SOLVED! - Fuse 28 PCM-1 blows randomly - GMTNation
2021年8月9日 · Fuse #28 serves ignition coils as you know and fuel injectors as @budwich stated and also C1-19 of the PCM. This fuse is energised through terminal C of the ignition switch once the RUN position is reached. PCM and BCM communications are established before the key even reaches the ACCY position.
How to Diagnose a Failed PCM in a 2008 Chevrolet Silverado
2019年6月18日 · Checking the ECM-PCM Fuses at the Under-Hood PDC (Power Distribution Center) Next , The Mechanic Pulls the Cover from the PDC and using his “Scope-On-A-Rope” Power Probe expecting to see a Nice, Bright Light in the Probe Handle if these Circuits are operational. First… he probes FUSE # 56 (Key ON→ HOT in RUN or START).
Fuse #10 PCM B blows instantly - GMTNation
2012年12月3日 · Figures. I start digging more and found that fuse #10, labeled PCM B (20A) is blown. Fuse #28 is PCM 1 and it is OK. If a PCM fuse is blown that can't be a good thing... Swapped it with a new one, turned the ignition, and the SES light came on for the test as it should. Tried to start, nothing. Released the key, no SES. Checked the fuse, blown.
What could blow the PCM1 Fuse (15a) #28? - GMTNation
2013年10月18日 · An overload in the PCM or intermittent short circuit to a grounded circuit or piece of sheet metal. I'd be taking the wiring harness covers off and inspecting the wiring very carefully between the fuse block and the PCM. Especially look for …
Fuse 28 (pcm1) keeps blowing - GMTNation
2019年1月9日 · PCM fuse blew again I watched a video on youtube about some guy who says that most of the time is the fuel pump who shorts or the fuel pump cable So i removed the fuel pump relay ( micro relay 41 ), replaced PCM1 fuse ( fuse 28 ) and the fuse don't blow
Blown PCM fuse #7 - Ford Forums
2011年4月7日 · From dash fuse 7, the circuit branches to the PATS module (above the fuse block), then goes thru the firewall to the PCM Power Diode, and continues to the noise capacitor, to all the coils. See if the capacitor looks burned.
PCM I fuse keeps blowing (#28), maybe a bad ground?
2018年1月25日 · The unpleasant part of that is that fuse 28 feeds 8 separate wires if I’m reading the schematic right. All injectors and all ign coils are powered from there. Checking continuity from the non-battery side of the #28 fuse terminal to ground shows there is a short... now I know what, time to find where.
No power to the PCM B fuse and fuel pump relay. - GMTNation
2018年12月17日 · So PCM B fuse would only have power from from PCM itself, when the key is turned to prime the fuel pump and when the vehicle is running. That's where I'm stumped. I don't know if it's possible a bad ground somewhere, the PCM itself is bad, or maybe a bad connection at the fuel pump. The fuse slot pins didn't seem loose when I was probing them.
What long term damage with no installed PCM Fuse(s) cause, if any?
2018年12月10日 · IIRC, the truck will still start without the mega fuse, just lights, dash and stuff won't work. Disconnecting the battery is too obvious and maybe even the most inept person could reconnect it if he spots it. Pulling the PCM fuses will make him think it's something more than just a dead or disconnected since lights and stuff will work.
2018 Explorer battery drain - Ford Forums
2022年12月16日 · The issue is within the hatch door panel. The washer fluid leaks onto the camera connector causing corrosion which shorts the system.. keeping the pcm awake and draining the battery! For temporary remove the fuse for the camera and this should correct your issue until you replace the camera connector or bypass the connector.