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:

Units
Electric current A (ampere) Electric power W (watt) Electric resistance ohm Electric voltage V (volt) Length mm (millimeter) in (inch) ...

Glove Compartment Removal/Installation
CAUTION: If the glove compartment is closed without being joined to the stay damper, the stay damper may be damaged. Verify that the stay damper is joined to the glove compartment before closing the glove compartment. 1. Pull the stay damper in the direction (1) shown in the figu ...

Purge Solenoid Valve Removal/Installation [Mzr 2.0, Mzr 2.5]
1. Remove the battery cover.. 2. Disconnect the negative battery cable.. 3. Remove in the order indicated in the table. 1 Purge solenoid valve connector 2 Evaporative hose (See Evaporative Hose Installation Note.) 3 ...

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