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Home >> Jeep >> 1993 >> Cherokee Country, 4D Utility, Standard >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System >> Test 18A >> Right Front Sensor Circuit Failure

Right Front Sensor Circuit Failure

  1. Using DRB-II, read and record all wheel speed sensor faults. If RIGHT FRONT SENSOR CIRCUIT FAILURE message is displayed, go to next step. If message is not displayed, perform TEST 19A.
  2. Inspect right front wheel speed sensor for damage. If sensor is okay, go to next step. If sensor is damaged, repair or replace as necessary. Perform VERIFICATION TEST VER-1A.
  3. Turn ignition off. Disconnect and inspect CAB 55-pin connector. Repair connector as necessary. Turn ignition on. With DRB-II in voltmeter mode, probe White wire at CAB connector terminal No. 47. If no voltage is present, go to next step. If any voltage is present, repair White wire for a short to battery power. Perform VERIFICATION TEST VER-1A.
  4. Turn ignition off. With DRB-II in ohmmeter mode, probe White wire at CAB connector terminal No. 47. If resistance is more than 5 ohms, go to next step. If resistance is less than 5 ohms, repair White wire for a short to ground. Perform VERIFICATION TEST VER-1A.
  5. Using an external ohmmeter, measure resistance of right front wheel speed sensor between White/Dark Blue wire and White wire at CAB connector terminals No. 29 and 47. If resistance is 900-1300 ohms, replace CAB. Perform VERIFICATION TEST VER-1A. If resistance is not 900-1300 ohms, go to next step.
  6. Disconnect right front wheel speed sensor harness connector. Connector is located on right rear corner of engine compartment. Using an external ohmmeter, measure resistance of right front wheel speed sensor at harness connector terminals. If resistance is 900-1300 ohms, go to next step. If resistance is not 900-1300 ohms, replace sensor. Perform VERIFICATION TEST VER-1A.
  7. Using an external ohmmeter, measure resistance of White wire between CAB connector terminal No. 47 and right front wheel speed sensor harness connector. If resistance is less than 5 ohms, repair open White/Dark Blue wire. Perform VERIFICATION TEST VER-1A. If resistance is more than 5 ohms, repair open White wire. Perform VERIFICATION TEST VER-1A.
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