On-Board Diagnostic (OBD) test mode
- The OBD system detects malfunction in the exhaust gas purification system and evaporative gas leakage of the vehicle itself, and it records that malfunction content.
- Diagnosis related to the OBD system can be facilitated using the OBD test mode.
Mode 1: On-Board system readiness test
- In Mode 1, the completion status of the PID/data monitor related to the exhaust gas purification system and related system monitors can be verified.
- The system monitor verifies whether the operation condition such as for misfire, fuel, CCM, catalyst, evaporative gas, HO2S, and HO2S heater is operating normally.
Mode 2: Freeze frame data
- Mode 2 reads out the freeze frame data.
- The M-MDS displays the freeze frame data automatically when the CMDTCs are displayed.
Mode 3: Exhaust gas purification system related CMDTC
- Mode 3 reads out the CMDTCs related to the exhaust gas purification system.
- When a quick check is performed, the M-MDS automatically reads out the CMDTCs related to the exhaust gas purification system.
Mode 4: Exhaust gas purification system-related malfunction information deletion/reset
- Mode 4 deletes/resets information (such as CMDTC, pending code, and freeze frame data) related to the exhaust gas purification system.
- When the DTCs are cleared, the M-MDS automatically deletes/resets the information related to the exhaust gas purification system.
Mode 5: HO2S monitor test
- Mode 5 reads out the results of HO2S monitor test.
- The M-MDS does not support because it substitutes for Mode 6.
Mode 6: Diagnostic monitoring test
- Mode 6 reads out the results (number of misfires of each cylinder) of each system monitor test.
Mode 7: Pending code
- Mode 7 reads out the pending codes.
- When a self-test is performed, the M-MDS automatically reads out the pending codes.
Mode 8: Force drive
- Mode 8 performs force drive.
- The M-MDS is used only for forcibly driving the valve for the outlet opening to atmosphere of the charcoal canister to check for fuel evaporative gas leakage.
Mode 9: Vehicle information read out
- Mode 9 reads out information such as the vehicle identification number and calibration ID number.