950G WHEEL LOADER NOT MOVING FOWARD OR REVERSE

[Olori Joshua]

Please your help on why a 950G wheel loader sn:
5FW01259 not engaging forward or reverse gears. It was moving fine before. the operator packed it but later started it to work but it refuse to move in either direction. I went to monitor the status with CAT ET but find one xmsn active code
621- 3 Downshift Switch : Voltage Above Normal
can this be the reason it's not moving?
attached is all the active code monitored.

not started any troubleshooting yet.
thanks.

 

[Nige]

A fault in a downshift shift could easily result in a transmission not shifting.
Here's the diagnostic procedure fot it.

 

[Olori Joshua]

Th

A fault in a downshift shift could easily result in a transmission not shifting.
Here's the diagnostic procedure fot it.

Thanks sir. Will carry out this test tomorrow morning. Won't fail to give feed back.

 

[Olori Joshua]

A fault in a downshift shift could easily result in a transmission not shifting.
Here's the diagnostic procedure fot it.

Good morning. Your transmission shifter schematic is different from what I found with the sn number. With sis 2011B
The troubleshooting procedure is the same
Attached is it

 

[Olori Joshua]

A fault in a downshift shift could easily result in a transmission not shifting.
Here's the diagnostic procedure fot it.

problem solved. thanks for the assistance. the downshift switch was the cause. wire F784-YL and F781-BR were both opened to wire 202-BK from the switch. had to looped F781 to 202-BK at the switch so we could drive loader pending when we order for new switch.