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Home >> Toyota >> 2009 >> Camry Hybrid >> Repair and Diagnosis >> Engine Performance >> Engine Control System (Hybrid) >> Initialization >> DTC P0604 Internal Control Module Random Access Memory (RAM) Error >> Inspection Procedure

Inspection Procedure

  1. CHECK OTHER DTC OUTPUT (IN ADDITION TO DTC P0604) 
    1. Connect Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Turn the tester on.
    4. Clear the DTC.
    5. Turn the power switch off.
    6. Disconnect the battery negative terminal and wait for 1 minute.
    7. Connect the battery negative terminal.
    8. Turn the power switch on (IG).
    9. Enter the following menus: Powertrain / Engine / Trouble Code.
    10. Read the DTCs.

    Result 

    RESULT CHART

    Display (DTC output) Proceed to
    P0604 A
    No output DTC B

    B: CHECK FOR INTERMITTENT PROBLEMS 

    A: REPLACE HYBRID VEHICLE CONTROL ECU 

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