Mazda CX-5 Service & Repair Manual: Camshaft Position (CMP) Sensor Inspection
Intake CMP Sensor
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 intake CMP sensor..
2. Verify that there are no metal shavings on the intake CMP sensor.
-
If there is a malfunction, 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 intake CMP sensor output voltage using the oscilloscope.
-
If not as specified, replace the intake CMP sensor..
|
Terminal |
Voltage (V) |
Condition |
|
A |
Above 4.8 |
High output* |
|
Below 0.8 |
Low output* |
|
|
B |
Below 1.0 |
Under any condition |
|
C |
B+ |
Under any condition |
* Output voltage varies with camshaft rotation.
Exhaust CMP Sensor
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 exhaust CMP sensor..
2. Verify that there are no metal shavings on the exhaust CMP sensor.
-
If there is a malfunction, 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 exhaust CMP sensor output voltage using the oscilloscope.
-
If not as specified, replace the exhaust CMP sensor..
|
Terminal |
Voltage (V) |
Condition |
|
A |
Above 4.8 |
High output* |
|
Below 0.8 |
Low output* |
|
|
B |
Below 1.0 |
Under any condition |
|
C |
B+ |
Under any condition |
* Output voltage varies with camshaft rotation.
Air Fuel Ratio (A/F) Sensor
Purpose/Function
Detects the oxygen concentration (all-range air/fuel ratio) in the exhaust
gas as basic information for mainly determining the fuel injection amount.
Detects the oxy ...
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 ...
Other materials:
Condenser
Purpose
The condenser cools the high-temperature, highly pressurized refrigerant.
Function
The condenser cools the high-temperature, highly pressurized gaseous refrigerant
compressed by the A/C compressor using the outside air, and changes it to liquid
refrigerant.
Co ...
Shift Solenoid No.3 [Fw6 A EL, Fw6 Ax EL]
Purpose/Function
Shift solenoid No.3 adjusts the hydraulic pressure in the R-3-5 brake circuit
based on the current demand from the TCM according to the vehicle conditions.
Construction
Shift solenoid No.3 is installed to the solenoid control valve body.
Shift solenoid ...
DSC HU/CM Inspection
1. Disconnect the DSC HU/CM connector..
2. Connect the negative battery cable..
3. Attach the tester lead to the DSC HU/CM wiring harness-side connector and
inspect voltage, continuity, or resistance according to the standard (reference)
on the table.
Standard (Reference)
...
