Reading Diagnostic Trouble Codes

1. Using the scan tool, change over the diagnostic test mode of the engine control module to DIAGNOSTIC TEST MODE (INCREASED SENSITIVITY).
2. Road test the vehicle.
3. Read the diagnostic trouble code(s) and repair the malfunctioning part.
4. Turn "OFF" the ignition switch once. Then turn it "ON" again.

NOTE: Turning "OFF" the ignition switch will cause the engine control module to changeover the diagnostic test module from the Diagnostic Test Mode II to the Diagnostic Test Mode I.

5. Erase the diagnostic trouble code.