1996 Chevrolet S-10 Repair Question
What would cause my 12v pink power wire running to my icm, and ignition coil to be powerless?
Asked by bubby46.daAnswer
A bad ECM/IGN fuse # 10 (20 A) in instrument panel fuse block.
I checked all fuses in fuse pannel and all is well, where is my Ecm located at and what is the function of this part? thank you
ECM is the engine computer, the brain of the engine operating system.
I gather you have used a meter to test the fuse. What you need to test next would be the power supply to the fuse (# 10) with ignition switch turned. Both ends of fuse must have battery voltage.
Ok i will do so thanks, also is there a way that i could possibilly check to see if truely is my ecm? I was informed by a rep at autozone that there is a way to check if my ecm is working correctly or not please verifiy. If there is such a way how would i go about doing it thank you.
I checked the powere supply to the fuse with ignition switch on and it checked out.
If you have battery voltage at the fuse, it would mean there is a break in the wire circuit between the fuse and the ICM, etc.
is there any way you could provide a diagram of that circut, and does that rule out the ecm then?
I checked the voltage by turning the key to on and using a led light tester on both sides of the fuse, and both sides lite up meaning there is power there..is that a suitable test for what you were describing??
Yes, the test is correct. The fuse supplies power to the fuel injectors as well. If you do not have battery voltage to the fuel injector Pink wire, that would mean there is a break in the circuit between the fuse to the exterior.
The schematics are rather messy as they link 4 pages which are too small unless I enlarge them which would double the pages.
At the moment you do not need the, Confirm you have battery voltage ath the pink wire to fuel injectors, crankshaft position sensor, ICM and ignition coil. If no battery voltage is available, the engine would not start. This wire circuit also feeds the ECM.