PCM/TCM decide that error is detected, when checksum is worng by PCM/TCM internal operation.
PCM/TCM watch that PCM/TCM checks error of each data by each data checksum for PCM/TCM internal operation value.
This code is set when PCM/TCM detected checksum error by internal operation.
( Checksum error is detected when PCM/TCM's ROM or DATA is changed by reprogram illegally.)
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
ROM checksum error |
•
ROM data reprogram illegally
•
PCM/TCM
•
Battery (-) Cable poor connection |
Enable Conditions |
•
Ignition "ON"
•
Battery voltage > 10V | |
Threshold value |
•
Checksum error or PCM/TCM fault | |
Detecting Time |
•
1event | |
Fail safe |
•
Locked into 4th gear |
