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Right Rear Sensor Circuit Failure

  1. Using DRB-II, read and record all wheel speed sensor faults. If RIGHT REAR SENSOR CIRCUIT FAILURE message is displayed, go to next step. If message is not displayed, perform TEST 21A.
  2. Inspect right rear 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. Using DRB-II in voltmeter mode, probe Yellow wire (Yellow/Dark Blue wire on Wrangler) at CAB connector terminal No. 27. If no voltage is present, go to next step. If any voltage is present, perform TEST 20B.
  4. Using DRB-II in ohmmeter mode, probe Yellow wire (Yellow/Dark Blue wire on Wrangler) at CAB connector terminal No. 27. If resistance is more than 5 ohms, go to next step. If resistance is less than 5 ohms, perform TEST 20C.
  5. Using an external ohmmeter, measure resistance of right rear wheel speed sensor between Yellow wire and Yellow/Dark Blue wire at CAB connector terminals No. 27 and 45. 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 rear wheel speed sensor. Using an external ohmmeter, measure resistance of right rear wheel speed sensor. 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. Connect a jumper wire between ground and Yellow/Dark Blue wire (Yellow wire on Wrangler) at CAB connector terminal No. 45. With DRB-II in ohmmeter mode, measure resistance of Yellow wire (Yellow/Dark Blue wire on Wrangler) at right rear wheel speed sensor harness connector. If resistance is less than 5 ohms, perform TEST 20E. If resistance is more than 5 ohms, perform TEST 20D.
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