1JZ no idle-up for A/C
- Thread starter nctexan
- Start date
No the idle up circuit in the ecu is responable for that. Do you have the a/c pin wired up correctly?
hvyman;1729737 said:
I don't know. What is the "a/c pin"? Looking at the A/C circuit diagram, I see an "A/C short pin", is that what you are referring to? I've got the magnetic clutch going to the clutch relay, and then that goes to my #9 pin on my EA2. It kicks on fine, and blows cold (I installed new parallel flow condenser and new dryer). However, when I turn the a/c on, my tach signal disappears, and my hazard symbol lights up (constantly, doesn't blink) on the dash, hahahaha. I know something is not right. Plus when I push the "low" blower fan setting, nothing blows (not that I really would ever have it on low, but just to disclose all detail).
In relation, when I turn my hazards on, my tach needle goes up and down to the blinking of the hazards. Like every time the hazard blinks on, the tach needle falls to zero, then when the hazard blinks off, it jumps back to whatever rpm the motor is at. sigh...
for the blower "LOW" not working that is the blower motor resistor. Its shot, replace it and your medium & high speeds will be even faster then what they are right now.
hvyman;1729973 said:
Thats for a jza70. Last connector on the right has the a/c idle up pin.
So plug "T", pin#7 then?
---------- Post added at 05:09 PM ---------- Previous post was at 05:01 PM ----------
OneJArpus;1730062 said:
Where is the blower motor resistor located? The TSRM gives inspection instruction for resistance, but it doesn't mention anything about location. I know it is a relatively flat 6-pinned deal though - http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?S=AC&P=30
I do. So following the 1JZ EFI diagram, http://www.1jz.com/tech/docs/wiring/WiringEFI.pdf (pg. 3)
it shows a blue and red wire coming off of pin#7 on the 1J ECU, which then goes to pin #11 of the IH1 connector, which is then mapped to my MA71 B1 pin#11. It then shows the blue and red wire coming off of IH1 and going to the "A/C Service conn." So I need to confirm that IH1 pin #11 is going to B1 pin #11 first. But what and where is the "A/C service conn" ?
it shows a blue and red wire coming off of pin#7 on the 1J ECU, which then goes to pin #11 of the IH1 connector, which is then mapped to my MA71 B1 pin#11. It then shows the blue and red wire coming off of IH1 and going to the "A/C Service conn." So I need to confirm that IH1 pin #11 is going to B1 pin #11 first. But what and where is the "A/C service conn" ?