P0126

DTC P0126 INSUFFICIENT COOLANT TEMPERATURE FOR STABLE OPERATION

1. OUTLINE OF DIAGNOSIS
Detect the malfunction of engine coolant temperature sensor characteristics.
The engine coolant temperature and fuel temperature is stored in memory from the last time that the engine was stopped. If the engine coolant temperature does not decrease when it is expected to after starting the engine, it is judged to be NG.




2. COMPONENT DESCRIPTION




3. ENABLE CONDITIONS

4. GENERAL DRIVING CYCLE
Perform the diagnosis only once after starting the engine.

5. DIAGNOSTIC METHOD




Abnormality Judgment
Judge as NG if the continuous time when the given conditions are established is higher than 2.5 seconds.




Normality Judgment
When the given conditions are established, it is OK.

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

7. MALFUNCTION INDICATOR LIGHT CLEAR CONDITIONS
- When the OK driving cycle is completed 3 times in a row
- When "Clear Memory" is performed

8. FAIL SAFE
None

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