DTC P0117: Engine Coolant Temperature Circuit Low Input

Detect the open or short circuit of engine coolant temperature sensor.

Judge NG when out of the standard value.

Always perform the diagnosis continuously.

Judge NG when the continuous time of completing the malfunction criteria below becomes more than 0.5 seconds. Judge OK and clear the NG when the malfunction criteria below are not completed.

Judgment Value 

Time Needed for Diagnosis:  0.5 seconds

Malfunction Indicator Light Illumination:  Illuminates as soon as the malfunction occurs.

• When the OK idling cycle was completed 40 times in a row
• When "Clear Memory" was performed

• When the OK driving cycle was completed 3 times in a row
• When "Clear Memory" was performed

• Engine coolant temperature process: Fix the engine coolant temperature at 70°C (158°F).
• ISC feedback: Calculate the target engine speed setting the engine coolant temperature to 70°C (158°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 coolant temperature: Increase normally occurs with high temperature and other conditions; however, occurs with other conditions except 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.

Memorize the freeze frame data. (For test mode $02)