Reading Diagnostic Trouble Codes

NOTE: This is the only information provided by the manufacturer for reading trouble codes for this system.

HOW TO READ AND ERASE DIAGNOSTIC TROUBLE CODES

CAUTION:
1. If battery voltage is low, diagnostic trouble codes may not be output. Be sure to check the battery and charging system before continuing.
2. If the battery is disconnected or if the engine control module connector is disconnected, the diagnostic trouble code memory will be erased. Do not disconnect the battery or engine control module until after the diagnostic trouble codes are recorded.
3. Turn the ignition switch off before connecting or disconnecting the scan tool.

NOTE: If a DTC is erased, its "freeze frame" data will be also erased and the readiness test status will be reset. If necessary, take a note of the "freeze frame" data before erasing the DTC.




1. Connect the scan tool to the data link connector, and read the diagnostic trouble codes.
2. Repair the malfunction while referring to the INSPECTION CHART FOR DIAGNOSTIC TROUBLE CODES.
3. Turn the ignition switch to OFF and then back to ON again.
4. Erase the diagnostic trouble codes using the scan tool.
5. Confirm that the diagnostic trouble code reading show is normal.

DIAGNOSTIC BY DIAGNOSTIC TEST MODE II (INCREASED SENSITIVITY)
When mode II is selected with MUT-II, the Service Engine Soon/Malfunction Indicator Lamp will light when the ECM first detects the trouble. (Note that this is only for engine related trouble.) At the same time, the relevant diagnostic trouble codes will be registered

In respect to the comprehensive component electrical faults (opens/shorts), the time for the DTC to be registered after the fault occurrence is shortened (4 sec. -> 1 sec.)

With this, the confirmation of the trouble symptom and the confirmation after completing repairs can be reduced.

To return to the normal mode I after mode II has been selected once, the ignition switch must be turned OFF once or mode I must be reselected with the MUT-II. The DTC, readiness test status and freeze frame data, etc., will be erased when mode I is returned to, so record these if necessary.
1. Using the scan tool, changeover the diagnostic test mode of the engine control module to DIAGNOSTIC TEST MODE II. (INCREASED SENSITIVITY)
2. Road test the vehicle.
3. Read the diagnostic trouble code in the same manner as "READ OUT OF DIAGNOSTIC TROUBLE CODE" and repair the malfunctioning part.
4. Turn OFF the ignition switch.

NOTE: Turning OFF the ignition switch will cause the ECM to changeover from the diagnostic test mode II to the diagnostic test mode I.