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Home >> Ford >> 2006 >> Focus ZX4 SES, Automatic >> Repair and Diagnosis >> Steering >> Manual Steering >> Steering System-General Information >> Diagnosis And Testing >> Steering System >> Component Tests >> Power Steering Pressure Test
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Power Steering Pressure Test

  1. Place a dial thermometer in the power steering fluid reservoir.
  2. Install the scan tool and monitor the power steering pressure sensor PID.
    3. CAUTION: Do not hold the steering wheel against the stops for more than 3 to 5 seconds at a time. Damage to the power steering pump can occur.
  3. Start the engine. With the engine at idle, raise the power steering fluid temperature to 74-80°C (165-176°F) by rotating the steering wheel fully to the left and right several times.
  4. With the steering wheel in the straight-ahead position and the engine speed at idle, record the pressure reading.
    • If the pressure reading is greater than 1207 kPa (175 psi), check the power steering lines/hoses for kinks and restrictions and repair as necessary.
    5. CAUTION: Do not hold the steering wheel against the stops for more than 3 to 5 seconds at a time. Damage to the power steering pump can occur.
  5. Turn (or have an assistant turn) the steering wheel to the left and right stops. Record pressure readings at the stops.
    • The pressure reading at both stops should be nearly the same as the maximum pump relief pressure (1,200-1,380 psi).
    • If the pressure reaches the maximum pump relief pressure (1,200-1,380 psi) AT ONE STOP BUT NOT THE OTHER  , install a new steering gear. Refer to STEERING GEAR for the procedure.
    • If the pressure does not reach the maximum pump relief pressure (1,200-1,380 psi) AT ALL  , install a new power steering pump. Refer to POWER STEERING PUMP -- EARLY BUILD or POWER STEERING PUMP -- LATE BUILD for the procedure.
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