LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2002 >> Corolla LE, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self-Diagnostics >> Self-Diagnostic System >> Retrieving Diagnostic Trouble Codes >> NORMAL Mode Code Retrieval
April 5, 2026: LEMON Manuals is launched! Read the announcement.

NORMAL Mode Code Retrieval

  1. Connect scan tool to Data Link Connector (DLC) No. 3. See Figure. Turn ignition on with engine off. Turn scan tool on. Using scan tool manufacturer's instructions, check for DTCs and freeze frame data.
  2. If scan tool displays UNABLE TO CONNECT TO VEHICLE, check DLC No. 3. See DATA LINK CONNECTOR NO. 3 INSPECTION  under SCAN TOOL PROBLEMS. If scan tool does not display UNABLE TO CONNECT TO VEHICLE, go to next step.
  3. Record any DTCs and freeze frame data displayed for system diagnosis. If driveability problem exists and no DTCs are present, go to TROUBLE SHOOTING - NO CODES article for diagnosis by symptom.
  4. If any DTCs are present, perform appropriate DTC test under DIAGNOSTIC TESTS. For DTC descriptions, see DIAGNOSTIC TROUBLE CODE DEFINITIONS  table under DIAGNOSTIC TROUBLE CODE DEFINITIONS. For more information on freeze frame data, see FREEZE FRAME DATA . For information on two-trip detection logic DTCs, see TWO-TRIP DETECTION LOGIC .
  5. After repairs have been completed, clear DTCs from ECM. See CLEARING DIAGNOSTIC TROUBLE CODES . Road test vehicle to ensure all symptoms and/or complaints have been repaired.
scientia non olet · About LEMON Manuals