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CHECK Mode Diagnostic Trouble Code Retrieval Toyota MR2 W30

Engine Control System Self Diagnostics: Diagnosis ~260 words

CHECK Mode Diagnostic Trouble Code Retrieval

Note. If using Toyota hand-held tester, if ignition switch is turned from ON to ACC or OFF position during CHECK mode, all DTCs and freeze frame data will be erased from ECM. DO NOT switch from CHECK mode to NORMAL mode until all DTCs and freeze frame data are recorded.

  1. Ensure vehicle battery is fully charged. Apply parking brake. Shift transmission/transaxle into Neutral. Turn A/C and all accessories off. Ensure throttle valve is fully closed. Turn ignition off. Connect hand-held tester to Data Link Connector No. 3 (DLC3). see scheme 1 Turn ignition on and then turn hand-held tester on.
  2. Switch hand-held tester from NORMAL mode to CHECK mode. CHECK mode is operational if MIL on instrument cluster flashes. Start engine. If no DTCs are present, MIL will turn off. Try to simulate conditions of driveability complaint described by customer.
  3. Record any DTCs and freeze frame data displayed for system diagnosis. If driveability problem exists and no DTCs are present, go to «TROUBLESHOOTING - NO CODES»(ref-151977) article for diagnosis by symptom.
  4. If any DTCs are present, perform appropriate DTC test under «DIAGNOSTIC TESTS»(ref-151967-S16193086972003010900000). For DTC description, see «DIAGNOSTIC TROUBLE CODE DEFINITIONS»(ref-151967-S29770677432003010900000) under DIAGNOSTIC TROUBLE CODE DEFINITIONS. For information on freeze frame data, see «FREEZE FRAME DATA»(ref-151967-S32044846962003010900000). For information on two-trip detection logic DTCs, see «TWO-TRIP DETECTION LOGIC»(ref-151967-S42484599802003010900000).
  5. After repairs for DTC have been completed, DTC must be cleared from ECM memory. See «CLEARING DIAGNOSTIC TROUBLE CODES»(ref-151967-S08210266432003010900000). Road test vehicle to ensure all symptoms and/or complaints have been repaired.