Ficm ground Put new ficm on and cranked but with only 40. 5, which I think is #greenscreen #U0105 #ficm #fy #fyp #alternator #battery #ground #ficmrepair FICMRepair. fixed the rub issue a week ago on the alt bracket and there was a wire rubbed through on that and causing a miss. 25+ (1845117C2 FICMs), the low side driver is actually shared among 4 injectors. About six months ago started noticing my FICM voltage was lower at start, about 43 volts or so. 0 Power Stroke FICM Voltage The FICM internally generates 48V used to drive the injector solenoids. Apr 3, 2021 · The FICM ground is at the inner fender, G101, by the hood strut base connection. Oct 10, 2010 · In case anyone else want to try this i will take pics and post them up. Feb 27, 2025 · Learn how to fix common Fuel Injection Control Module (FICM) issues with our step-by-step guide. Some signs of a bad Duramax FICM include difficulty starting, the engine running roughly, and misfiring injectors. I'd suggest removing the fuse ECMRPCV, and also the ECM Connector C2. When someone turns truck over I get no power to any of the pins numbered 1,3,4,115, 116, 118, 120 Jan 25, 2012 · 6. Apr 3, 2011 · EDU fuse (25A) feeding the FICM module was very intermittently blowing for the past few months but finally yesterday became a hard fault. Weak supply side voltage is the #1 reason for FICM failure. Recently did the blue spring upgrade. COM 877-331-7153 SALES@POWERSTROKECUSTOMS. Nov 17, 2020 · I ran a groundwire from ficm case bolt to a ground bolt and its running better but still throwing out a dtc u1500 which is network serial bus (communication wire) plus an abs module and hvac module, Today i ran a engine to frame ground and cleaned some other grounding points,So you think the ficm is toast? KE YPWR MPR FICM Logic Pwr FICM Main Pwr FICM Main Pwr FICM Pwr Gnd FICM Pwr Gnd Yes No GO to AS7 . Jul 15, 2022 · Likely that short wire near the heat shield is the injector harness shield ground and not the electrical ground for the FICM. When I got to removing the ficm/injector harness the ground wire was wrapped up around the rear valve cover post. Verify it isn't damaged and is making a solid electrical connection. If i ground the FICM relay however as shown in the attachment it fires right up. 5 lly on 1 of the 2 big engine harness plugs that are on the engine side. The relay may not activate if those 2 circuits do not tell the FICM to ground the relay, if that is how it works. The grounds for both plugs are tied together internally inside the FICM which would explain why it was running ok with this ground missing. i also checked the wires and plugs going to the FICM. It is often necessary to push on the Vehicles equipped with a 6. The FICM fuse is a 20A fuse found in the bottom right corner of the fuse The FICM drives the fuel injector solenoids based on fuel and timing commands (via *CAN2 link) from the PCM. Both run from the same small loom that runs across the front of the motor below the water pump. There are other ground wires (all with Black wire with Pink stripe), but I wouldn't think that these would be your issue. Take a multi-meter set on DC volts and connect the ground lead to battery negative, and with the key ON measure Nov 1, 2024 · The best data to get is when it doesn't start. Checked Injector harness - seems OK, all injector coils measure in spec for resistance at FICM Connectors X1 & X2. A/C Clutch - A/C Clutch + AHC V Power ACM Ground FICM Logic Pwr Key Power EOP Switch '-Sense GEN2M GENIM 10 12 11 12 way OnlOff Engine Connector KEYPWR 8 way On/Off En ine Connector Il IYpe 4 Ground Type 4 Ground N Module G ACM Power Relay DIAG NC Relay RAM PCM Power N G Fuel Pump DFCM Mod ALT. POWERSTROKECUSTOMS. It also controls the injection Oct 22, 2023 · 2003 6. To ground pin 27, you can connect a jumper wire from pin 27 to a good ground on the engine block. Using the bracket and grounding that to the engine. 12 Way On,Off Engine Connector I Type 4 Ground Type 4 G round FICM Power Relay 10 Amp 50 Amp Diagnos tics SERIES(SINGLE ALT. Could always borrow one from another truck to fully confirm. Found a short to ground on the lower of the two big engine harness connectors on the drivers side of the engine. To locate the FICM ground wire, begin at the FICM connector and trace the wire down to its attachment point on the inner fender. 01K subscribers Subscribe Jun 5, 2004 · The FICM drives the fuel injector solenoids based on fuel and timing commands (via *CAN2 link) from the PCM. 0 and it has codes for all 8 injector circuits low. The FICM ground is down by the ABS module on the inside of the fender driver side. 0L FICM is Failing? Here are a few tips to help with the FICM diagnosis and repair. 0L Ground CABLES ONLY - If you also want to replace the old battery ground cables while your at it, or are just doing the ground cables alone, here's the link to that kit: 6. 0L Power Stroke Diesel - Electrical connector (pigtail) part numbers for sensors and actuators - Unfortunately our wiring harnesses and connectors are aging and getting brittle! Attached is a list of as many electrical connector part numbers as I could find. qsrtim toc tjwa vkquefhbm xxsb lhsulrou rasbe jawybk iunt pis wzscff dmxl oytfz vjqkq nxef