Leaderboard

hi, Finally managed to sort this out. Hope this may help you guys too. Setp by step diagnosis: ----------------------------- 1) i removed the power out sockets ( there are two connecters for two fan motors. refer pic attached) from the fan controller unit and checked the voltage using a voltage meter. Power is there when i switch on the A/C. - > Meaning no electrical issue upto the fan controller output. 2) Then using a flexible wire i directly gave power to fan motors from the battery. a. Left side one started immediately. - meaning no issue b. Right side not started immediately. when i tap the fan motor with a screw driver it started to rotate. seems there is a brush contact issue inside the motor. - > Meaning i had to replace the faulty fan motor ( since motor is sealed type, cant repair ) 3) Reason why both fans were not working was b'cos, two motors are powered in "series mode" from the fan controller. Thus if one is not working, other will also not work. :-( 4) If the cooling system is not wirking well and not maintaining the temp, ECU will automatically shutoff A/C system to avoid any further damages to the engine & radiator. -> Thats why a/c went off. 5) I managed to find a used fan mortor from a recon-parts shop for USD 70. Now everything back to normal. Note: please check whether fans get triggered for both A/C as well as radiator temp. - To test this 1st switch off a/c and let the enegine to run for a while. Make sure you have enough radiator coolent. At a certain temp radiator colling system will trigger the fans. if this is ok that means radiator cooling system thru radiator temp trigger is woking normal. - Next switch on A/c and set below; i) Temp = MAx cold ii) Air recurculation mode = internal circulation , iii) Blower speed = Low. Let the A/c runs for a while. at a certain point A/C compressure will cut off. at the same time fans will also switch off. If htis is happeneing then that means radiator cooling thru A/c system trigger is working normal. hope this will help you guys. Cheers