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:

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 ...

Drive Belt Removal/Installation [Mzr 2.3 Disi Turbo]
1. Remove the aerodynamic under cover No.2 and splash shield as a single unit.. 2. Rotate the drive belt auto tensioner in the direction shown in the figure and remove the drive belt. 3. Install the drive belt. 4. Verify that the drive belt auto tensioner indicator mark does not exceed ...

Throttle Position (TP) Sensor Inspection [Mzr 2.0, Mzr 2.5]
Voltage Inspection CAUTION: The inspection cannot be performed with this method correctly if there is a malfunction of the APP sensor or throttle valve actuator. Verify that no DTCs related to the APP sensor or throttle valve actuator are stored before the inspection. NOTE: ...