It doesn't have OBDII, I think that's why you can't find it. You can check the code by turning the key on and off 3 times within 5 seconds. The code will flash at you using the "check engine light". Long pauses in between indicate flashes seperates the different codes.
Under the dash on the driver side.
It is under the dash on the driver side.
I assume you have an electronic controled transmission. OBD II Code: P0755-----Shift Solenoid "B" Malfunction. Jim
The obd 1 port is next to the battery
OBD 0
OBD 1
Should be OBD I, OBD II is 1996 and newer
the 2-4 solenoid is located in the solenoid pack on the front of the transmission. It is the unit with the big pug in just below the cooler hoses on the transmission.
Some states test cars for pollution compliance by connecting a reader to the vehicle's OBD-II port. Your 1990 Corolla is exempt from OBD-II testing because you don't have an OBD-II port - they first came out in 2006.
There are 2 lights. One is a check engine light which means the emmisions system needs service and there is a problem with the OBD system. Another light is a service light which just means you need to change the oil. Your owners manual will tell you which is which.
A 1990 Ford Ranger is OBD I / EEC IV - if that's what you are asking
My 1990 Stanza has the fuse listing inside the cover of the fuse box.