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 PCM monitors RAM areas and communication connections between microcontroller and output drivers and sets DTC P0606 if failure is detected.
Item | Detecting Condition | Possible Cause | |
DTC Strategy |
•
Check failure of controller operation | 1. Poor connection or damaged harness 2. Unstable Power 3. Faulty PCM | |
Enable Conditions |
•
10V < Battery voltage > 16V | ||
Threshold Value | Case1 |
•
Internal processor error for 60 sec. after ignition ON | |
Case2 |
•
Communication between inner controller error for 2 times | ||
Diagnostic Time | Case1 |
•
Approx. 60 Seconds | |
Case2 |
•
Approx. 1 Seconds | ||
MIL On Condition |
•
2 Drive Cycles | ||
