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Home >> Eagle >> 1994 >> Talon ES, Standard >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System >> Diagnosis & Testing >> Code 51 >> Valve Relay

Valve Relay

  1. Disconnect hydraulic unit 10-pin connector. Remove and test valve relay. See HYDRAULIC UNIT RELAYS under DIAGNOSIS & TESTING. If relay is okay, go to next step. If relay is faulty, replace relay.
  2. Connect hydraulic unit connector. Ensure ignition switch is in OFF position. Disconnect ECM wiring harness connector. Turn ignition switch to ON position. Using a DVOM, measure voltage between valve relay connector terminal No. 52 (Red/Black wire) and ground. See WIRING DIAGRAM. If battery voltage exists, go to next step. If battery voltage does not exist, an open exists in hydraulic unit wiring harness. Repair or replace wiring harness.
  3. Using an ohmmeter, measure resistance between ECM connector terminals No. 2 (Blue/Yellow wire) and No. 27 (Red/Blue wire). Resistance should be 60-120 ohms. If resistance is okay, go to next step. If resistance is not okay, repair or replace faulty wiring harness between hydraulic unit and ECM.
  4. Check for continuity between ECM connector terminal No. 22 (Green/Yellow wire) and ground. If continuity does not exist, repair or replace faulty wiring harness between hydraulic unit and ECM. If continuity exists, valve relay circuit is okay. Replace faulty ECM.
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