Montero Sport XLS 4WD V6-3.5L SOHC (2002)
Power Steering Pressure Switch: Testing and Inspection
POWER STEERING PRESSURE SWITCH CHECK
Required Special Tools:
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MB990662: Pressure Gauge
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MB990993 or MB991217: Power Steering Oil Pressure Gauge Adapter (Pump Side)
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MB990994: Power Steering Oil Pressure Gauge Adapter (Hose Side)
1. Disconnect the pressure hose from the oil pump, and then connect special tools MB990662, MB990993 or MB991217 and MB990994.
2. Bleed 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. The engine should be idling.
4. Disconnect the connector for the oil pressure switch, and place an ohmmeter.
5. Gradually close the shut-off valve of the pressure gauge and increase the hydraulic pressure, then check whether or not the hydraulic pressure that
activates the switch is the standard value.
Standard value: 1.5 - 2.0 MPa (218 - 290 psi)
6. Gradually open the shut-off valve and reduce the hydraulic pressure; then check whether or not the hydraulic pressure that deactivates the switch is
the standard value.
Standard value: 0.7 - 1.2 MPa (102 - 174 psi)
7. Remove special tools MB990662, MB990993 or MB991217 and MB991549, and then tighten the pressure hose to the specified torque.
Tightening torque: 20 Nm (14 ft. lbs.)
8. Bleed the system.
