Mazda 2: Engine Coolant Temperature (ECT) Sensor
ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION
WARNING:
- When the engine is hot, it can badly burn. Turn off the engine and wait until it is cool before removing the ECT sensor.
ECT Sensor No.1 Removal/Installation
1. Disconnect the negative battery cable.
2. Drain the engine coolant. (See ENGINE COOLANT REPLACEMENT).
3. Remove the battery. (See BATTERY REMOVAL/INSTALLATION).
4. Disconnect the ECT sensor No.1 connector.
5. Remove the ECT sensor No.1 using the SST.
6. Install in the reverse order of removal.
7. Refill the engine coolant. (See ENGINE COOLANT REPLACEMENT).
ECT Sensor No.2 Removal/Installation
1. Disconnect the negative battery cable.
2. Drain the engine coolant. (See ENGINE COOLANT REPLACEMENT).
3. Disconnect the ECT sensor No.2 connector.
4. Remove the ECT sensor No.2 using the SST.
5. Install in the reverse order of removal.
6. Refill the engine coolant. (See ENGINE COOLANT REPLACEMENT).
ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION
WARNING:
- When the engine is hot, it can badly burn. Turn off the engine and wait until it is cool before removing the ECT sensor.
ECT Sensor No.1 Inspection
1. Disconnect the negative battery cable.
2. Drain the engine coolant. (See COOLING SYSTEM SERVICE WARNINGS).
3. Remove the battery. (See BATTERY REMOVAL/INSTALLATION).
4. Disconnect the ECT sensor No.1 connector.
5. Remove the ECT sensor No.1. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION).
6. Place the ECT sensor No.1 in water with a thermometer, and heat the water gradually.
7. Measure the resistance between the ECT sensor No.1 terminals using an ohmmeter.
- If not as specified, replace the ECT sensor No.1.
(See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION).
ECT sensor No.1 specification
ECT Sensor No.2 Inspection
1. Disconnect the negative battery cable.
2. Drain the engine coolant. (See COOLING SYSTEM SERVICE WARNINGS).
3. Disconnect the ECT sensor No.2 connector.
4. Remove the ECT sensor No.2. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION).
5. Place the ECT sensor No.2 in water with a thermometer, and heat the water gradually.
6. Measure the resistance between the ECT sensor No.2 terminals using an ohmmeter.
- If not as specified, replace the ECT sensor No.2.
(See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION).
ECT sensor No.2 specification
READ NEXT:
Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor
MASS AIR FLOW (MAF)/INTAKE AIR TEMPERATURE (IAT) SENSOR
REMOVAL/INSTALLATION
CAUTION:
Neither the MAF nor the IAT sensor cannot be removed as a single unit.
When
replacing the MAF or IAT sensor,
Manifold Absolute Pressure (MAP) Sensor
MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR REMOVAL/INSTALLATION
1. Disconnect the negative battery cable.
2. Remove the fresh-air duct and the air cleaner as a single unit. (See
INTAKE-AIR SYSTEM REMOV
Air Fuel Ratio (A/F) Sensor
AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION
WARNING:
A hot engine and exhaust system can cause severe burns. Turn off the
engine and wait
until they are cool before removing the exhaust syst
SEE MORE:
DTC U0300:00/U2100:00
System Malfunction Location
Detection Condition
WARNING:
Detection conditions are for understanding the DTC outline before
performing an
inspection. Performing an inspection according to only the detection
conditions may
cause injury due to an operating error, or damage the system. When
p
Fuel Tank
FUEL TANK REMOVAL/INSTALLATION
WARNING:
Repairing a fuel tank containing fuel is dangerous. Explosion or fire
may cause death or serious
injury. Always properly steam clean a fuel tank before repairing it.
Fuel line spills and leakage are dangerous. Fuel can ignite and cause
serious injuries
