Codes P0700 and P1782, big wiring harness by transmission diagram needed

JAY HUEBNER

MEMBER
2000 CHRYSLER GRAND VOYAGER
3.3L
V6
2WD
AUTOMATIC
150,000 MILES

Hello, I hope you can help. I ran something over on the road and it cut my big wiring harness by my transmission clean in half. About 57 or so solder connections later I have her running again but now stuck in limp mode. My codes are p0700 and p1782 I have found that one of the speed sensors got yanked in half as well. I have replaced that one but still in limp. I'm in need of a wiring diagram to check my work and was also wondering g if the TCM and speed sensors are bench testable. Nothing else seems to jump out at me that it's broke so I think I have to check all the wires pertaining to my codes for continuity. And help you guys can give would be greatly appreciated. Thanks, Jay

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3 Replies

JACOBANDNICKOLAS

MECHANIC
109,885 POSTS

Hi,

First, excellent job on the wiring repairs. I wish more techs would do it that nicely.

As far as the code, the P0700, and P1782, the first thing the manual indicates can cause them is a low voltage. Make sure there are no other wires that were damaged. Also, confirm there is 12v + at the battery with the engine off and approximately 14v with the engine running.

If you haven't already, delete the codes and see if they come back. If they do, I attached the diagnostics related to each one below. It explains what to check.

Take a look below. I started with the P0700 diagnostics which are included in the first six pictures. Pics 7 -13 are the diagnostics for the P1782. Make sure no fuses are blown as well. Additionally, when checking the fuses, make sure there is power to them.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

The last 4 pics are of the wiring schematic for the transmission circuit. There were two pages, but I had to cut them each in half to make them readable.

Here is one more link you may find helpful:

https://www.2carpros.com/articles/how-to-check-wiring

I hope this helps. Let me know what you find or if you have other questions.

Take care,

Joe

See pics below.

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Friday, August 13th, 2021 AT 10:12 PM

JAY HUEBNER

MEMBER
2 POSTS

Well, first off I want to thank you for the information you were able to provide. It helped me go over my and confirm that all the wires were connected satisfactorily. However while going through my wiring I did find that the bolt inside the TCM that secures the TCM plug broke out during the "yank" just before the harness was severe. Along with the output speed sensor that was broke in half during the event as well. I replaced both speed sensors and the TCM. Checked continuity through all wires and connectors. I felt the plug for the transmission range sensor and I can kind of wiggle bit back and forth. Don't know if that's normal but I'm left wondering if that part is another casualty of the event. I don't have access to a scan tool or other diagnostic equipment other than my multimeter. Is there a way to test a transmission range sensor before I attempt to replace the part. I understand on the Chrysler a06 41te transmission you have to drop the valve body. And mind you I'm doing this in my drive way, lol. Any help you could provide would again be greatly appreciated. Thanks again
Jay

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Sunday, August 22nd, 2021 AT 6:21 PM

JACOBANDNICKOLAS

MECHANIC
109,885 POSTS

Hi,

You have your hands full. I did find a test for the sensor. It starts indicating to connect a DRB, which stands for diagnostic readout box (scanner). After that, it explains checking the wiring.

Take a look through the attachments and let me know if they help.

Take care,

Joe

See pics below.

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