Component Location
General Description
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.
DTC Description
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.)
DTC Detecting Condition
Item | Detecting Condition | Possible Cause |
DTC Strategy | ROM checksum error
| ROM data reprogram illegally
PCM/TCM
|
Enable Conditions | Ignition "ON"
Battery voltage > 10V
|
Threshold value | Checksum error or PCM/TCM fault
|
Detecting Time | 1event
|
Fail safe | Locked into 4th gear
|