Help with Limp Mode, ECM communication & a delicious concoction of issues!
#21
Well, If all else fails I will get another code reader like the ELM and try and use that to figure it out.
After some more reading, I'm going to check out some fuses under the hood and the one in the Primary junction box to eliminate that possibility if nothing else.
Also, I think this may be relevant, but the "R" indicator light on the J-Gate doesn't illuminate when Reverse is selected. It has been that way for a while and didn't appear to produce any negative effects thus far. Coming to think of it, shortly thereafter, the Park interlock solenoid / functionality went out as well. Is it possible that the J-Gate module could be shorting and causing these issues?
Like I mentioned earlier, since I've already got a working J-Gate replacement unit, I was going to swap it in and check it out anyway. Is this worth a look /effort?
Thanks
After some more reading, I'm going to check out some fuses under the hood and the one in the Primary junction box to eliminate that possibility if nothing else.
Also, I think this may be relevant, but the "R" indicator light on the J-Gate doesn't illuminate when Reverse is selected. It has been that way for a while and didn't appear to produce any negative effects thus far. Coming to think of it, shortly thereafter, the Park interlock solenoid / functionality went out as well. Is it possible that the J-Gate module could be shorting and causing these issues?
Like I mentioned earlier, since I've already got a working J-Gate replacement unit, I was going to swap it in and check it out anyway. Is this worth a look /effort?
Thanks
Last edited by Sangeeth Mullassery; 06-23-2020 at 03:11 AM. Reason: spelling
#22
#23
#24
Not much help but I have never been asked to disconnect the battery when operating the SDD?
Like you said how would you even do that?
Does the J-gate give any errors in SDD? If it does not I think the indicator light might be burned out.
Have you unhooked the ECM to inspect the plug? We have seen some strange stuff if any moisture gets into it.
A long shot but thought I would mention it.
I would read and clear all DTC's.
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Like you said how would you even do that?
Does the J-gate give any errors in SDD? If it does not I think the indicator light might be burned out.
Have you unhooked the ECM to inspect the plug? We have seen some strange stuff if any moisture gets into it.
A long shot but thought I would mention it.
I would read and clear all DTC's.
.
.
.
#25
Is there enough slack in the J-gate harness to plug in the new one without removing the old? If so, that would be quick and easy to try. I find it very interesting the R won't illuminate. An LED is usually very reliable, so I'd suggest getting that squared away first, just in case it is somehow affecting the TCM.
And Sangeeth, I've got to admire your patience and tenacity. Keep plugging away!
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