Mazda CX-5 Service & Repair Manual: Crankshaft Position (CKP) Sensor Inspection

Mazda CX-5 Service & Repair Manual / Engine / Control / Crankshaft Position (CKP) Sensor Inspection

Visual Inspection

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 assemble the CKP sensor or change the installation position using any method other than the following. Otherwise, it could negatively affect engine controls, such as the ignition timing and fuel injection.

1. Remove the CKP sensor..

2. Verify that there are no metal shavings on the sensor.

If there is a malfunction, remove any metal shavings that are adhering.

Voltage Inspection

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 assemble the CKP sensor or change the installation position using any method other than the following. Otherwise, it could negatively affect engine controls, such as the ignition timing and fuel injection.
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 CKP sensor output voltage using the oscilloscope.

If not as specified, replace the CKP sensor..


Terminal	Voltage (V)	Condition
A	Approx. 5.0	Under any condition
B	Below 1.0	Under any condition
C	Above 4.5	High output*
C	Below 0.8	Low output*

* Output voltage varies with crankshaft rotation.

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 ...

Crankshaft Position (CKP) Sensor Removal/Installation

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. ...

Other materials:

Driving In Flooded Area
WARNING Dry off brakes that have become wet by driving slowly, releasing the accelerator pedal and lightly applying the brakes several times until the brake performance returns to normal: Driving with wet brakes is dangerous. Increased stopping distance or the vehicle pulling to one side whe ...

DSC HU/CM
Outline A high reliability, reduced size and weight DSC HU/CM, integrating both the DSC HU and the DSC CM, has been adopted. DSC HU Part Purpose/Function According to DSC CM signals, the DSC HU controls (on/off) each solenoid valve and the pump motor, adjusts fluid pr ...

Evaporative Emission (Evap) Control System
Purpose, Outline Prevents release of evaporative gas into the atmosphere. The intake manifold vacuum introduces evaporative gas to the intake manifold via the charcoal canister and the purge solenoid valve. System Diagram U.S.A. and CANADA Except U.S.A. and CANADA ...