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

Mazda 3 Service Manual / Engine / Control / Sensors, Switches, Relays / 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..

Air Fuel Ratio (A/F) Sensor Removal/Installation [Mzr 2.0, Mzr 2.5]

WARNING: A hot engine and exhaust system can cause severe burns. Turn off the engine and wait until they are cool before removing the exhaust system. 1. Remove the battery cover.. 2 ...

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:

Vacuum Hose Removal/Installation [Mzr 2.0, Mzr 2.5]
1. Remove the battery and battery tray.. 2. Remove the vacuum hose from the vacuum hose clip. 3. Insert a thin flathead screwdriver at the point indicated by the arrow in the figure, push the ring down and disconnect the vacuum hose from the intake manifold. 4. Move the vacuum hose ...

PCM Configuration [Mzr 2.0, Mzr 2.5]
CAUTION: If the wheel and tire sizes are changed, a discrepancy with the speedometer needle whereby it exceeds the allowable range could result in a malfunction. If the wheel and tire sizes are changed, perform the following procedure to change the tire size parameter setting.. ...

TCM Configuration [Fw6 A EL]
NOTE: The TCM is built into the control valve body. 1. Verify TCM configuration implementation necessity for replacement parts. Replacement part Configuration necessity Control valve body replacement Necessary ...