Help me in opening GLi auto Valve body

[engnr.mubashir]

Can anyone help me in removing auto transmission valve body I’m not be able to find any proper video that show how to open it I found a video but not much helping.
As there are so may bolts on valve body which makes me confused and only specific ones to be opened for removal.

[haseeb.basharat]

Why you want to do that at the first place?

[helper_learner]

@xulfiqar @dani_kk @rajaatta @hassan1991 @capsat

[Hassan1991]

You need service manual.
Which chassis we are talking about here?

[Mun33b]

Acquire the service manual of that specific transmission. Do you have new gaskets on hand for putting it back? if not, dont proceed. Also needs to be torqued back properly with all check balls in accurate places.
Transmissions are not everybodys cup of tea. I have replaced transmission filter of 1.6 Altis, planned to clean the valve body but chickened out. The Transmission code is same for 1.6 GLi I guess which is U340E.
You may be helped by this regarding lower valve body bolts (first the transmission filter is taken out):

A generic guide:
https://www.tcorolla.net/transmission_valve_body_assy_atm_-1180.html

[Xulfiqar]

Which transmission model?

Dont rely on just video, you will need to find the repair manual. Videos have a lot of missing steps

[rajaatta]

Please state the problem then proceed don't end up messing the transmission

[engnr.mubashir]

Not shifting gear to to compensate rpm as it stays on 3000 @ 80km/h speed.
I want to do its valve body service because here mechanic not offering any similar services for ATF transmission.

[engnr.mubashir]

U441e

[haseeb.basharat]

want to do its valve body service because here mechanic not offering any similar services for ATF transmission.

Where are you located?
Did you check condition of catalytic converter?
In case of 2016 civic turbo I faced the same problem. Turned out that it's catcon was chocked.

[rajaatta]

Come on it's almost near equal if the TCC is not engaged at 3000 rpm in 4th shift Corolla usually is at 100 km/h

[engnr.mubashir]

Cat con is ok.

[engnr.mubashir]

I have consulted a mechanic he is saying clutch is slipping need to overhaul gearbox but I’m insisting him to service valve body but he saying that if there was an issue with Valve body then transmission wouldn’t have worked like it’s working not and you will be getting frequent CEL.
I also got to check on scanned and they scan guy said that electrically transmission is ok it’s reading shifts but gear not making them happed and same with the kickback some times it works and other times it doesn’t.
It got P0977 DTC when first experience late shifting from 3rd to 4th rpm was frequently locking btw 5 to 6000.
I still thinks there something wrong with Valve body not the gear box may be chocked with sludge that prevents fluid from flowing to certain pressure.
I have also seen video on YouTube and mechanic were also targeting valve body for slipping transmission.
One thing more to note if drive the car aggressively then car shift perfectly into gear to maintain 80km/h speed @2000 rpms.

[haseeb.basharat]

but he saying that if there was an issue with Valve body then transmission wouldn’t have worked like it’s working not and you will be getting frequent CEL.

He is right, don't touch your valvebody, you will end up causing more harm to your transmission.
check your transmission's speed sensor. Try replacing it with used one and drive for couple of days. Solved the issue in case of my k313 cvt after spending a lot of time, money and efforts.

[engnr.mubashir]

Where it’s located the transmission speed sensor.

[haseeb.basharat]

Where it’s located the transmission speed sensor

In case of k313 cvt it was under air filter box.
In my case some rat went haywire on it, and no scanner was able to detect the issue at all. Transmission kept signaling the ecu to go into limp mode by keeping restriction of 2.5rpm, no fault code was ever recorded on any scanner.
Fixed dozens of grande with similar issue afterwards.

[rajaatta]

I think you have mechanical gear failure.

[engnr.mubashir]

There are some grips under air filter box don’t know which one is the speed sensor.

[engnr.mubashir]

Until now it’s what you have said.

[haseeb.basharat]

He can guide you way better then anyone else here.