ECM Ground & 5 Volt Interactive Wiring Testing, using the interactive wiring diagram system. See how it's dome using a 20 OHM resistor and how to stress the circuit for testing.
This explans why i have a different ground to the battery ground on all my engine sensors, the imrc also has a different 12volt and ground supply aswell, the imrc is an actuator with active electronics inside attached to the engine, the imrc contains its own micro controller which is always listening to the ecm so the imrc must need clear power and uninterrupted data communication to the ecm
Wow. This is super helpful. First I didn’t know that the sensor grounds were filtered through the ECM. So testing signals relative to chassis gnd (like I was) doesn’t give an accurate result.
Just to confirm what you are saying, you connect the resistor (load), then you connect the volt meter to the same places so you are wired in parallel, not in series? For the ground test you do the same thing, yes? (You never say where the meter is connected in that test.)
i just had massive electrical weirdness from a FAULTY/SHORTED crankposition sensor..........it was NEW. Cheap @ $13 vs the proper $55 AC DELCO version. But messed things up........... fuel gauge going crazy, ignition coil zapping away, other solenoids clicking away. I had put in a new ECU also- and trying to do a 30 min key relearn in order to start. But the above fouled things up UNTIL I just swapped the old, good CKP sensor back in. Crazy!
Very informative and comprehensive, easy to follow. Thank you for posting this up!
Awesome video!!
AWESOME video, thank you for posting, just need a few freebies now ,,,, 🙂
this video is fantastic a good knowledge sharing thanks
This explans why i have a different ground to the battery ground on all my engine sensors, the imrc also has a different 12volt and ground supply aswell, the imrc is an actuator with active electronics inside attached to the engine, the imrc contains its own micro controller which is always listening to the ecm so the imrc must need clear power and uninterrupted data communication to the ecm
So good to rely on.
thank you
سلام وتشکر وهزازان هزار 👍 ...👍...👍.....جناب مهندس خواهشمندم در این باره ویدیوهای بسیار بیشتری بامشخصات نقشه ای کامل وزمان بیشتری زحمت بکشین....ممنونم
I just love it
Wonder where i could get a diagram for a 2004 gmc sierra?
Wow. This is super helpful. First I didn’t know that the sensor grounds were filtered through the ECM. So testing signals relative to chassis gnd (like I was) doesn’t give an accurate result.
Thanks
Sir, NASTF conducted any course for ecm reprogram. What kind of equipments need for reprogram a ecm
hello, your videos are very helpful i like to know what software you are using for the wiring diagram. thank you..
amigo donde se consiguen los pint out y Diagramas d las ECUS circuitos electronikos
To check a PCM or PCU or ECU, U need to test ¹Power supply, & Ground, & Bus Cumminication, 1st. By attaching PC to car, should be 12volts or more.
Where do you find a diode for a PCM located in the fuse panel mustang
Just to confirm what you are saying, you connect the resistor (load), then you connect the volt meter to the same places so you are wired in parallel, not in series? For the ground test you do the same thing, yes? (You never say where the meter is connected in that test.)
i just had massive electrical weirdness from a FAULTY/SHORTED crankposition sensor..........it was NEW. Cheap @ $13 vs the proper $55 AC DELCO version. But messed things up........... fuel gauge going crazy, ignition coil zapping away, other solenoids clicking away. I had put in a new ECU also- and trying to do a 30 min key relearn in order to start. But the above fouled things up UNTIL I just swapped the old, good CKP sensor back in. Crazy!
Thanks very informative