Power Steering System Pressure Test

POWER STEERING SYSTEM PRESSURE TEST

- Tools Required
- KM-354-B Pressure Test Gauge Kit

Check the fluid pressure as follows to determine whether the trouble is in the pump or the gear unit.

Test Procedure
1. Check the power steering fluid level and the power steering pump belt tension.
2. Disconnect the high pressure line at the pump. Use a small container to catch any fluid.
3. Connect the hose of the pressure test gauge kit KM-354-B to the power steering pressure hose from the power steering pump.
4. Place the gear selector lever in PARK (automatic transaxle-equipped vehicles) or NEUTRAL (manual transaxle-equipped vehicles). Set the parking brake.
5. Open the gauge valve fully.
6. Start the engine and let it idle.
7. Turn the steering wheel from lock to lock several times to warm the fluid to operating temperature.
8. Increase the engine speed to 1,500 rpm.

NOTICE: The power steering pump could be damaged if the valve is fully closed for more than 5 seconds.

9. Close the gauge valve fully, and read the pressure. The pump pressure with the valve closed should be between 8,330 kPa to 8,820 kPa (1,208 psi to 1,279 psi). With Electronic Variable Orifice (EVO), the pressure should be between 8,500 kPa to 8,960 kPa (1,233 psi to 1,299 psi).
10. Immediately open the gauge valve fully.
11. Turn the steering wheel all the way to the left and the right. If the pressure is within the specified limits, the problem is not in the pump. Check the power steering gear for leaks.