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Home >> Ford >> 1997 >> Expedition 4.6 W, RWD >> Repair and Diagnosis (Single Page) >> Brakes >> Traction Control >> Anti-Lock Brake System - 4-Wheel >> Intermittent Failures >> Sensor Failure Test >> Check For Open Circuit

Check For Open Circuit

  1. Connect 60-pin breakout box to EHCU with ABS adapter cable. Disconnect suspect sensor and connect jumper wire between sensor harness connector terminals. Enable maximum resistance hold feature.
  2. For left front wheel speed sensor, monitor resistance between breakout box test terminals No. 11 (Tan/Orange wire) and No. 23 (Tan/Black wire). Drive vehicle over rough roads at various speeds. If there is an open between either circuit, repair circuit for an open.
  3. For right front wheel speed sensor, monitor resistance between breakout box test terminals No. 10 (Yellow/Red wire) and No. 22 (Yellow/Black wire). Drive vehicle over rough roads at various speeds. If there is an open between either circuit, repair circuit for open.
  4. For rear wheel speed sensor, monitor resistance between breakout box test terminals No. 9 (Red/Pink wire) and No. 21 (Light Green/Black wire). Drive vehicle over rough roads at various speeds. If there is an open between either circuit, repair circuit for open.
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