1998 Ford Contour SVTFACTORY OEM SERVICE PROCEDURE

Test F: Left Rear Window Does Not Operate

  1. Check Driver Door Master Window Switch  - Turn ignition off. Remove and disconnect driver door master window switch. Turn ignition switch to RUN position. Connect a jumper wire between driver door master window switch 16-pin connector C74a terminal No. 16 (Yellow/Blue wire) and driver door master window switch 4-pin connector C74b terminal No. 4 (Violet/Blue wire). See Figure and Figure . Connect another jumper wire between driver door master window switch 16-pin connector C74a terminal No. 15 (White/Blue wire) and driver door master window switch 4-pin connector C74b terminal No. 3 (Black wire). If left rear window does not go down, go to next step. If left rear window goes down, replace driver door master window switch and retest system operation.
  2. Check White/Blue Wire For Open Or Short To Ground  - Turn ignition off. Disconnect left rear door window switch connector. Using an ohmmeter, check resistance between driver door master window switch connector C74a terminal No. 15 (White/Blue wire) and left rear door window switch connector C1854 terminal No. 6 (White/Blue wire). See Figure and Figure . Check resistance between ground and driver door master window switch connector C74a terminal No. 15 (White/Blue wire). If resistance is less than 5 ohms between connectors and more than 10 k/ohms between connector and ground, go to next step. If resistance is 5 ohms or more between connectors and 10 k/ohms or less between connector and ground, repair White/Blue wire and retest system operation.
  3. Check Yellow/Blue Wire For Open Or Short To Ground  - Using an ohmmeter, check resistance between driver door master window switch connector C74a terminal No. 16 (Yellow/Blue wire) and left rear door window switch connector C1854 terminal No. 3 (Yellow/Blue wire). See Figure and Figure . Check resistance between ground and driver door master window switch connector C74a terminal No. 16 (Yellow/Blue wire). If resistance is less than 5 ohms between connectors and more than 10 k/ohms between connector and ground, go to next step. If resistance is 5 ohms or more between connectors and 10 k/ohms or less between connector and ground, repair Yellow/Blue wire and retest system operation.
  4. Check Violet Wire For Voltage  - Turn ignition off. Reconnect driver door master window switch connectors. Turn ignition switch to RUN position. Ensure driver door master window switch lock-out is off. Using a voltmeter, check voltage between ground and left rear door window switch connector C1854 terminal No. 2 (Violet wire). See Figure . If reading is more than 10 volts, go to next step. If reading is 10 volts or less, repair Violet wire and retest system operation.
  5. Check Left Rear Door Window Switch  - Connect a jumper wire between left rear door window switch connector C1854 terminals No. 1 (White/Red wire) and No. 6 (White/Blue wire). See Figure . Connect another jumper wire between left rear door window switch connector C1854 terminals No. 7 (Yellow/Red wire) and No. 2 (Violet wire). If left rear window does not go down, go to next step. If left rear window goes down, replace left rear door window switch and retest system operation.
  6. Check White/Red Wire For Open Or Short To Ground  - Turn ignition off. Disconnect left rear door window motor connector. Using an ohmmeter, check resistance between left rear door window switch connector C1854 terminal No. 1 (White/Red wire) and left rear door window motor connector terminal No. 2 (White/Red wire). See Figure . Check resistance between ground and left rear door window switch connector C1854 terminal No. 2 (White/Red wire). If resistance is less than 5 ohms between connectors and more than 10 k/ohms between connector and ground, go to next step. If resistance is 5 ohms or more between connectors and 10 k/ohms or less between connector and ground, repair White/Red wire and retest system operation.
  7. Check Yellow/Red Wire For Open Or Short To Ground  - Using an ohmmeter, check resistance between left rear door window switch connector C1854 terminal No. 7 (Yellow/Red wire) and left rear door window motor connector terminal No. 1 (Yellow/Red wire). See Figure . Check resistance between ground and right rear door window switch connector C1854 terminal No. 7 (Yellow/Red wire). If resistance is less than 5 ohms between connectors and more than 10 k/ohms between connector and ground, replace left rear window motor and retest system operation. If resistance is 5 ohms or more between connectors and 10 k/ohms or less between connector and ground, repair Yellow/Red wire and retest 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.

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