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Sorry I should have clarified, the 1416 is there the whole time. The 1571 went away and came back. I will check the ground when I get off work. When you say check the ground on 25 you do mean to put the DMM in ohms and to test the wire like I was testing for voltage? I believe I did that yesterday and was getting 0 ohms.
Sorry I should have clarified, the 1416 is there the whole time. The 1571 went away and came back.
That doesn't make sense. If you get a check engine light after driving for a short time.....pull over and park with the engine running..... and you check codes on the DIC which shows a P1416....and you clear the code, it is gone until the next ignition cycle.
Originally Posted by RidgebackDaddy
When you say check the ground on 25 you do mean to put the DMM in ohms and to test the wire like I was testing for voltage? I believe I did that yesterday and was getting 0 ohms.
Exactly. Before you were checking for voltage at position 25 with the ignition on. Now you will be checking ground at position 25 with the ignition off.
If you really have 0 ohms at position 25, you have found your problem.
Can you elaborate on what the problem is if its 0 ohms?
That would be a direct short to ground, which means the wire for that circuit has found a path to ground somewhere between the EBTCM connector and the PCM.
I just tested 25 in ohms and it was jumping everywhere. I saw it go as high as 89 and down to zero. It showed continuity. So that means it's definitely short to ground? I'll try to follow the wire as much as I can until the wheels are off.
Last edited by RidgebackDaddy; Oct 24, 2024 at 07:12 PM.
I just tested 25 in ohms and it was jumping everywhere. I saw it go as high as 89 and down to zero. It showed continuity. So that means it's definitely short to ground? I'll try to follow the wire as much as I can until the wheels are off.
To be clear, you have the EBTCM connector disconnected from the EBTCM, and ignition is off. When you probe position 25 (connector is held stationary), referenced to a KNOWN good ground, the measured resistance fluctates between 0 and 89 ohms? If that is the case, I really question the meter, leads, and/or ground choice.
These are all my codes at the moment. I believe the 1689 is for the TC
P 1571 P 0410 P 1689 P 1416 U 1040
History or Current? You had some ignition cycles with the EBTCM connector off, so that should account for the U1040, but the P1689 will only set if the engine is running, and you said there were not other codes besides P1571 and P1416 from your last drive.
The P0410 only sets if both banks did not respond to the AIR test, but again....you would have had to drive the car for at least one ignition cycle for that to set. Please reset your codes !
History or Current? You had some ignition cycles with the EBTCM connector off, so that should account for the U1040, but the P1689 will only set if the engine is running, and you said there were not other codes besides P1571 and P1416 from your last drive.
The P0410 only sets if both banks did not respond to the AIR test, but again....you would have had to drive the car for at least one ignition cycle for that to set. Please reset your codes !
Yeah the P 1571 has been making the car rev which is why i'm even doing this (idc about TC), P 1689 came when I took the ebcm out and then started it and yeah P1416 and U1040 are from the last drive. P 0410 has actually been there for a little bit. I haven't done anything about it because we don't care about emissions here.
Yeah the P 1571 has been making the car rev which is why i'm even doing this (idc about TC), P 1689 came when I took the ebcm out and then started it and yeah P1416 and U1040 are from the last drive. P 0410 has actually been there for a little bit. I haven't done anything about it because we don't care about emissions here.
Ok. I don't feel like the whole story has been shared here, so I'm stepping away. One final thing.....check your engine vacuum.
Think I found the whole story. Got the wheel off and took the pcm out. These were chewed going into the plugs on the bracket holding the pcm in place (which I now have to buy a new one for since 25 year old plastic is so brittle).
I started the car before the wheels came off because I put the ebcm and everything all back in and the only code I was getting this morning for the 10-pcm was the 1571.
