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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:

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NOTE: The climate control unit prior to replacement stores the vehicle specification information. The new climate control unit does not store any vehicle specification information. When the ignition is switched ON after the climate control unit is replaced, the climate ...

Sirius Satellite Radio Unit Removal/Installation
CAUTION: The audio unit communicates with the SIRIUS satellite radio unit and records the presence/non-presence of the SIRIUS satellite radio unit when the ignition is switched to ACC or ON (engine off or on) after connecting the negative battery cable. If the commander ...

Bsm Indicator Light Does Not Flash While Under Bsm Indicator Light Flashing Conditions (With Combination Switch Operation (Turn Signal Switch)) [Blind Spot Monitoring (Bsm)]
Description BSM indicator light does not flash while under BSM indicator light-flashing conditions (with combination switch operation (turn signal switch)) The BSM indicator light does not flash or illuminate continuously, but the cond ...

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