Engine Coolant Temperature (Ect) Sensor Removal/Installation; Engine Coolant Temperature (Ect) Sensor Inspection - Mazda Mazda6 Workshop Manual Supplement

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.
1. Disconnect the negative battery cable.
2. Drain the engine coolant. (See
3. Remove the common rail. (See
4. Remove in the order indicated in the table.
1 ECT sensor
2 Gasket
5. Install in the reverse order of removal.
End Of Sie

ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION

Note
• Perform the following test only when directed.
Resistance Inspection
1. Place the ECT sensor in water with a thermometer, and heat the water gradually.
2. Measure the resistance between the ECT sensor
terminals using an ohmmeter.
• If not as specified, replace the ECT sensor.
Specification
Water temperature (°C {°F})
20 {68}
80 {176}
Circuit Open/Short Inspection
1. Inspect for open/short circuit in the following
wiring harnesses.
• If there is open/short circuit, repair or replace
wiring harness.
Open circuit
• Signal circuit
— ECT sensor terminal A and PCM terminal 87
• GND circuit
— ECT sensor terminal B and PCM terminal 91
Short circuit
• Signal circuit
— ECT sensor terminal A and PCM terminal 87 to power circuit
— ECT sensor terminal A and PCM terminal 87 to GND
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F2–76
CONTROL SYSTEM
D–8 ENGINE OIL REPLACEMENT.)
F2–53 SUPPLY PUMP
Resistance (kilohm)
2.21—2.69
0.29—0.34
REMOVAL/INSTALLATION.)
49 D015 001
A6E404018840201
16—23
{1.6—2.4, 12—17}
N·m {kgf·m, ft·lbf}
R
A6E40702045
A6E404018840202
B A
A6E40702046