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 |
–
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 | |
Diagnostic Time |
–
5 sec. | |
MIL On Condition |
–
2 Driving Cycles |
