P0864 (U5/Low Emissions)

DTC P0864 - TCM COMMUNICATION CIRCUIT RANGE/PERFORMANCE

OUTLINE OF DIAGNOSIS
Detect malfunction of communication of AT diagnosis.
Judge NG when communication format is disagreement.




ENABLE CONDITION

GENERAL DRIVING CYCLE
Perform diagnosis after starting.

DIAGNOSTIC METHOD




Judge NG when the continuous time of completing the malfunction criteria becomes more than the time needed for diagnosis (60 seconds). Judge OK and clear NG when receiving normal data.

DTC CLEAR CONDITION
- When the OK idling cycle was completed 40 times in a row
- When "Clear Memory" was performed

MALFUNCTION INDICATOR LIGHT CLEAR CONDITION
- When the OK driving cycle was completed 3 times in a row
- When "Clear Memory" was performed

FAIL SAFE
None

ECM OPERATION AT DTC SETTING
Memorize the freeze frame data. (For test mode $02)