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Home >> Lexus >> 2008 >> GS 350 AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - SFI System Precaution, Troubleshooting Introduction, Symptoms Table & Diagnostic Trouble Code Chart >> SFI System >> DTC Check/Clear
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DTC Check/Clear

NOTE: When the diagnosis system is changed from the normal mode to check mode or vice versa, all DTCs and freeze frame data recorded in normal mode are erased. Before changing modes, always check and make a note of DTCs and freeze frame data.

HINT:

  1. CHECK DTC (Using the Techstream) 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the Techstream on.
    4. Select the following menu items: Powertrain/Engine and ECT/Trouble Codes.
    5. Check the DTC (s) and freeze frame data, and then write them down.
    6. Check the details of the DTC (s) (See DIAGNOSTIC TROUBLE CODE CHART  ).
  2. CLEAR DTC (Using the Techstream) 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the Techstream on.
    4. Select the following menu items: Powertrain/Engine and ECT/Trouble Codes.
    5. Press the YES button.
  3. CLEAR DTC (Without using the Techstream) 
    1. Perform either one of the following operations:
      1. Disconnect the negative battery cable for more than 1 minute.
      2. Remove the EFI and ETCS fuses from the No. 2 engine room relay block, junction block located inside the engine compartment for more than 1 minute.