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Home >> Ford >> 1991 >> Bronco 4.9 Y, Standard, M5OD-R2 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Engine Sensors & Switches (ECA Inputs) >> Power Steering Pressure Switch (PSPS)

Power Steering Pressure Switch (PSPS)

  1. Disconnect PSPS connector at steering gearbox. Set DVOM to 200-ohm scale and connect test leads to switch. With steering wheel centered, resistance should be less than 10 ohms. Start engine and turn steering wheel one-half turn and then return it to centered position.
  2. Resistance should change from less than 10 ohms to infinity and return to less than 10 ohms when steering wheel is returned to centered position. Faulty PSPS or circuit should set a service code. See Quick Test procedure in TESTS W/CODES EEC-IV article in the ENGINE PERFORMANCE Section. If no service code has been set, see CIRCUIT TEST FF in TESTS W/CODES EEC-IV article for additional switch testing and specifications.
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