lemon-mirror:
Home >> Subaru >> 1994 >> Impreza Base >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System >> Testing >> Code 42

Code 42

  1. Ensure battery is fully charged. Ensure ignition is off. Disconnect ABS harness connector. See Figure . Remove ABS harness connector cover. Connect control unit harness connector. Turn ignition on. Using voltmeter, backprobe harness connector. Measure voltage between terminal No. 32 and ground. See Figure . If voltage is less than battery voltage, go to next step. If battery voltage is present, replace ABS control unit.
  2. Turn ignition off. Disconnect hydraulic unit motor harness connector (2 terminal). Turn ignition on. Measure voltage between harness connector terminal No. 2 (White/Red wire) and ground. If battery voltage is present, go to next step. If battery voltage is not present, inspect and repair circuit as needed. See WIRING DIAGRAM at the end of this article.
  3. Turn ignition off. Disconnect ABS harness connector. Using ohmmeter, check continuity between ABS harness connector terminal No. 32 and hydraulic unit motor harness connector terminal No. 1 (White/Green wire). If continuity exists, go to next step. If continuity does not exist, inspect and repair circuit as needed. See WIRING DIAGRAM at the end of this article.
  4. Remove hydraulic unit valve relay. Hydraulic unit valve relay (5 terminal) is located on hydraulic unit. Check continuity of relay. See Figure . Check resistance between relay terminals 85 and 86. Resistance should be 93-113 ohms. Replace relay if measurements and/or continuity is not as specified. If relay is okay, replace hydraulic unit. See REMOVAL & INSTALLATION.
· About lemon-mirror