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 P0605 if failure is detected.
Item | Detecting Condition | Possible cause |
DTC Strategy |
•
Controller malfunction check failur of controller operation | 1. Poor connection or damaged harness 2. Unstable Power 3. Faulty PCM |
Enable Conditions |
•
10V < Battery voltage > 16V
•
Sensor heater controller active | |
Threshold value |
•
Error bit information from H/W circuit | |
Diagnosis Time |
•
5 sec | |
MIL On Condition |
•
2 Driving Cycles |
