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

•

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

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