Mazda 3 Service Manual: General

HVAC

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Air Filter Inspection

1. Verify that there is no damage, excessive dirt, or abnormal odor on the air filter. If there is any malfunction, replace the air filter. NOTE: The air filter cannot be reuse ...

Other materials:

ABS HU/CM Inspection
1. Disconnect the ABS HU/CM connector.. 2. Connect the negative battery cable.. 3. Attach the tester lead to the ABS HU/CM wiring harness-side connector and inspect the voltage, continuity, or resistance according to the standard (reference value) in the table below. Standard (reference) ...

Crankshaft Position (CKP) Sensor Removal/Installation [Mzr 2.0, Mzr 2.5]
Removal CAUTION: When foreign material such as an iron chip is on the CKP sensor, it can cause abnormal output from the sensor because of flux turbulence and adversely affect the engine control. Be sure there is no foreign material on the CKP sensor when replacing. Do not a ...

Engine Coolant Protection Inspection [Mzr 2.0, Mzr 2.5]
1. Measure the engine coolant temperature and specific gravity using a thermometer and a hydrometer. CAUTION: Use engine coolant at a concentration that meets the environmental conditions in which the vehicle is driven, otherwise engine damage could occur. The engine has alumi ...