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Mazda CX-5 Service & Repair Manual: Air Fuel Ratio (A/F) Sensor Heater Control

Mazda CX-5 Service & Repair Manual / Engine / Control / Air Fuel Ratio (A/F) Sensor Heater Control

Outline

Block Diagram


Operation

Pre-heater control

Normal control


Output duty ratio

Control condition

0%

  • Ignition switched off

  • Engine stopped

  • Engine start (cranking)

0?100%

(Duty ratio determined by measuring the element temperature by the A/F sensor heater element impedance)

  • After engine warm-up (value fluctuates by battery condition, etc.)


Accelerator Pedal Position (App) Sensor
Purpose/Function Detects the accelerator pedal depression amount as basic information for mainly determining the throttle valve opening. Detects the accelerator pedal depression amou ...

Air Fuel Ratio (A/F) Sensor Inspection
A/F Sensor 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-M ...

Other materials:

Glass Antenna
Purpose, Function The RDS (Radio Data System) converts radio broadcast waves to electric signals and sends the signals to the audio unit. Construction An antenna with excellent noise resistance has been adopted to the rear window glass. Fail-safe Function n ...

Quick Release (Fuel System) Connector
Purpose, Function Serviceability has been improved by the easy disconnection/connection. Construction The following types of the quick release connectors are used. U.S.A. and CANADA Except U.S.A. and CANADA Type A An SST is not used with this type. ...

Column Cover Removal/Installation
1. Pull down the steering wheel. 2. Press the shaded area shown in the figure using your thumb, and lift the upper column cover in the direction of arrow (1). 3. Pull the upper column cover in the direction of the arrow (2) and remove it while detaching pins A, tabs B and guides C. 4. ...

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