Hey all,
My name is Jeremy, I’m a first time poster, long time forum reader.
I got myself in deep with my 2005 LR3 SE (4.4V8). It all started over a year ago when I accidentally broke the C0635 ECM electrical connector trying to remove it like an idiot. So I bought a new connector and re-pinned it. The truck ran good for a while and then I started having some other weird issues. It’s been so long that I’m not exactly sure what started it to be honest.
Long story short, I have a ton of MILs and faults, I thought it was the instrument cluster connections as so many others have had issues with that and all the modules had lost communication to the IPC. Soldered the connector connections just fine and then tried to re-flow the main IPC chip and totally messed up a selection of the pins on the chip and the traces on the board. Oops, my mistake, I’m handy but apparently not that skilled when it comes to soldering, lesson learned.
I bought a used IPC and an GAPIID tool to re-program the new IPC and contacted GAP to get the required instructions etc for the IPC flash. The procedure failed and in talking to GAP they seemed to think I have a CAN bus issue or some other power/ground issue. I have spent hours checking continuity between HSCAN wires between modules and connectors, MSCAN wires as well.
Then Patrick at GAP noticed that I wasn’t getting ECU info from all of the modules in the truck. In looking around it seems that all the modules are getting power and such but I have noticed something odd with the BCM (CJB), I noticed that the BCM only has 0.4V at the BCM control module…
Sorry for the long post, I really need to get this thing fixed and back on the road as I’m in Cleveland and snow is coming.
Does anyone know off the top of their heads if the BCM is supposed to operate on less than 12V? All other modules seem to operate on 12V, which leads me to think there’s either an issue with the BCM(CJB) or there’s a power issue to the BCM.
Can somebody with a GAPIID tool with a good running LR3 check live data and see what the voltage supply is at the BCM control module for me? (lol, ya I know what I said…good running LR3
)
Also if anyone else has ever dealt with something like this, does anyone know what the pin is for the supply voltage to the BCM? I have all the diagrams and such but I can’t seem to find what actually powers the BCM specifically. The BCM isn’t directly labeled on the wiring diagrams.
Thank you in advance to anyone who has any input for me!
-Jeremy
My name is Jeremy, I’m a first time poster, long time forum reader.
I got myself in deep with my 2005 LR3 SE (4.4V8). It all started over a year ago when I accidentally broke the C0635 ECM electrical connector trying to remove it like an idiot. So I bought a new connector and re-pinned it. The truck ran good for a while and then I started having some other weird issues. It’s been so long that I’m not exactly sure what started it to be honest.
Long story short, I have a ton of MILs and faults, I thought it was the instrument cluster connections as so many others have had issues with that and all the modules had lost communication to the IPC. Soldered the connector connections just fine and then tried to re-flow the main IPC chip and totally messed up a selection of the pins on the chip and the traces on the board. Oops, my mistake, I’m handy but apparently not that skilled when it comes to soldering, lesson learned.
I bought a used IPC and an GAPIID tool to re-program the new IPC and contacted GAP to get the required instructions etc for the IPC flash. The procedure failed and in talking to GAP they seemed to think I have a CAN bus issue or some other power/ground issue. I have spent hours checking continuity between HSCAN wires between modules and connectors, MSCAN wires as well.
Then Patrick at GAP noticed that I wasn’t getting ECU info from all of the modules in the truck. In looking around it seems that all the modules are getting power and such but I have noticed something odd with the BCM (CJB), I noticed that the BCM only has 0.4V at the BCM control module…
Sorry for the long post, I really need to get this thing fixed and back on the road as I’m in Cleveland and snow is coming.
Does anyone know off the top of their heads if the BCM is supposed to operate on less than 12V? All other modules seem to operate on 12V, which leads me to think there’s either an issue with the BCM(CJB) or there’s a power issue to the BCM.
Can somebody with a GAPIID tool with a good running LR3 check live data and see what the voltage supply is at the BCM control module for me? (lol, ya I know what I said…good running LR3
)Also if anyone else has ever dealt with something like this, does anyone know what the pin is for the supply voltage to the BCM? I have all the diagrams and such but I can’t seem to find what actually powers the BCM specifically. The BCM isn’t directly labeled on the wiring diagrams.
Thank you in advance to anyone who has any input for me!
-Jeremy
