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:

Neutral Switch
Purpose/Function Detects the neutral position of the shift lever. Construction Installed to the manual transaxle. An ON/OFF type switch has been adopted. Operation Inputs the neutral switch on/off signal to the PCM. The contact point is on ...

Rear Bumper Reinforcement Removal/Installation
1. Disconnect the negative battery cable.. 2. Remove the following parts: a. Rear splash shield. b. Rear combination light. c. Rear bumper. 3. Remove the hanger rubber in the direction of the arrow (1) shown in the figure. 4. Remove nuts. CAUTION: Removing the rear bumper ...

Jacking Positions, Vehicle Lift (2 Supports) And Safety Stand (Rigid Rack) Positions
Jacking Positions WARNING: Improperly jacking a vehicle is dangerous. The vehicle can slip off the jack and cause serious injury. Use only the correct front and rear jacking points and block the wheels. CAUTION: Use safety stands to support the vehicle after it has been ...