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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:

Ignition Coil [Skyactiv G 2.0]
Purpose, Function The ignition coil generates high voltage by electromagnetic induction to discharge the spark plug. Construction The ignition coil is installed to the upper part of the spark plug (direct ignition coil). With the adoption of the direct ignitio ...

Warning/Indicator Lights
Warning (Display Indication) Message information such as system operations or malfunctions is indicated in the display. Check the vehicle condition or have the vehicle inspected at an Authorized Mazda Dealer according to the indication. Brake System Warning Light This warning has th ...

Oil Strainer
Purpose, Function The oil strainer suctions the engine oil in the oil pan using the oil pump vacuum. The engine oil is filtered by the internal filter at that time. Construction The oil strainer is installed on the suction port of the oil pump. The oil strain ...

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