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Home >> Ford >> 1995 >> Crown Victoria Base >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Module Communications Network >> System Tests >> Drivers Seat Module >> No Communication With Drivers Seat Module
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No Communication With Drivers Seat Module

  1. Check Power Supply To Driver Seat Module

    Disconnect 22-pin driver seat module connector. Using a voltmeter, measure for voltage at driver seat module connector pin No. 12 circuit 296 (White/Purple) on Town Car, or Circuit 785 (Black/Light Green) on Crown Victoria and Grand Marquis. See Fig 1 and Fig 2 . Is positive battery voltage present? If yes, go to step  4 . If no, go to next step.
    2. NOTE: The fuse panel is located in the instrument panel to the left of the steering column. To expose fuse panel, remove lower steering column finish panel.

  2. Check circuit 296 (Town Car) Or Circuit 785 (Crown Victoria, Grand Marquis) For Short To Ground
    Remove Fuse 8 (15A) from fuse junction panel. Using an ohmmeter connected to ground, measure resistance at driver seat module connector pin No. 12, circuit 296 (White/Purple) on Town Car, or circuit 785 (Black/Light Green) on Crown Victoria and Grand Marquis. Is resistance less than 10,000 ohms? If yes, service circuit 296 (White/Purple) on Town Car or circuit 785 (Black/Light Green) on Crown Victoria and Grand Marquis for short to ground. Replace Fuse 8 (15A). Restore vehicle. Retest system. If no, go to next step.

  3. Check Fuse No. 8 (15A)

    Using an ohmmeter, measure resistance between terminals of Fuse 8 (15A). Is resistance 5 ohms or less? If yes, service circuit 296 (White/Purple) on Town Car, or circuit 785 (Black/Light Green) on Crown Victoria and Grand Marquis for open. Restore vehicle. Retest system. If no, replace Fuse 8 (15A). Restore vehicle. Retest system.

  4. Check Circuit 676 (Town Car) Or Circuit 57 (Crown Victoria, Grand Marquis) For Open

    Using an ohmmeter connected to ground, measure resistance at driver seat module connector pin No. 11, circuit 676 (Pink/Orange) on Town Car, or circuit 57 (Black) on Crown Victoria and Grand Marquis. Is resistance less than 5 ohms? If yes, there is a problem with network communication. If no, service circuit 676 (Pink/Orange) on Town Car, or circuit 57 (Black) on Crown Victoria or Grand Marquis for open. Restore vehicle. Retest system.
    Fig 1: Driver Seat Module 22-Pin Connector Identification (Crown Victoria & Grand Marquis)
    G00106286Courtesy of FORD MOTOR CO.
    Fig 2: Driver Seat Module 22-Pin Connector Identification (Town Car)
    G00161255Courtesy of FORD MOTOR CO.
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