How do you test a Honda ECT sensor?
Ohmmeter-Testing
- Start with a cold engine.
- Attach an ohmmeter across the sensor’s terminals.
- Measure the sensor’s resistance and record the reading.
- Reconnect the sensor wiring connector.
- Start and run the engine for two minutes, then shut the engine off.
How do you change the ECT sensor on a Honda?
Changing the ECT sensor was as easy as removing a bolt but requiring a pan ready to pick up the coolant spills upon removal and having a bottle of more coolant ready for refill.
Where are the sensors on a Honda Accord?
Fuel Tank Pressure Sensor Air Temperature Sensor ( Ambient / Intake 1 Manifold Pressure/Vacuum Sensor Power Steering Pressure Switch Throttle Position Sensor Transmission Position Sensor/Switch Variable Valve Timing Actuator Position Sensor Variable Valve Timing Pressure Switch Camshaft Position Sensor Crankshaft Position Sensor
What happens to ECT sensor 2 when coolant is high?
As the engine coolant warms, the sensor resistance decreases, and the PCM detects a low ECT2 signal voltage. If the ECT sensor 2 output voltage is less than a set value when the engine coolant temperature is high, the PCM detects a malfunction and a DTC is stored.
How much does an ECT sensor 2 cost?
Most auto repairs shops charge between $75 and $150 per hour. Engine Coolant Temperature (ECT) sensor 2 is a thermistor attached to the radiator. The Powertrain Control Module (PCM) applies voltage (about 5 V) to the ECT2 signal circuit through a pull up resistor.
Changing the ECT sensor was as easy as removing a bolt but requiring a pan ready to pick up the coolant spills upon removal and having a bottle of more coolant ready for refill.
Where is the coolant temperature sensor located in the engine?
Typically, the coolant temperature sensor is mounted in the engine block or cylinder head, near the thermostat or where the coolant flow is hottest. More than one coolant temperature sensor may be used on some systems to determine the temperature in different locations.
When to replace the coolant temp sensor in a Honda?
If the reading is within reasonable limits, then the ECT sensor is producing good resistance for such temperature. If not, then the ECT sensor needs to be replaced. 4. Reconnect the ECT sensor and start the ignition.
What happens if your ECT sensor is bad?
Once the car is warm, it switches to relying on the oxygen sensors for a more precise reading. A failed ECT sensor can prevent this change from happening, resulting in a rich-running engine and poor fuel economy. 4. Your engine runs poorly: The sensor affects almost every aspect of engine management.