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: If battery voltage is low, diagnostic trouble codes may not be output. Be sure to check the battery and charging system before continuing.

CAUTION: If the battery is disconnected or if the powertrain control module connector is disconnected, the diagnostic trouble code memory will be erased. Do not disconnect the battery or powertrain control module until after the diagnostic trouble codes are recorded.

CAUTION: Turn the ignition switch off before connecting or disconnecting the scan tool.

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. Turn off the ignition switch.
5. Check that the diagnostic trouble code is normal.




DIAGNOSTIC BY DIAGNOSTIC TEST MODE II (INCREASED SENSITIVITY)
When choosing Scan tool Mode II, at the time the PCM first detects the breakdown, and when the "service engine soon lamp" illuminates (only in the case of emission-associated breakdown), the corresponding Diagnostic Trouble Codes are memorized.

For Comprehensive Component Electrical Faults (Opens/Shorts), the time that elapses between the the breakdown occurrence and DTC memorization is shortened (from four seconds to one second).

This enables a reduction of the work associated with confirming the breakdown status and confirming completion following repairs.

To return to the usual Mode I from Mode II selection, turn the ignition to the OFF position or reselect Scan tool Mode I.

When returning to Mode I, DTC, Readiness Test Status and Freeze Frame Data will be erased. Make note of these before returning to Mode I.

1. Using the scan tool, change over the diagnostic test mode of the powertrain 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 powertrain control module to changeover the PCM from the diagnostic test mode II to the diagnostic test mode I.