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Home >> Lexus >> 2007 >> SC 430 >> Repair and Diagnosis >> Engine Performance >> Engine Control System >> SFI System >> DTC P0604 Random Access Memory (RAM) >> Inspection Procedure

Inspection Procedure

  1. CHECK DTC 
    1. Clear DTC.
    2. Turn the ignition switch OFF.
    3. Disconnect the cable from the negative battery terminal and wait for 1 minute.
    4. Connect the cable to the negative battery terminal.
    5. Turn the ignition switch ON.
    6. Check DTC.

      OK: 

      P0604 is not present. 

    NG: REPLACE ECM 

    OK: INTERMITTENT PROBLEMS 

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