HOW DO CHANGE THE ECM

40

Asked by Sep 19, 2013 at 01:50 AM about the 2000 Nissan Frontier 4 Dr XE 4WD Crew Cab SB

Question type: General

NO OUTPUT FROM ECM TO AC/RELAY COIL SIDE,HAVE FEED FROM
THERMOSISTER TO ECM

5 Answers

....wait, hold everything...follow the black battery cable to the spot where it bolts to the frame...wirebrush the lug and the spot where it attaches...get a NEW battery 2000 is TOO old...five years max or the alternator will suffer~ your ECM is doing the best it can with insufficient ground~

1 people found this helpful.
6,190

Check all the fuses inside the car and should be a fuse box on the firewall or fender. But grounds are a good thing to check all so and yes a battery is probly only good for about 5 years. But we do not know how old the battery is in your car. It may not be a fuse it may be a relay

1 people found this helpful.
40

The a/c relay has voltage to the coil terminal 2 and 1, the points from terminal 5 to 3 are closed have 12 volts on 5 nothing on 3. Need help

2 people found this helpful.
6,190

Try replaceing the relay first. The ecm is going to cost you alot more money. You need to know witch pins are closed circuits and witch ones are open circuits all so. That maybe why you are getting the readings you are

40

I had changed the relay same problem. I know which is the coil and contacts. I'm only getting 4.8 volts out of the ecm terminal 21/ air con.

2 people found this helpful.

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