Questions & Answers for: how to check ecm

...ECM. Check all battery wiring to the BCM/ECM for bad connections and shorts, (shorts, corrosion etc.), and test all voltages to ecm. Check for short to ground in ckt491 (Orange wire), check for Open ...

...ECM, ohm check good between ECM and injector. Other injector wire goes straight to ECM, also ohm check good. Fuses good. Noticed liquid oil on part of one ECM connector. ECM is mounted under dash. No ...

blown ecm fuse keep blowing ecm fuse in 1988 chevy s-10 what should i check first? unhook the ecm and check if the fuse does not blow,you will know if it is the ecm,Hope this helps

...check ecm fuse..not sure where your ecm is but if its by the battery..check for battery acid on ecm wires or it might be the ecm it self...make sure you gettig fuel..spray some starting fluid into ...

...check for ecm fault code, if check engine light not turning on when you start vechicle could have blowed ecm fuse or wiring problem, could have loose connection at ecm electrical connector or ecm ...

...at ECM. check fuse and ground circuits to ECM.the ECM could have failed but let dealership use a diagnostic scanner to check CAN serial data circuit to the ECM that way they can tell if ECM

...,find out if there is anything else on that ecm fuse if its just the ecm ,you will need a ecm,check your wiring from fuse box to the ecm if the wiring is good then you should know what to ...

and ignition coil, ignition coil and igniter. 9. Check and replace ignition coils with a good known one. 10. Check and replace ECM with good a known one . Hope that works. Thank you for visiting Fixya

...on and i went to change the old ecm and now there is no power to the new ecm Did you disconnect the negative battery cable before changing ECM? check ECM fuse, why did you change ECM in first

check the plugs connected to the ECM have no moisture or corrosion present check the battery terminals and battery posts are shiny clean and tight What the code is referring to is insufficient voltage