Mazda 3 Service Manual: Valvetrain, Cylinder Head

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 ...

Camshaft Position (CMP) Sensor Inspection [Mzr 2.0, Mzr 2.5]

Visual Inspection CAUTION: When replacing the CMP sensor, make sure there is no foreign material on it such as metal shavings. If it is installed with foreign material, the sensor outpu ...

Other materials:

Basic Inspection [FS5 A EL]
STEP INSPECTION ACTION 1 Measure the battery voltage. Is the battery voltage 10.0—14.0 V? Yes Go to the next step. No Replace or recharge the battery. (See BATTERY RECHA ...

Blind Spot Monitoring (Bsm) Control Module Removal/Installation
CAUTION: If the BSM control modules are installed with the left and right modules reversed, a DTC will be displayed and system will enter the fail-safe function. Therefore, confirm that the left/right BSM control modules are installed correctly. 1. Disconnect the negative battery ...

Brake Switch Inspection
CAUTION: Inspect the brake switch with it installed to the brake pedal, otherwise the brake switch may not operate normally. If the brake switch is removed from the brake pedal, replace the brake switch with a new one. 1. Disconnect the brake switch connector. 2. Verify that th ...