The only suggestions I can offer are from my FSM. I will only list things that you have not checked but realize that your Gen2 might be different than my Gen3.

Magnetic Clutch is not switched ON:

1. Check Dual Pressure Switch
2. Check the air inlet sensor
3. Check the thermo sensor
4. Check the air conditioner control unit



92 Montero LS 3.0L V6 Auto, Stock, Original owner, 185,800K miles