Passo is either AWD or 2WD
First check whether your car is 2WD version or AWD one..
If it’s AWD then the car will always be in AWD mode you cannot switch it.
To check,
if chassis code is KGC30 , it’s 2WD
if chassis code is KGC35 , it’s AWD
ABS pump (module) will be under the hood if it has ABS. I believe all passos have ABS.