Mazda 3 Service Manual: Camshaft Position (CMP) Sensor Inspection [Mzr 2.0, Mzr 2.5]

Mazda 3 Service Manual / Engine / Engine Assembly / Valvetrain, Cylinder Head / 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 output signal will malfunction resulting from fluctuation in magnetic flux and cause a deterioration in engine control.

1. Remove the battery cover..

2. Disconnect the negative battery cable..

3. Remove the plug hole plate..

4. Disconnect the CMP sensor connector.

5. Remove the CMP sensor..

6. Verify that there are no metal shavings on the CMP sensor.

Remove any metal shavings that are adhering.

Voltage 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 output signal will malfunction resulting from fluctuation in magnetic flux and cause a deterioration in engine control.
If the wiring harnesses or waterproof connectors are damaged, water penetrating the connector will cause a sensor malfunction. To prevent this, be careful not to damage wiring harnesses or waterproof connectors.

1. Idle the engine.

2. Measure the CMP signal and verify that rectangular waves are produced..

If not as specified, replace the CMP sensor..

Valvetrain, Cylinder Head

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Camshaft Position (CMP) Sensor Removal/Installation [Mzr 2.0, Mzr 2.5]

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 output signal will malfu ...

Other materials:

Buckle Switch Inspection
Driver Side 1. Switch the ignition to off. 2. Disconnect the negative battery cable.. 3. Remove the front seat.. 4. Remove the front buckle.. 5. Inspect for continuity between the buckle switch terminals using a tester. If not as indicated in the table, replace the driver sid ...

Keyless Control Module Configuration
1. Connect the M-MDS (IDS) to DLC-2. 2. After the vehicle is identified, select the following items from the initialization screen of the IDS. Select “Module Programming”. 3. Then, select items from the screen menu in the following order. Select “Programmable Module Ins ...

Water Pump Removal/Installation [Mzr 2.0, Mzr 2.5]
WARNING: Never remove the cooling system cap or loosen the radiator drain plug while the engine is running, or when the engine and radiator are hot. Scalding engine coolant and steam may shoot out and cause serious injury. It may also damage the engine and cooling system. Tu ...