Here is a photo of the obd connector on a 1993 Isuzu Trooper.
The connector is on the transmission hump about 6 inches from the accelerator pedal. It is inside a black hood. Right next to the white OBD connector is an identical green connector that I have not tested.
The OBD port is a white 3 hole plug. Right next to it in the photo is a green 3 hole plug that I believe is for automatic transmission diagnostics. The plug is different from other plugs under the dash as it will not accept a .25" tab connector.
The picture shows a 20 ohm resistor being used to short pin 1 and 3 of the white plug. The resistor is to prevent a melted wire in case the plug shorted is the wrong plug.
To read the error codes from the engine computer, the mechanic is supposed to short pin 1 and pin 3 of the OBD port plug. Then the mechanic turns on the ignition switch and counts flashes of the "check engine" light to determine the error values being reported.
It should be Right up under the Dash on the Left of the Steering Column.
SOURCE: obd port
OBD ports were mandated to always be on the drivers side near the steering column, on, or under the dashboard.
SOURCE: where is the obd connector
maybe on a hump in front of the console, on the drivers side and may be covered with carpet. Or near the drivers left foot rest and drivers door underneath some plastic.
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Does anyone know what OBD connector is needed for a 93 trooper and where I can buy one?
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