i have been trying to get my heat working for 3 months now. i bought 2 used logicons and neither one worked so i took them apart and resolderd all the solder points on both and they still dont work.the lights work and nothing else,no fan not even a sound when i push the buttons. i check fuses and tested the fan. what else could it posibly be? im gettin so pissed at this thing. it seems to me as if its not getting any power to the logicon. what shoul i do? does anyone have a wire diagram?

 

http://www.cochran-racing.com/FSM/s4...NG_DIAGRAM.pdf


page 50-64

 

that dosent really show like which wires go where and which ones to test does it?

 

well if you can figure it out yes...they have a "how to use" at the top of the page

 

wat else could possibly cause this issue?

 

well i just looked at the diagram and its not going to be the logicon cause that also controls the lights(plus you also replaced it).it could be the blower unit,the rec.-fresh select motor or possibly the fan amp.just start testing power and ground on those.


if something is getting power but no power is leaving its going to be the unit**so you cant just test power going in you need to test it coming out also**

 

well i did test the power wire to the blower and it had no power. and wouldnt the blower still work even if the rec. fresh select motor wasnt working? and i tried 3 differnt fan amps.

 

ya i think your right about the fresh select...just back track (following the diagram)from where you had no power at the motor. backtrack untill you find power

 

thats kinda hard to do without pulling the dash lol. but wait, is the air mix motor the same thing as the fresh select? if not whats the purpose of the fresh select?

 

i think the fresh select is just the swich for the air mix...and as for taking the dash apart ummm haha that would suck but they have a how to in the second gen archives

 

well i am doing a dash swap from red to black so maybe ill just wait till then. im assuming it will be easy to fix with the dash out

 

https://www.rx7club.com/2nd-gen-archive-72/dash-removal-how-230335/

good luck and keep me posted

 

sweet i didnt relize it was so easy to remove. ive done a few dashes before that were horrible to work on. now im pumped to get that old dash out fix my heat instal new carpet and new black dash!!