Retrieving Diagnostic Trouble Codes
WARNING: This page is about a different car, the 2003 Toyota RAV4, 2002 Toyota RAV4, 2002 Toyota Highlander, 2001 Toyota RAV4, and 2001 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
DTCs are 4-digit. See DIAGNOSTIC TROUBLE CODE DEFINITIONS table. DTCs can only be retrieved using a TOYOTA scan tool or OBD-II scan tool that complies with SAE standard J-1987. Connect scan tool to 16-pin Data Link Connector (DLC3). DLC3 is located under instrument panel, near steering column. See Fig 1. When a DTC is stored in ECM, MIL on instrument panel will illuminate. To retrieve DTCs using OBD-II scan tool, follow scan tool manufacturer's operating instructions.
NOTE:
Scan tool may be operated in NORMAL mode when retrieving DTCs. Only the TOYOTA scan tool may be used in CHECK mode when retrieving DTCs.
NORMAL mode is used to retrieve DTCs from ECM. CHECK mode is used to check for DTCs when operating vehicle to simulate conditions in which DTC was set. CHECK mode contains a higher sensing ability to detect malfunction. CHECK mode helps determine malfunctions caused by poor electrical connections, which are difficult to determine using NORMAL mode.
NOTE:
If using TOYOTA scan tool, when ignition switch is turned from ON to ACC or OFF position, or if scan tool is switched from NORMAL mode to CHECK mode, all DTCs and freeze frame data will be erased. DO NOT switch modes until all DTCs and freeze frame data are recorded.
NOTE:
Once repairs have been performed, DTCs must be cleared from ECM memory. See CLEARING DIAGNOSTIC TROUBLE CODES .