DTC P0340 CAMSHAFT POSITION SENSOR (CMPS) (PHASE) - Component Description
EF & EC-7181prose procedureCG10, CGA3
Component Description
The camshaft position sensor senses the protrusion provided with exhaust valve cam sprocket to identify a particular cylinder. The camshaft position sensor senses the piston position.
The sensor consists of a permanent magnet, core and coil.
When the engine is running, the high and low parts of the teeth cause the gap with the sensor to change.
The changing gap causes the magnetic field near the sensor to change.
Due to the changing magnetic field, the voltage from the sensor changes.
ECM Terminals and Reference Value
Specification data are reference values and are measured between each terminal and ECM ground.
CAUTION
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a grond other than ECM terminals, such as the ground.
ECM Terminals and Reference Value
44
WIRE COLORY
ITEMCamshaft position sensor (PHASE)
CONDITION[Engine is running] • Warm-up condition • Idle speed
DATA (DC Voltage)4 - 5V
WIRE COLOR
ITEM
CONDITION[Engine is running] • Engine speed is 2,000 rpm
DATA (DC Voltage)4 - 5V
On Board Diagnosis Logic
On Board Diagnosis Logic
P0340
Malfunction is detected when ...• The proper pulse signal from the camshaft position sensor (PHASE) is not sent to ECM while the engine is running.
Check Items (Possible Cause)• Harness or connectors (The camshaft position sensor (PHASE) circuit is open.) • Camshaft position sensor (PHASE)