With Manufacturer's Scan Tool

If the MIL (Malfunction Indicator Lamp) has come on




1. Start the engine and check the MIL.




2. If the MIL stays on, connect the OBDII scan tool to the 16P Data Link Connector (B) located under the driver's side of the dashboard.
3. Turn the ignition switch ON (II).
4. Check the Diagnostic Trouble Code (DTC) and note it. Then also check the freeze frame data. Refer to the DTC Troubleshooting Index and begin the appropriate troubleshooting procedure.
Diagnostic Trouble Code Descriptions

NOTE:
- Freeze frame data indicates the engine conditions when the first malfunction, misfire or fuel trim malfunction was detected.
- The scan tool or tester can read the DTC, freeze frame data, current data, and other Engine Control Module (ECM)/ Powertrain Control Module (PCM) data.
- For specific operations, refer to the user's manual that came with the scan tool.

If the MIL did not come on
If the MIL did not come on but there is a driveablity problem, refer to the Symptom Troubleshooting index.
Symptom Related Diagnostic Procedures

If you can't duplicate the DTC
Some of the troubleshooting requires you to reset the ECM/PCM and try to duplicate the DTC. If the problem is intermittent and you can't duplicate the code, do not continue through the procedure. To do so will only result in confusion and, possibly, a needlessly replaced ECM/PCM.