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Mazda CX-5 Service & Repair Manual: Heated Oxygen Sensor (HO2 S) Heater Control

Mazda CX-5 Service & Repair Manual / Engine / Control / Heated Oxygen Sensor (HO2 S) Heater Control

Outline

Block Diagram


Operation


Output duty ratio

Control condition

0%

  • Engine stopped

  • Fuel cut injection control is in engine start zone

  • Engine coolant temperature is -10 °C {14 °F}or less

  • Other than battery voltage of 10—16 V

  • Within a fixed period of time after engine start (varies according to engine coolant temperature)

30%

  • HO2S not activated

0?100%

(Determined by engine speed and charging efficiency)

  • Other than the above


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 sen ...

Heated Oxygen Sensor (HO2 S) Inspection
HO2S Inspection 1. Connect the M-MDS to the DLC?2. 2. Switch the ignition ON (engine on). 3. Warm up the engine to normal operating temperature. 4. Access the following PIDs using the M-MDS.. ...

Other materials:

Rear Mount Camera Removal/Installation
CAUTION: The audio unit communicates with the rear mount camera and records the presence/non-presence of the rear mount camera when the ignition is switched to ACC or ON (engine off or on) after connecting the negative battery cable. If the commander switch is installed wit ...

Front Over Fender Removal/Installation
1. Remove fastener A. 2. Pull the front over fender lower in the direction of the arrow (1) while removing hook B and pin C. 3. Remove fasteners D. 4. Pull the front over fender upper in the direction of the arrow (2) while removing clips E. 5. Install in the reverse order of ...

Room Straight Line Dimensions (1) [Dimensions]
Point symbol Designation Hole diameter or bolt or nut size mm {in} A Front pillar inner datum hole ?7 {0.3} B Front pillar inner datum hole ?7 {0.3} C ...

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