P1312

DTC P1312 - EXHAUST GAS TEMPERATURE SENSOR MALFUNCTION

OUTLINE OF DIAGNOSIS
Detect the malfunction of exhaust temperature sensor output property.
Judge NG when the exhaust temperature remains high or low whereas it seemed to vary from the viewpoint of driving condition.




ENABLE CONDITION

GENERAL DRIVING CYCLE
Perform the diagnosis continuously at more than 2400 rpm in 240 seconds and more after starting the engine in cool condition.
Pay attention to the coolant temperature at engine starting.

DIAGNOSTIC METHOD




Judge NG when one of the malfunction criteria is completed, and judge OK and clear the NG when all of the malfunction criteria are not completed.

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)