P1772. Replaced valve body, problem still occurs!

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727G35
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Joined: Mon May 20, 2019 6:38 pm
Car: 03 5at g35 sedan

P1772. Replaced valve body, problem still occurs!

Postby 727G35 » Fri Jan 31, 2020 2:58 pm

I have an 03 sedan g35. Had only p1772 since I got it at the auctions.
I got a remanufactured valve body, completely replaced it. Reset the computers, and it popped right back up. Please I need advice. I love this car but I just cant seem to know what to do!


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audtatious
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Re: P1772. Replaced valve body, problem still occurs!

Postby audtatious » Wed Feb 05, 2020 3:32 pm

https://www.nicoclub.com/FSM/G35/Sedan/2003/at.pdf Page 217

Seems to indicate it's a connector issue or the low coast brake solenoid gone bad.

Follow through the procedures and see if it finds other things.

727G35
Posts: 58
Joined: Mon May 20, 2019 6:38 pm
Car: 03 5at g35 sedan

Re: P1772. Replaced valve body, problem still occurs!

Postby 727G35 » Thu Feb 06, 2020 10:01 am

The solenoid is on the valvebody correct? What's the chance that both of them have the same exact code?
If I unplug my car, it will accelerate faster, but still shift sloppily, then the code is right back.
Should I just pay a shot to swap my tranny or just get rid of it??

727G35
Posts: 58
Joined: Mon May 20, 2019 6:38 pm
Car: 03 5at g35 sedan

Re: P1772. Replaced valve body, problem still occurs!

Postby 727G35 » Thu Feb 06, 2020 10:21 am

And I tried to go to the link and its not working for some reason

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audtatious
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Re: P1772. Replaced valve body, problem still occurs!

Postby audtatious » Thu Feb 06, 2020 2:44 pm

The link works directly for me. Try https://www.nicoclub.com/infiniti-service-manuals and then go to the model/year of your car and open the at.pdf file

This may not be a problem with the actual solenoid. It's turned ON and OFF by the TCM in response to signals from the PNP switch, vehicle speed sensor and accelerator pedal position sensor. The first step is to validate the harness and connectors. I would go through the above FSM and validate each of those components are outputting the proper signals and they are being received properly as well. If the components of the valve body were not the actual problem then replacing it won't solve the problem.


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