Not sure if this helps but there is a technical document online about the CAN MH series sensors here.

https://www.google.com/url?sa=t&source=web&rct=j&opi=89978449&url=https://www.temposonics.com/docs/temposonicslibraries/literature/mh/551027_mh_series_mh_canbus_data_sheet.pdf&ved=2ahUKEwia5t_onpyMAxV8mYkEHSmTIPoQFnoECD4QAQ&usg=AOvVaw2hZUbSmqhLq2NeI4nnUC68

Thanks for the replies.
We have conducted initial troubleshooting on the Combilift unit and identified that the rear wheel drive sensor is malfunctioning and not providing output to the controller. The sensor in question is a CAN bus-based Temposonics sensor, model MHC0335MN15F3C01215L, which is currently not transmitting any signal.
Can anyone share its troubleshooting manual as web is not supporting.

Hi Umair,
Pre usual you have got excellent direction from all on this forum, which is aligned with the operator manual. If this was a truck that was sold in via the dealer, they would have recived training and should eb able to help also.
If you ever need additional support, you can complete a quick technical support form at the bottom of the main combilift.com web site or direct link https://warranty.combilift.net/technical-support-form/. The form only asks for the minimal info so the team can quickly help you. There is no login required and no charge for this support. Anyone can request support for any age of truck.

Hope this helps

nice post BLey,
yes after i looked that unit up it is apparently electric.
so yes what you said about the steering wheel going to full stop would cause these issues too. And also if the battery is weak it may not have the power to turn the wheels to full stop and create this issue as well.
It looks a lot like a cube lift, very compact compared to the other C6000's i've worked on in the past.
It's been quite some time since i worked on one of these so my memory is a bit rusty on some of the specifics. :)

Like Swoop said it depends what mode of travel you have selected and would help if you can share more details of the problem, im assuming this is a steering issue snd not a drive issue.

Im also pretty sure since this is an ET unit its an electric truck using linear steer sensors encorporated inside the LF and Rear steer cylinders not prox switchs but I could be wrong. Check your stop bolts on the Rear and Front left wheels.

When in forward mode make sure the LF wheel is perfectly parrallel with the front leg and the tire is not toed in at all.

When in side mode make sure the rear wheel is perfectly parrallel with the back of the truck.

Any deviation will cause the sensor to not read correctly and give you mode change and steering issues, most likley cause would be the stop bolt has come loose not allowing said wheels to go to the fully locked positions.

Since your having an issue with the front I would segguest having a good look at the rear tire in particular.

If stop bolts are in adjustment and the wheels are sitting in the correct positions you may have a calibration issue and will need curtis software.

Low battery or battery issues can cause steer sensors to read incorrectly as well.

Umair,
it depends on what mode your travel direction is in.
front to rear travel, side mode travel and crab steer mode which lets you turn in a circle in place.
crab and side mode the wheels turn in the same direction
when your in normal travel mode (front to rear) both outrigger wheels do run opposing each other but because they are mounted opposite they turn in the same direction.
each wheel has a position sensor on them so the hydraulics will know how to divert the fluid to each motor so they will turn correct direction.

what mode is your steer/travel in?
i would check the sensors and make sure they are working. they have small orange led lights on them so when they are activated the light is on. They are magnetic so if something metal/steel gets in front of it they turn on.
I would start there...

Update:
after checking a bit i thought you may be needing to know where these sensors are located. In an older manual i looked at they are all located in the front left outrigger wheel, it shows 3 of them in different positions around the outside of the wheel linkage that turns the wheel to the different positions. You will also find 2 sensors on the rear steer wheel as well but i do believe your issue may be in the outrigger wheel on the left front. There should be a cover plate to access them.