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:

Front Wheel Hub Bolt Replacement
1. Remove the brake calliper component from the steering knuckle and suspend it out of the way using a cable. 2. Remove the disc plate. 3. Remove the wheel hub bolt using the SST as shown in the figure. 4. Place a new wheel hub bolt in the wheel hub. 5. Install the wheel hub by placi ...

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 ...

Shift Lever [C66 M R]
Purpose, Function The shift lever operates the MTX via the control cable. Construction Shift lever The shift lever is designed to prevent improper shifting to 1st gear and reverse. Operation 1 GR shifting A guide plate, attached to the shift lever assembly, ...