Mazda 3 manuals

Mazda 3 Service Manual: Air Fuel Ratio (A/F) Sensor Inspection [Mzr 2.0, Mzr 2.5]

Mazda 3 Service Manual / Engine / Control / Sensors, Switches, Relays / Air Fuel Ratio (A/F) Sensor Inspection [Mzr 2.0, Mzr 2.5]

A/F Sensor Inspection

1. Connect the M-MDS to the DLC-2.


2. Switch the ignition to ON.

3. Warm up the engine to normal operating temperature.

4. Access the following PIDs using the M-MDS..

5. Drive the vehicle and decelerate the engine speed by releasing the accelerator pedal fully when the engine speed is 3,000 rpm or more

.

6. Verify that the A/F sensor output current (PID: O2S11) is 0.25 mA or more

while decelerating as shown in the figure.


A/F Sensor Heater Inspection

WARNING:

1. Remove the battery cover..

2. Disconnect the negative battery cable..

3. Remove the plug hole plate..

4. Remove the air cleaner assembly. (MZR 2.5).

5. Disconnect the A/F sensor connector.

6. Measure the resistance between A/F sensor terminals A and E.


Accelerator Pedal Position (App) Sensor Inspection [Mzr 2.0, Mzr 2.5]
Voltage Inspection NOTE: Because the APP sensor is integrated in the accelerator pedal, replacing the APP sensor includes replacement of the accelerator pedal. 1. Connect the M-MDS t ...

Air Fuel Ratio (A/F) Sensor Removal/Installation [Mzr 2.0, Mzr 2.5]
WARNING: A hot engine and exhaust system can cause severe burns. Turn off the engine and wait until they are cool before removing the exhaust system. 1. Remove the battery cover.. 2 ...

Other materials:

Front Oil Seal Replacement [Mzr 2.0, Mzr 2.5]
1. Remove the battery cover.. 2. Disconnect the negative battery cable.. 3. Remove the plug hole plate.. 4. Disconnect the wiring harness. 5. Remove the ignition coils.. 6. Remove the spark plugs.. 7. Remove the ventilation hose. 8. Remove the oil level gauge. 9. Remove the cylinder ...

Key
WARNING Do not leave the key in your vehicle with children and keep them in a place where your children will not fi nd or play with them: Leaving children in a vehicle with the key is dangerous. This could result in someone being badly injured or even killed. Children ...

Refrigerant Pressure Sensor Inspection [Full Auto Air Conditioner]
MZR 2.3 DISI Turbo, MZR 2.5 1. Install the manifold gauge. 2. Verify the high-pressure side reading of the manifold gauge. 3. Measure the terminal voltage of the climate control unit. 1C, 1E and 2J 4. Verify that below graph as measure the terminal voltage 2J. 5. Follow the clim ...

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