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Home >> Toyota >> 2011 >> Tundra Base, 4.0 U >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (1GR-FE) (Diagnostic Codes P0418-P1605) >> SFI System >> DTC P0604: Internal Control Module Random Access Memory (RAM) Error >> Inspection Procedure
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Inspection Procedure

Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.