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:

General Procedures (Front And Rear Axles)
Wheel and Tire Installation 1. When installing the wheels and tires, tighten the wheel nuts in a criss-cross pattern to the following tightening torque. Tightening torque 108—147 N·m {12—14 kgf·m, 80—108 ft·lbf} Suspension Links Removal/Installation 1. For the joint ...

Rear Brake (Disc) Removal/Installation
1. Loosen the adjusting nut.. 2. Remove in the order indicated in the table. 3. Install in the reverse order of removal. 4. After installation, add brake fluid, bleed the air, and inspect for fluid leakage.. 5. Pump the brake pedal a few times and inspect the following: The disc pa ...

Rear Mount Camera Removal/Installation
CAUTION: The audio unit communicates with the rear mount camera and records the presence/non-presence of the rear mount camera when the ignition is switched to ACC or ON (engine off or on) after connecting the negative battery cable. If the commander switch is installed wit ...