ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION — Emission-related Diagnostic Information (Cont'd); Malfunction Indicator (MI); OBD System Operation Chart

CG10, CGA3

6) Test values — Heated oxygen sensor test results 7) Distance traveled while MI is activated 8) Others

Actual work procedures are explained using a DTC as an example. Be careful so that not only the DTC, but all of the data listed above, are cleared from the ECM memory during work procedures.

The MI is located on the instrument panel.

- When a malfunction is detected for the first time, the 1st trip DTC and the 1st trip freeze frame data are stored in the ECM memory. - When the same malfunction is detected in two consecutive trips, the DTC and the freeze frame data are stored in the ECM memory, and the MI will come on. For details, refer to "Two Trip Detection Logic" on EC-7028. - The MI will go off after the vehicle is driven 3 times with no malfunction. The drive is counted only when the recorded driving pattern is met (as stored in the ECM). If another malfunction occurs while counting, the counter will reset. - The DTC and the freeze frame data will be stored until the vehicle is driven 40 times (driving pattern A) without the same malfunction recurring (except for Misfire and Fuel Injection System). The "TIME" in "SELF-DIAGNOSTIC RESULTS" mode of CONSULT-II will count the number of times the vehicle is driven. - The 1st trip DTC is not displayed when the self-diagnosis results in "OK" for the 2nd trip.