Mazda CX-5 Service & Repair Manual: Engine Coolant Temperature (ECT) Sensor

Mazda CX-5 Service & Repair Manual / Engine / Cooling / Engine Coolant Temperature (ECT) Sensor

Purpose/Function

Detects the ECT as basic information for mainly determining the fuel injection amount.
Detects the ECT and inputs it to the PCM as an ECT signal.
The ECT sensor No.2 is only used for OBD.

Construction

ECT sensor No.1

Installed to the water outlet case.
A thermistor has been adopted as the detecting element for detecting the ECT.

ECT sensor No.2

Installed on the water pipe.
A thermistor has been adopted as the detecting element for detecting the ECT.

Operation

Inputs the signal, which fluctuates according to the ECT, to the PCM.

ECT sensor characteristic

Fail-safe

ECT sensor No.1


DTC No.	Fail-safe function
P0117:00	Fixes the water temperature for the engine control at 40 °C {104 °F}, and for the idle air control at 80 °C {176 °F}. Operates the cooling fan (high speed rotation). Inhibits the fuel cut control during shift change.
P0118:00	Fixes the water temperature for the engine control at 40 °C {104 °F}, and for the idle air control at 80 °C {176 °F}. Operates the cooling fan (high speed rotation). Inhibits the fuel cut control during shift change.

ECT sensor No.2

Function not equipped.

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 1. Disconnect the negative battery c ...

Fan Switch Inspection [Manual Air Conditioner]

1. Disconnect the negative battery cable.. 2. Remove the following parts: a. Shift lever knob (MTX). b. Glove compartment. c. Front console box. d. Shift panel. e. Upper panel. f. Rear c ...

Other materials:

Fuel Gauge Sender Unit Inspection [2 Wd]
NOTE: For the fuel gauge sender unit removal/installation, refer to the fuel pump removal/installation because the fuel gauge sender unit is integrated with the fuel pump.. 1. Verify that the resistance at fuel gauge sender unit terminals D and C is as indicated in the table ac ...

Torque Sensor
Purpose/ Function The torque sensor detects the steering torque and the steering direction, and outputs the signal to the Electric Power Steering (EPS) control module (CM). Construction, Operation The Hall IC-type torque sensor is installed to the top of the steering column ...

Rear Power Window Regulator Removal/Installation
1. Fully lower the rear door glass. 2. Disconnect the negative battery cable.. 3. Remove the following parts: a. Rear door trim. b. Rear door quarter glass. c. Rear door speaker. d. Rear power window motor. e. Rear door glass. 4. Remove bolts. 5. Insert a hand through the speak ...