Enhanced Testing

P0605 - Internal Control Module ROM Error






Function
A malfunction is detected by using a checksum technique for verifying data. The digital data is composed of zeros and ones. A checksum is the total of all ones in a string of data. By comparing the checksum value with a stored value, a malfunction can be detected.

DTC Description
The ECM monitors RAM areas and communication connections between microcontroller and output drivers and sets DTC P0605 if failure is detected. If same error code is set in the next driving cycle, the ECM will illuminate the MIL.


Detecting Condition