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:

Vacuum Pump Removal/Installation
1. Remove the plug hole plate.. 2. Remove the battery.. 3. Set the PCM wiring harness out of the way. 4. Disconnect the vacuum hose from the vacuum pump.. 5. Remove in the order shown in the table. 6. Install in the reverse order of removal. 1 Vacuum hose ...

Cruise Set Indicator Light (Green)
Purpose/Function Illuminates during the cruise control system operation to inform the driver that the cruise control system is operating. Construction Built into the instrument cluster. Operation Illuminates during the cruise control system operation. ...

Interior Equipment (View B)
1 Audio control switches 2 SRS air bags 3 Cruise control switches 4 Navigation system (if equipped) 5 Audio system 6 Hazard warning flasher switch 7 Climate control system 8 Glove compartment 9 Rear window defroster switch 10 Accessory socket 11 MT shift lever 12 AT shift lever ...