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:

Shift Control Module Removal/Installation [C66 M R]
Removal 1. Shift the shift lever to the neutral position. 2. Remove the plug hole plate.. 3. Disconnect the negative battery cable.. 4. Remove the air cleaner and air hose as a single unit.. 5. Remove the battery and battery tray.. 6. Disconnect the control cable from the transaxle. a. ...

Torque Box Removal [Panel Replacement]
Symbol Mark Removal Procedure 1. Drill the 19 locations indicated by (A) shown in the figure. NOTE: When drilling the 19 locations indicated by (A) shown in the figure, do not drill a hole all the way through or there could be a problem when installing the new part. 2 ...

Antenna Feeder No.1 Inspection
With audio system 1. Disconnect the negative battery cable.. 2. Remove the following parts: a. A-pillar trim (RH). b. Decoration panel. c. Audio unit. 3. Disconnect antenna feeder No.2. 4. Verify that the continuity between antenna feeder No.1 terminals is as indicated in the tabl ...