P0606

DTC P0606 ECM/PCM PROCESSOR

MONITOR DESCRIPTION

DTC Detection Conditions:

Monitor Strategy:

Typical Enabling Conditions:

Typical Malfunction Thresholds:

The ECM continuously monitors its own internal circuits. This self-checking ensures that the ECM is functioning properly.

The two CPUs, main and sub, inside the ECM, perform continuous mutual monitoring. If the outputs from the two CPUs differ or deviate from the standard levels, the ECM determines that the internal circuits are malfunctioning. The ECM then illuminates the MIL and sets the DTC.

INSPECTION PROCEDURE

HINT: Read freeze frame data using a hand-held tester or OBD II scan tool. Freeze frame data record 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.

REPLACE ECM