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INSPECTION PROCEDURE 1 CHECK DTC a Clear DTC (See DTC CHECK/CLEAR ) b Turn the ignition switch off c Disconnect the cable from the negative (-) battery terminal and wait for 1 minute d Connect the cable to the negative (-) battery terminal e Turn the ignition switch to ON f Check DTC OK: P0604 is not present. NG: REPLACE ECM (See REMOVAL ) OK: CHECK FOR INTERMITTENT PROBLEMS (See CHECK FOR INTERMITTENT DTC P0606 ECM/PCM PROCESSOR DESCRIPTION The ECM continuously monitors its main and sub CPUs This self-check ensures that the ECM is functioning DTC DETECTION CONDITION AND TROUBLE AREA REFERENCE CHART MONITOR STRATEGY MONITOR STRATEGY DTC DTC Detection Condition Trouble Area P0606 When either condition below is ECM main CPU error ECM sub CPU error ECM Related DTC P0606: ECM range check Required sensors/Components (main) ECM Required sensors/Components (sub) - Frequency of Operation Continuous Duration Within 1 second MIL Operation Immediate
2009 Toyota Tundra 2009 ENG NE PERFORMANCE Engine Control System (3UR-FBE) - Tundra
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