OBD II Codes

What does the Engine Light Means?

With Consult

1. Turn ignition Off.
2. Connect ??Consult?? the data link connector (DLC), located behind fuse box cover.
3. Turn ignition On.
4. Touch ??Start.??
5. Touch ??Engine.??
6. Perform each diagnostic test mode according to each service procedure.

Without Consult

1. Turn ignition On.
2. Turn diagnostic mode selector on ECU fully clockwise and wait until inspection lamps flash. Number of flashes displayed indicates corresponding mode.
3. Note number of flashes, then immediately turn diagnostic mode selector fully counterclockwise.
4. If ignition is turned Off during diagnosis, in each mode, and then turned back on again after power to the ECU has dropped off completely, diagnosis will automatically return to Mode I.
5. For description of modes, proceed as follows:
   1. (Mode I): with engine stopped, system in bulb check state. with engine running, system in malfunction warning state.
   2. (Mode II): with engine stopped, system in self diagnostic results state. with engine running, system in front O2S monitor state.

Clearing Codes

If using a scan tool, follow tool manufacturer?s instructions to clear Codes.

Using a small screwdriver to turn the diagnostic mode selector switch, located on the side of the ECM/ECU, fully clockwise. After waiting two seconds, rotate the switch to the full counterclockwise position. The diagnosis will end and memory will then be cleared.