P0866

DTC P0866 - TCM COMMUNICATION CIRCUIT HIGH

OUTLINE OF DIAGNOSIS
- Detect the open/short circuit of AT diagnosis line.
- Judge NG when the signal remains High.




ENABLE CONDITION

GENERAL DRIVING CYCLE
Perform the diagnosis continuously after starting the engine.

DIAGNOSTIC METHOD




Judge NG when the malfunction criteria are completed. Judge OK and clear the NG when the signal is turned over.

DTC CLEAR CONDITION
- When the OK idling cycle is 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)