Montero Sport LS 2WD V6-3.0L SOHC (1998)
Rear Differential Lock Air Pump Check
1. Install air hose to the differential.
2. Connect a pressure gauge to the air pump discharge outlet nozzle, via the air hose and T-joint.
3. Apply battery voltage to the air pump connector.
4. Measure the time when the pump starts and stops operating, and ii stops within five seconds, the pressure switch inside the pump is normal.
5. Measure the pressure 10 - 20 seconds after the pump has stopped.
Standard value: 25 - 40 kPa (3.6 - 5.8 psi)
If the pressure is within the standard value, the release valve inside the pump is normal
6. Check that the pump does not begin operating for five minutes after it has stopped.
7. If the inspection for 4 - 6 is normal, then the pump is fully operational
Rear Differential Lock Detection Switch Check
1. Connect an ohmmeter to the detection switch connector.
2. The rear differential lock switch is in good condition when the rod of the detection switch is pulled, there should be continuity, and when it
returned to its normal position, no continuity.
