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Test 4: Inlet Solenoid Valve Problem

  1. Disconnect ABSCM/HU connector. Start engine and run at idle. Measure voltage between ground and ABSCM/HU connector terminal No. 1. See Figure. If voltage is 10-15 volts, go to next step. If voltage is not 10-15 volts, repair wiring harness between battery, ignition switch and ABSCM/HU connectors.
  2. Turn ignition off. Measure resistance between ground and ABSCM/HU connector terminal No. 23. See Figure. If resistance is less than .5 ohm, go to next step. If resistance is more than .5 ohm, repair wiring harness between ground and ABSCM/HU.
  3. Check contact at ABSCM/HU connector, generator and battery. If connector contacts are poor, repair contacts. If contacts are okay, go to next step.
  4. Reconnect all connectors. Erase memory. Recheck for trouble codes. If same trouble code returns, replace ABSCM/HU. If other trouble codes exist, go to proper test procedure. If no trouble codes exist, problem was a temporary poor contact. Recheck harness and connectors.
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