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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:

Seat Track Position Sensor Removal/Installation [Two Step Deployment Control System]
1. Switch the ignition to off. 2. Disconnect the negative battery cable and wait for 1min or more.. 3. Remove the front driver’s seat.. 4. Disconnect the connector from the seat track position sensor by pressing the connector tab and pulling out the lock lever in the direction of the arro ...

Auxiliary Jack/Usb Port Inspection
Auxiliary jack inspection 1. Disconnect the negative battery cable.. 2. Remove the following parts: a. Upper console. b. Auxiliary jack/USB port. 3. Connect a commercially-available plug to the external input unit. 4. Verify that the continuity between the external input unit terminal ...

Rear Drive Shaft
Purpose, Function Engine noise and vibration have been reduced due to adoption of a bell joint on the wheel side of the constant velocity joint. A low noise and vibration double offset joint with low slide resistance has been adopted for the differential side of the constant vel ...

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