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.
The ECM monitors RAM areas and communication connections between microcontroller and output drivers and sets DTC P0605 if failure is detected.
ITEM | DETECTING CONDITION | POSSIBLE CAUSE |
DTC Strategy | ● Check RAM Area / Communication connections | ● Contact resistance in connectors ● Faulty ECM |
Enable Conditions | ● Ignition ON | |
Threshold Value | ● Internal check | |
Diagnostic Time | ● 0.1 sec. |
