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:

Procedure [Plastic Body Parts]
Repair of polypropylene bumpers having damage that has reached the surface of the polypropylene and are too serious to be restored by painting only. 1. Cut the rough edges around the damage with a knife to make it smooth. Sand the area with a sander to make an angle of about 45°. 2. ...

Rear Door Quarter Glass Removal/Installation
1. Fully lower the rear door glass. 2. Disconnect the negative battery cable.. 3. Remove the rear door trim.. 4. Remove the rear door weather strip arrow (1) shown in the figure. 5. Remove the service hole cover No.1 arrow (2) shown in the figure. CAUTION: When removing service ...

Condenser Removal/Installation
1. Disconnect the negative battery cable.. 2. Remove the following parts: a. Trunk board. b. Trunk end trim (LH). c. Rear scuff plate (LH). d. Trunk side trim (LH). e. D-pillar trim (LH). 3. Disconnect the connector. 4. Remove the bolts. 5. Remove the condenser. 6. Install in ...