P0117
DTC P0117 ENGINE COOLANT TEMPERATURE CIRCUIT LOW INPUT1. OUTLINE OF DIAGNOSIS
Detect the open or short circuit of engine coolant temperature sensor. Judge NG when out of the standard value.
2. COMPONENT DESCRIPTION
3. ENABLE CONDITION
4. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
5. DIAGNOSTIC METHOD
Judge NG when the continuous time of completing the malfunction criteria becomes more than 0.5 seconds. Judge OK and clear the NG when the malfunction criteria are not completed.
6. DTC CLEAR CONDITION
- When the OK idling cycle was completed 40 times in a row
- When "Clear Memory" was performed
7. MALFUNCTION INDICATOR LIGHT CLEAR CONDITION
- When the OK driving cycle was completed 3 times in a row
- When "Clear Memory" was performed
8. FAIL SAFE
- Engine coolant temperature process: Fix the engine coolant temperature at 70 degree C (158 degree F).
- ISC feedback: Calculate the target engine speed setting the engine coolant temperature to 70 degree C (158 degree F).
- ISC learning: Not allowed to learn.
- Heavy fuel judgment control: Not allowed to carry out the heavy judgment.
- Air conditioner control: Not allowed to turn the air conditioner to ON.
- Radiator fan control: Both main and sub fan are in High driving.
- Increase compensation factor at high engine coolant temperature: Increase normally occurs with high temperature and other conditions; however, occurs with other conditions except engine coolant temperature condition.
- AVCS control: Make the oil flow control valve driving output to be Duty=0%.
- Tumble generator valve control: Open the tumble generator valve.
9. ECM OPERATION AT DTC SETTING
Memorize the freeze frame data. (For test mode $02)