CYLINDER HEAD TEMPERATURE (CHT) SENSOR INSPECTION [MZI-3.7]

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Note
•  Do not reuse the CHT sensor, install a new sensor.

Resistance Inspection

1.  Disconnect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [MZI-3.7].)

2.  Disconnect the CHT sensor connector. (See CYLINDER HEAD TEMPERATURE (CHT) SENSOR REMOVAL/INSTALLATION [MZI-3.7].)

3.  Measure the resistance between CHT sensor terminals A and B.

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•  If it is not within the specification, replace the CHT sensor. (See CYLINDER HEAD TEMPERATURE (CHT) SENSOR REMOVAL/INSTALLATION [MZI-3.7].)

CHT sensor resistance

CHT (°C {°F})

Resistance (kilohm)
20 {68}
Approx. 37.387
80 {176}
Approx. 3.775

CHT sensor characteristics graph (reference)

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