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Right Front Wheel Speed Sensor

NOTE: For connector terminal identification, see CONNECTOR IDENTIFICATION. For wiring diagram, see wiring diagram.
  1. Using scan tool, read trouble codes. If scan tool displays RF WSS CONTINUITY fault, go to TEST 14A. If scan tool does not display RF WSS CONTINUITY fault, go to next step.
  2. Raise vehicle on a hoist. Inspect right front tire. If tire wear is excessive, replace tire. Perform TEST VER-1A. If tire wear is not excessive, go to next step.
  3. Rotate right front tire by hand. If tire is difficult to rotate, repair dragging brakes. Perform TEST VER-1A. If tire rotates with minimal resistance, go to next step.
  4. Using scan tool, read RF WSS signal while rotating right front tire. If scan tool shows greater than zero MPH, go to TEST 11B. If scan tool does not show greater than zero MPH, go to next step.
  5. Inspect right front tone wheel for damage (chipping or cracking). If tone wheel is damaged, replace tone wheel. Perform TEST VER-1A. If tone wheel is okay, go to next step.
  6. Inspect right front Wheel Speed Sensor (WSS) for damage and proper connection. If right front WSS is damaged or loose, replace or repair right front WSS as necessary. Perform TEST VER-1A. If right front WSS is not damaged or loose, go to next step.
  7. Using a feeler gauge, check air gap between right front WSS sensor and tone wheel. If clearance exceeds .07" (1.7 mm), repair or replace steering knuckle. Perform TEST VER-1A. If clearance does not exceed .07" (1.7 mm), go to next step.
  8. Disconnect right front WSS connector. Turn ignition on. Using an external voltmeter, check voltage across sensor terminals. If voltage is more than 4 volts, replace right front WSS. Perform TEST VER-1A. If voltage is less than 4 volts, go to next step.
  9. Turn ignition off. Disconnect Controller Anti-Lock Brake (CAB) 60-pin connector. Inspect, clean and repair connector as necessary. Perform TEST VER-1A. If connector is okay, use an external ohmmeter to check resistance between CAB connector terminals No. 6 (White/Dark Blue wire) and No. 7 (White wire). If resistance is more than 5 ohms, go to TEST 20A. If resistance is less than 5 ohms, repair White/Dark Blue and White wires for a short to each other. Perform TEST VER-1A.
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