hotrex

i have a 91 crx si. trying to install this damn s-afc. im using apexi wiring diagram h-1. when i wire up the power and both grounds i flipped on the igniton to check if it was powering up and it doesnt. when i touch the power wire to the battery and use the battery grounds it works fine. am i using the right diagram? what could be causing the s-afc to not power up. the ecu is recieving power but not the s-afc. im stumped.

thanks for your help guys.

quickcrx702

taken from mechanic_b.

Apex-I AFC VTEC controller
for PM6 (88-91 civic/crx) or PG7 (88-89 1.6L integra) ecu application only


V-AFC VTEC controller ECU PIN location
Red & Orange wire splice/connect to A15 (yellow/black)
Green wire RPM signal splice/connect to B15 (white1)
Pink wire VTEC signal output to VTEC solenoid (green/yellow)
Purple wire VTEC signal input not used on PM6 ecu
Blue wire VTM signal not used on PM6 ecu
Gray wire Throttle signal splice/connect to C7 (red/blue wire)
Yellow wire Pressure signal output cut/connect to C11 ECU side harness
Si/Hf = white1 , DX = orange
White wire Pressure signal input cut/connect to C11 ENGINE side harness
Si/Hf = white1 , DX = orange
Black wire Ground splice/connect to A16 (brown/black wire)Engine side harness
Brown wire Ground splice/connect to A16 (brown/black wire)has to be connected closer to the ECU


i KNOW FOR A FACT that this wiring will work on your car. i just wired mine up yesterday on my crx on the same ecu as yours - pm6

good luck

quickcrx702

oh, this is actually for a VAFC, not an SAFC. however, the wiring should be EXACTLY the same - with the exception that you wont be hooking up the pink vtec wire. other than that, make sure you connect the brown wire ground closer to the ecu.

hotrex

thanks alot.....