No full power - ZR-1 Net Registry Forums

gbmidyear66 · 03-23-2012

I would first do a quick check that your secondarys are opening, and that you secondary Vac system is holding vacuum (i.e. - pump does not run steady with key on, engine off).

You can check secondary actuator operation by "backprobing" - I believe it is pin C17 (check your FSM) on the ECM you want to connect to ground (I use a saftey pin to backprobe the signal).

With the ignition on, looking through the plenum with a flashlight at the secondary linkage - you should see the actuators open when you ground C17

If the above is all good - you are 90% there

03-23-2012	#12
gbmidyear66 Join Date: Feb 2008 Location: Vancouver, BC Posts: 251	Re: No full power I would first do a quick check that your secondarys are opening, and that you secondary Vac system is holding vacuum (i.e. - pump does not run steady with key on, engine off). You can check secondary actuator operation by "backprobing" - I believe it is pin C17 (check your FSM) on the ECM you want to connect to ground (I use a saftey pin to backprobe the signal). With the ignition on, looking through the plenum with a flashlight at the secondary linkage - you should see the actuators open when you ground C17 If the above is all good - you are 90% there