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Electrical Load Switch: DOHC

  1. Disconnect ECM connector. Using DVOM, measure input voltage between terminal No. 24 (Red/Green wire) and vehicle ground. Turn headlights on. Measure voltage. Turn headlights off.
  2. Turn defogger on. Measure voltage. Turn defogger off. Depress brake pedal. Measure voltage. Release brake pedal. If any measurement is less than battery voltage, check and repair malfunctioning circuit.
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