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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:

Solar Radiation Sensor [Full Auto Air Conditioner]
Purpose The solar radiation sensor detects the sunlight intensity emitted to the cabin. Function The solar radiation sensor converts the detected solar radiation amount to an electric signal. Construction A photodiode (light receiving diode) has been adopted fo ...

Refrigerant Pressure Sensor Removal/Installation [Manual Air Conditioner]
1. Disconnect the negative battery cable.. 2. Discharge the refrigerant.. 3. Disconnect the refrigerant pressure sensor connector. CAUTION: If moisture or foreign material enters the refrigeration cycle, cooling ability will be lowered and abnormal noise will occur. Always immediate ...

Connecting Rod, Connecting Rod Bearing
Purpose, Function Connecting rod The connecting rod transmits the reciprocating movement of the piston to the crankshaft by engaging the piston pin and crank pin. Connecting rod bearing The connecting rod bearing forms an oil film on the outer surface of the crank pin to p ...

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