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Inspection Procedure

WARNING: This page is about a different car, the 2007 Lexus ES 350. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK FOR WATER DAMAGE 
    1. Check the main body ECU, peripheral components, and wire harnesses for traces of water.

      OK: There are no traces of water. 

    NG: TAKE APPROPRIATE MEASURES AGAINST CAUSE OF WATER DAMAGE AND REPLACE MAIN BODY ECU 

    OK: Go to Next Step 

  2. CHECK DTC OUTPUT 
    1. Delete the DTCs (See DTC CHECK / CLEAR  ).

      HINT:

      After all DTCs are cleared, check if the trouble occurs again 30 seconds after the engine switch is turned on (IG).

    2. Check for DTCs again.

      OK: No DTC is output. 

    NG: REPLACE MAIN BODY ECU 

    OK: END