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Haltech Causing Ac Relay To Stay On When Ignition Is Turned Off

GTR260

By GTR260,
in Engines & Forced Induction

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GTR260 Proficient

GTR260

Posted
Posted

Recently put a platinum pro plug in into my 260rs, sll is fine while car is running, turn ignition off and the ac relay comes on and stays on untill ignition goes back on

If i put the stsndard ecu back in problem goes away.

Any ideas on why this would be happening while everything is off?

Anyone else had simmilar issues?

DVS JEZ Grand Master

DVS JEZ

Posted
Posted

Yes this is a common issue in r34. Because the ac has a hot feed from memory. I hvent had to fix one but i do know of it. Have a look at the link instruction manual. There is a section at the end that explains what to do

GTR260 Proficient

GTR260

Posted
  • Author
Posted

Ok this is what it says:

Back Feeding on R34 – On R34 GTR models the A/C relay is hot fed. This will cause a back feed that will drain the battery. The power supply to the A/C relay must be changed to an ignition switched source or Aux 3 (pin 9) disconnected from the ECU. It is possible to use the power supply to the injector ballast resistors as the feed for the A/C relays coil.

If i disconnect pin 9, will the ac still work?

lilcrash Veteran

lilcrash

Posted
Posted

There is a quick and easy fix for that. Just cut the wire and install a relay with a switched power from the ignition.

We can sort it out one night I you want, I'm pretty sure you wont want to swap cars so I can do it at work.

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