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Ignition Switch In START Position, Warning Light Inoperative

  1. Remove ABS power relay fuse (No. 3) from junction block. Disconnect hydraulic unit 10-pin connector. Turn ignition on. Using a DVOM, measure voltage between terminal No. 8 (Green/Red wire) and ground. See Figure. If battery voltage is present, go to next step. If battery voltage is not present, repair circuit between ABS warning light and hydraulic unit.
  2. Using an ohmmeter, check for continuity between terminal No. 9 and ground. If continuity exists, go to next step. If no continuity exists, repair hydraulic unit circuit.
  3. Check for continuity between hydraulic unit connector terminals No. 8 and 9. If continuity exists, go to next step. If no continuity exists, replace valve relay.
  4. Remove valve relay from hydraulic unit. Check for continuity between relay terminals No. 87a and 30. See Figure. If no continuity exists, replace valve relay. If continuity exists, hydraulic unit wiring harness is faulty. Replace hydraulic unit.
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