JohnnyD902

On the 3SGTE Gen 4 (ST215) the valve is to atmosphere. It has hose that typically routes to the air filter box. Most people (like me) run a small filter on the IAC port in place of the hose. I can change the valves in the idle base position table to 0% duty cycle and the valve does close. Should I just expand the idle base position table to 9000 RPM and add all 0s in higher RPMs?

I am trying to setup my IAC and it doesn't close as RPM (or TPS position) increase. I have a 3SGTE Gen 4 with a stock throttle body and IAC (same wiring as 1ZZ IAC). I have confirmed that the IAC is properly wired and it seems to adjust properly with duty cycle changes, so its not stuck. With the IAC open it's a giant vaccum/boost leak. I noticed that on most posts people set the TPS and RPM lock out at very low values like 400 rpm which is way below normal use. I've tied to adjust RPM lockout to 1500 RPM and the TPS lockout to 5% but nothing happens with the IAC. Shouldn't the IAC close (duty cycle 0%) if the RPM or TPS is above the lockout values? Any help would be great.

I pulled the terminal out of the connector at pin 32. I was eventually able to measure the voltage at the pin 32 at 6.95V. I will say that it’s very hard to perfectly pick up the pin with a needle probe on my multimeter. I had to fish around to get a real reading off the pin. Any other ideas?

No, but I cut my butt connector off the original Link A loom. I haven't touched the pins of the A loom. I also noticed that both my ECU ground wires run to grounds on the engine. I'll fix that but I don't that is making a difference with the engine off.

I was trying to diagnose a 5V Analog Supply Fault (code 74). I was measuring the input voltage at each sensor at 7.06V. I disconnected the circuits connected to pin 32 at the Monsoon and the voltage coming out of the Monsoon at pin 32 is 7.06V. Everything I read says it should be 4.9-5.1V. What could I be doing wrong?