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IAB control issues

Posted: Sat Apr 27, 2019 1:32 am
by dylprelude
Trying to find a work around to get IAB secondary runners functioning.

My setup is jdm p72 running s300
Vehicle 97 prelude sir h22a

Obd2a - obd1 conversion harness.

2 pin connecter on wiring harness for iab
Yel/blk: ignition off we have ground, ignition on we have no ground. (Does not change with iab invert function in smanager)

Red/blu: 12v constant ignition on or off. (This voltage drops to 11 with iab invert function)

Have read a couple of "work arounds" but doesn't seem right for this.

Re: IAB control issues

Posted: Sat Apr 27, 2019 8:21 pm
by dylprelude

Both pins only have 12 volt with igntion on

Re: IAB control issues

Posted: Sun Apr 28, 2019 6:48 am
by BCMotors
Have you datalogged to see if Hondata is telling the IAB to open? Are you sure they're not opening?

I blame the jumper harness, because It's always the damn jumper harness. (DEAR HONDATA pls make more ecus with built in obd2 jumper)

Also, double check your connections on the engine. I've seen IAB and IAC plugs swapped by accident. Maybe even that evap solenoid. Check everything in that area with the same style plug.