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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:

Key Cylinder Switch
Purpose The switch turns on/off in conjunction with the front door key cylinder lock/unlock and the rear body control module (RBCM) detects the key cylinder operation condition by the change in the voltage. Function The key cylinder switch contact point changes in conjuncti ...

Sunvisor Removal/Installation
1. Disconnect the negative battery cable. (with vanity mirror illumination). 2. Remove the screw A. 3. Rotate the sunvisor in the direction of the arrow. 4. Unhook and remove the sunvisor. 5. Disconnect the vanity mirror illumination connector. (with vanity mirror illumination) 6. Pr ...

Headlight High Beam Indicator Light
Purpose Notifies the user that the headlights (HI) are illuminated. Function Illuminates when the headlight (HI) or parking illumination conditions are met. Construction Displayed in the instrument cluster. Operation 1. When the light switch is operat ...

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