How to Display and Read Diagnostic Trouble Codes

1. Disconnect and isolate the battery negative cable.

WARNING: DISCONNECT AND ISOLATE THE BATTERY NEGATIVE CABLE BEFORE BEGINNING AIR- BAG SYSTEM COMPONENT SERVICE PROCEDURES. THIS WILL DISABLE THE AIRBAG SYSTEM. FAILURE TO DISCONNECT THE BATTERY COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY. ALLOW SYSTEM CAPACITOR TO DISCHARGE FOR TWO MINUTES BEFORE REMOVING AIRBAG COMPONENTS.

2. Connect scan tool (DRB) to Data Link connector, located at left side of the steering column and at the lower edge of the lower instrument panel.
3. Turn the ignition key to ON position. Exit vehicle with scan tool. Use the latest version of the proper cartridge.
4. After checking that no one is inside the vehicle, connect the battery negative terminal.
5. Using the scan tool, read and record active diagnostic code data.
6. Read and record any stored diagnostic codes.
7. Refer to the proper Body Diagnostic Procedures if any diagnostic codes are found in Step 5 or Step 6.
8. Erase stored diagnostic codes if there are no active diagnostic codes. If problems remain, diagnostic codes will not erase. Refer to Air Bag Systems to diagnose the problem. If airbag warning lamp either fails to light, or goes on and stays on, there is a system malfunction.