Mazda 3 manuals

Mazda 3 Service Manual: Heated Oxygen Sensor (HO2 S) Inspection [Mzr 2.0, Mzr 2.5]

Mazda 3 Service Manual / Engine / Control / Sensors, Switches, Relays / Heated Oxygen Sensor (HO2 S) Inspection [Mzr 2.0, Mzr 2.5]

HO2S 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 HO2S outputs a voltage of 0.6 V or more

, one time or more, then verify that the HO2S voltage (PID: O2S12) is 0.3 V or less

while decelerating as shown in the figure.


HO2S Heater Inspection

WARNING:

1. Remove the battery cover..

2. Disconnect the negative battery cable..

3. Disconnect the HO2S connector.

4. Measure the resistance between HO2S terminals C and D.


Engine Coolant Temperature (ECT) Sensor Removal/Installation [Mzr 2.0, Mzr 2.5]
WARNING: When the engine is hot, it can badly burn. Turn off the engine and wait until it is cool before removing the ECT sensor. ECT Sensor No.1 1. Remove the battery cover.. 2. D ...

Heated Oxygen Sensor (HO2 S) 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:

Blower Motor Installation [Full Auto Air Conditioner]
1. Install the SST (49 B061 015A) to the blower motor. 2. Install the blower motor with the SST (49 B061 015A) installed, to the A/C unit. CAUTION: To prevent damage to the sirocco fan, install the blower motor being careful that the blower motor does not interfere with the ...

Operating Tips for MP3
MP3 stands for MPEG Audio Layer 3, which is standardized voice compression established by the ISO *1 working group (MPEG). Use of MP3 allows for audio data to be compressed to approximately a tenth of the source data size. This unit plays files with the extension (.mp3) as MP3 files. ...

Climate Control Unit Inspection [Manual Air Conditioner]
1. Remove the climate control unit with the connector connected.. 2. Switch the ignition to ON. 3. Connect the negative (-) lead of the tester to the body ground. 4. By inserting the positive (+) lead of the tester into the climate control unit connector, measure the voltage according to the ...

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