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:

Aerodynamic Under Cover No.1 Removal/Installation
1. Remove the aerodynamic under cover No.2.. 2. Peel off the front mudguard.. 3. Remove the bolts and fastener. 4. Remove the aerodynamic under cover No.1 in the direction of the arrow shown in the figure. CAUTION: Be careful not to damage the aerodynamic under cover No.1 durin ...

Automatic Transaxle Removal/Installation [Fw6 A EL]
CAUTION: Secure the steering wheel using tape or a cable to prevent the steering shaft from rotating after disconnecting the steering shaft. If the steering wheel rotates after the steering shaft and the steering gear and linkage are disconnected, the internal parts of the clock spr ...

Front Fog Light Aiming
CAUTION: If the front fog light aiming is adjusted with cargo in the vehicle, it may not adjust correctly. Adjust the front fog light aiming with the vehicle under the following conditions: No occupants inside vehicle Cargo other than spare tire, jack, and tools ...

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