The Camshaft Position Sensor (CMPS) is a Hall Effect sensor that tracks the camshaft position. The CMPS consists of a hall type sensor and a target on the end of the camshaft. When the target triggers the sensor, the sensor voltage is 5V. If not, the sensor voltage is 0V. These CMPS signal is sent to the ECM and the signal is for synchronizing the of sequential fuel injectors.
Checking oputput signals from CMP during engine running, if the expected number of cam tooth count is not observed, ECM sets P0366.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Check if CAM sensor is synchronized correctly |
•
Poor connection
•
Short in harness
•
Electrical noise
•
Target wheel
•
CMPS(B1-Exhaust)
•
ECM |
Enable Conditions |
•
Engine running state | |
Threshold value |
•
Cam tooth count ≠ 6 | |
Diagnosis Time |
•
Continuous | |
MIL On Condition |
•
3 driving cycles |
Item | Specification | |
Output Voltage(V) | Hi : 5.0V | Low : 0.7V |
Airgap(mm) | 0.5 ~ 1.5 | |
Fig.1) Normal waveforms of CMPS
