Reading and Clearing Diagnostic Trouble Codes

OBTAINING DIAGNOSTIC TROUBLE CODES

BULB CHECK

Key on: Bulb illuminated until vehicle starts, as long as all once per trip (readiness) monitors completed. If monitors have not been completed, then: Key on: bulb check for about 5 to 8 seconds, lamp then flashes if once per trip (readiness) monitors have not been completed until vehicle is started, then MIL is extinguished.

OBTAINING DTC'S USING SCAN TOOL

1. Connect the scan tool to the data link (diagnostic) connector. This connector is located in the passenger compartment; at the lower edge of instrument panel; near the steering column.
2. Turn the ignition switch on and access the "Read Fault" screen.
3. Record all the DTC's and "freeze frame" information shown on the scan tool.
4. To erase DTC's, use the "Erase Trouble Code" data screen on the scan tool. Do not erase any DTC's until problems have been investigated and repairs have been performed.