light Blue) 3 (Yellow/Light Blue) & 4 (Yellow/Light Green) Down
  22. Turn ignition switch to LOCK position. Disconnect inoperative power window motor harness connector. Measure resistance of circuits between inoperative power window switch harness connector and window motor harness connector. See POWER WINDOW MOTOR CIRCUIT IDENTIFICATION  table. If all resistances are 5 ohms or less, replace inoperative power window motor. See POWER WINDOW MOTOR  under REMOVAL & INSTALLATION. If any resistance is more than 5 ohms, repair open or high resistance in appropriate wire(s) between power window motor and inoperative power window switch. See WIRING DIAGRAMS .
    POWER WINDOW MOTOR CIRCUIT IDENTIFICATION

    Inoperative Window Switch Connector (Terminal No.) Wire Color Window Motor Connector
    Right Front
    C604 (3) Yellow/Red C608
    C604 (6) Red/Yellow C608
    Right Rear
    C801 (3) Brown C803
    C801 (6) Brown/Yellow C803
    Left Rear
    C701 (3) Yellow/Light Blue C703
    C701 (6) Yellow/Black C703
Fig 1: Identifying Driver's Power Window Switch Harness Connector C504b
G99J02701Courtesy of FORD MOTOR CO.
Fig 2: Identifying Driver's Power Window Switch Harness Connector C504a
G00012297Courtesy of FORD MOTOR CO.
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