Mazda 3 Service Manual: Exhaust & Emissions

Valve Clearance Inspection [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 ...

Exhaust System Inspection [Mzr 2.0, Mzr 2.5]

1. Start the engine and inspect each exhaust system component for exhaust gas leakage. If there is leakage, repair or replace the appropriate component.. ...

Other materials:

Front Fog Light Relay Removal/Installation
1. Disconnect the negative battery cable.. 2. Remove the front mudguard.(RH). 3. Remove the front fog light relay case. 4. Remove the cover. 5. Remove the front fog light relay. 6. Install in the reverse order of removal.. Front Fog Light Relay Installation Note 1. Install the front ...

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.. VSS (Vehicle speed) RPM (Engine speed) O2S12 (HO2S output voltage) 5. Drive ...

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 ...