The Camshaft Position Sensor (CMPS) is a sensor that detects the compression TDC of the NO. 1 cylinder. The CMPS consists of a hall type sensor and a target on the end of the intake 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 PCM and the PCM uses the CMPS signal for synchronizing the firing of sequential fuel injectors.
If there is no change of signal, the PCM judged as a fault and DTC is set.
Item | Detecting Condition | Possible cause |
DTC Strategy | ● Change in output voltage(△Vcmp)is monitored | ● Poor connection ● Open or short in CMPS ● Faulty CMPS ● Faulty PCM |
Enable Conditions | ● Cranking switch "ON" | |
Threshold value | ● △Vcmp = 0 | |
Diagnosis Time | ● Continuous |
