Scanning the OBDII codes in a 1997 Jeep Cherokee can take the guesswork out of the repairs that the codes indicate are needed. OBD is an abbreviation for "On Board Diagnostics," and vehicles after 1995 were switched from OBDI to OBDII. The diagnostic codes in the Cherokee come from the engine as well as the transmission. The process of scanning the vehicle takes no longer than five minutes. The tool needed for this job can be purchased at an auto parts store.
Sit in the driver's seat of the vehicle. Insert the OBDII scan tool into the port. The port for the OBDII scan tool is located directly underneath the dash, below the steering wheel.
Turn the key to the "accessories" position. This is the position where all the dash lights come on, but the car does not start.
Turn the OBDII scan tool on. Press the "Read" button on the scanner, or select the "Read Codes" option if you have a digital scanner.
Write the codes down that the scanner provides you from your vehicle. Write down any additional information that the scanner gives you as well, such as a brief description of the location and problem.
