P0125

DTC P0125 - INSUFFICIENT COOLANT TEMPERATURE FOR CLOSED LOOP FUEL CONTROL

1. OUTLINE OF DIAGNOSIS
Detect the malfunction of engine coolant temperature sensor output property. Judge NG when the engine coolant temperature does not increase after engine starting in spite of the driving condition that it seems to increase.




2. ENABLE CONDITION

3. GENERAL DRIVING CYCLE
Always perform the diagnosis until the engine coolant temperature becomes 20 degree C (68 degree F) after starting engine with cooled condition or until NG is judged once.

4. DIAGNOSTIC METHOD




Judge NG when the malfunction criteria are completed. Judge OK and clear NG when the engine coolant temperature is more than 20 degree C (68 degree F) or more.

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

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

7. FAIL SAFE
Keep engine coolant temperature at 70 degree C (158 degree F).

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