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DTC and MI Detection Logic When a malfunction is detected, the malfunction (DTC) is stored in the ECM memory. Diagnostic Trouble Code (DTC) HOW TO READ DTC The DTC can be read by the following methods. Without CONSULT-II ECM displays the DTC by a set of four digit numbers with MI illumination in the diagnostic test mode II (Self- With CONSULT-II CONSULT-II displays the DTC in “SELF-DIAG RESULTS” mode. Examples: “CRANK POS SEN (TDC)”, etc. I Output of the trouble code means that the indicated circuit has a malfunction. However, in the Mode HOW TO ERASE DTC How to erase DTC ( With CONSULT-II) 1. If the ignition switch stays “ON” after repair work, be sure to turn ignition switch “OFF” once. Wait at least 5 seconds and then turn it “ON” (engine stopped) again. 2. Touch “ENGINE”. The emission related diagnostic information in the ECM can be erased by selecting “ERASE” in the “SELF- How to erase DTC ( Without CONSULT-II) 1. If the ignition switch stays “ON” after repair work, be sure to turn ignition switch “OFF” once. Wait at least 5 seconds and then turn it “ON” (engine stopped) again. 2. Change the diagnostic test mode from Mode II to Mode I by using the data link connector. (See EC-36.) SEF371Y ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION ZD30DDTi EC-33 |