Mirage Sedan LS L4-1834cc 1.8L SOHC MFI (1999)
Power Steering Pump: Testing and Inspection
OIL PUMP PRESSURE TEST
1. Disconnect the pressure hose from the oil pump, and then connect the special tools.
2. Bleed the air, and then turn the steering wheel several times while the vehicle is not moving so that the temperature of the fluid rises to
approximately 50 - 60°C (122 - 140°F).
3. Start the engine and idle it at 1,000 ± 100 r/min.
4. Fully close the shut-off valve of the pressure gauge and measure the oil pump relief pressure to confirm that it is within the standard value range.
Standard value: 9.8 MPa (1,422 psi)
CAUTION: The pressure gauge shut off valve must not remain closed for more than 10 seconds.
5. If it is not within the standard value, replace the oil pump.
6. Check whether or not the hydraulic pressure is the standard value when no-load conditions are created by fully opening the shut-off valve of the
pressure gauge.
Standard value: 0.2 - 0.5 MPa (28 - 71 psi)
7. If it is not within the standard value, the probable cause is a malfunction of the oil line or steering gear box, so check these parts and repair as
necessary.
8. Fully open the shut-off valve of the pressure gauge.
9. Turn the steering wheel all the way to the left or right; then check whether or not the retention hydraulic pressure is at the standard value.
Standard value: 9.8 MPa (1,422 psi)
10. If not at the standard value, replace the power steering gear box.
Remeasure fluid pressure.
11. Remove the special tools, and then tighten the pressure hose to the specified torque.
Tightening torque: 18 Nm (13 ft. lbs.)
12. Bleed the system.
