Mazda CX-5 Service & Repair Manual: Camshaft Position (CMP) Sensor

Mazda CX-5 Service & Repair Manual / Engine / Engine Assembly / Valvetrain, Cylinder Head / Camshaft Position (CMP) Sensor

Purpose/Function

Detects the camshaft speed as basic information for mainly determining the fuel injection timing and ignition timing.
Detects the camshaft speed and inputs it to the PCM as a CMP signal.

Construction

Intake CMP sensor

Installed on the cylinder head.
A GMR element has been adopted as the detecting element for detecting the intake camshaft speed.

Exhaust CMP sensor

Installed on the rear housing.
A GMR element has been adopted as the detecting element for detecting the exhaust camshaft speed.

Operation

Inputs the signal, which fluctuates according to the camshaft speed, to the PCM.

CMP sensor characteristic

Fail-safe

Intake CMP sensor


DTC No.	Fail-safe function
P0340:00	Set the electric variable valve timing control to the maximum cam retard mode.

Exhaust CMP sensor


DTC No.	Fail-safe function
P0365:00	Stops the fuel injection. Stops the ignition.

Camshaft Position (CMP) Sensor Removal/Installation

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 ...

Camshaft

Purpose, Function The camshaft is rotated by receiving the rotation force of the crankshaft via the timing chain. The valve is opened and closed according to the cam shape at this time. ...

Other materials:

Engine Oil Control
Outline The PCM reduces the oil pump load applied to the engine by controlling the appropriate engine hydraulic pressure according to the engine operation conditions. The engine hydraulic pressure switches in two steps. When hydraulic pressure is not needed, the oil pump dischar ...

Cruise Control System
Outline Enables driving at a constant speed by setting the vehicle speed with the cruise control switch instead of operating the accelerator pedal. The PCM controls the throttle valve actuator to maintain the vehicle at a constant speed. Component and function ...

Audio System
NOTE: “iPod” is a registered trademark of Apple Inc. in the United States and other countries. Outline An audio unit compatible with AM/FM tuner and MP3/WMA (Windows Media Audio)/AAC (Advanced Audio Coding) has been adopted. There are two types of audio units, ...