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Mazda CX-5 Service & Repair Manual: Heated Oxygen Sensor (HO2 S) Heater Control [Skyactiv G 2.0]

Mazda CX-5 Service & Repair Manual / HVAC / General / Heated Oxygen Sensor (HO2 S) Heater Control [Skyactiv G 2.0]

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


Front Heat Duct Removal/Installation
1. Disconnect the negative battery cable.. 2. Remove the following parts: a. Dashboard under cover. b. Side wall. c. Glove compartment. 3. Detach the tab and remove the front heat duct. LH ...

Heater Core
Purpose The heater core heats passing air. Function A portion of the engine coolant is taken into the heater core to heat the air passing through the heater core. Co ...

Other materials:

Exhaust Manifold
Purpose, Function By lengthening the exhaust passage, the transmission of exhaust pressure waves to other cylinders can be delayed, and the amount of gas exhausted from a cylinder and forced back inside the combustion chamber is reduced By reducing the residual gas, the temperature i ...

Brake/Clutch Fluid
Inspecting Brake/Clutch Fluid Level The brakes and clutch draw fluid from the same reservoir. Inspect the fluid level in the reservoir regularly. It should be kept at MAX. The level normally drops with accumulated distance, a condition associated with wear of brake and clutch linings. If it is ...

Supplier Identification Procedure [Audio]
NOTE: The unit supplier can vary. When asking the supplier (service center) for repair or replacement, identify the supplier and fill in the Audio Repair Order Form using the following procedures. Verification procedure using label or inscribed lettering 1. Disconnect the negati ...

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