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Home >> Ford >> 1997 >> Taurus G, AX4N >> Repair and Diagnosis >> Suspension >> Electronic Suspension >> Testing & Diagnosis >> Test C: Height Sensor Circuit Short To Ground

Test C: Height Sensor Circuit Short To Ground

  1. Check Sensor Connections

    Disconnect and inspect height sensor connectors for corrosion, damaged pins or wiring. Repair or replace as necessary. Go to next step.

  2. Check Circuit Short To Ground

    Disconnect SARC module connectors. Disconnect suspect height sensor connector. Check resistance of circuits 423 (Purple/Light Green), 425 (Brown/Black), 427 (Pink/Black), 428 (Orange/Black), between sensor connector and ground. If resistance is less than 10,000 ohms, repair short to ground. Repeat self test. See SELF TEST  . If resistance is 10,000 ohms or more, go to next step.

  3. Check For Short To Circuit 430 (Gray)

    Disconnect suspect height sensor connector. Check resistance between circuits 423 (Purple/Light Green), 425 (Brown/Black), 427 (Pink/Black), 428 (Orange/Black), and circuit 430 (Gray). If resistance is less than 10,000 ohms, repair short. Repeat self test. See SELF TEST  . If resistance is 10,000 ohms or more, go to next step.

  4. Check Height Sensor Voltage

    Reconnect SARC module connectors. Disconnect suspect sensor. Using NGS tester, turn on sensor power using ACTIVE COMMAND MODE test, SUSPENSION DIAGNOSTIC CONTROL, HT SENSOR POWER: ON. Check voltage between circuit 423 (Purple/Light Green), 425 (Brown/Black), 427 (Pink/Black), 428 (Orange/Black), and ground.If voltage is 2.3-2.7 volts, go to next step. If voltage is not 2.3-2.7 volts, replace SARC module.

  5. Check Sensor For Internal Short

    Reconnect height sensor and SARC module. Using NGS tester, turn on sensor power using ACTIVE COMMAND MODE test, SUSPENSION DIAGNOSTIC CONTROL, HT SENSOR POWER: ON. Backprobing SARC module, check voltage between circuit 423 (Purple/Light Green), 425 (Brown/Black), 427 (Pink/Black), 428 (Orange/Black), and circuit 432 (Black/Pink). See Figure . If voltage is more than .5 volt, go to TEST B  . If voltage is .5 volts or less, replace sensor. Repeat self test. See SELF TEST  .
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