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Home >> Jeep >> 1993 >> Cherokee Base, 4D Utility, 2.5 P, 4WD >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System >> Test 9A >> Rear Inlet Valve

Rear Inlet Valve

  1. Disconnect and inspect hydraulic unit 10-pin connector. Repair connector as necessary. Turn ignition on. With DRB-II in voltmeter mode, probe terminal No. 4 (White/Black wire on Cherokee and Wrangler or White/Red wire on Grand Cherokee and Grand Wagoneer) of hydraulic unit connector. If voltage is present, repair short to voltage in White/Black or White/Red wire. Perform VERIFICATION TEST VER-1A.
  2. If voltage is not present, turn ignition off. Disconnect and inspect CAB 55-pin connector. Repair connector as necessary. With DRB-II in ohmmeter mode, probe terminal No. 4 of hydraulic unit connector. If resistance is less than 5 ohms, repair short to ground in White/Black or White/Red wire. Perform VERIFICATION TEST VER-1A.
  3. If resistance is less than 5 ohms, check resistance of between terminal No. 54 of CAB connector and No. 4 of hydraulic unit connector using an external ohmmeter. If resistance is more than 5 ohms, repair open in White/Black or White/Red wire. Perform VERIFICATION TEST VER-1A.
  4. Using an external ohmmeter, check resistance between terminals No. 4 and 5 of hydraulic control unit pigtail connector. If resistance is not 5-8 ohms, replace hydraulic control unit. Perform VERIFICATION TEST VER-1A. If resistance is 5-8 ohms, replace CAB. Perform VERIFICATION TEST VER-1A.
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