P0340

DTC P0340: Camshaft Position Sensor Circuit

Wiring Diagram:

Wiring Diagram

System Description
The CMP sensor located on the transmission side of cylinder head consists of the signal generator (photo transistors) and signal rotor (slits plate). The signal generator generates reference signal and position signal through two types of slits in the slit plate which turns together with the camshaft.

Reference signal
The CMP sensor generates 4 pulses of signals each of while has a different waveform length while the camshaft makes one full rotation. Based on these signals, ECM judges which cylinder piston is in the compression stroke.

Position signal
The CMP sensor generates 360 pulses of signals while the camshaft makes one full rotation (i.e., 1 pulse per 1° movement of the camshaft). Based on these signals, ECM judges the waveform length of Reference signal, the engine speed and piston position.

DTC Detecting Condition And Trouble Area:

DTC Detecting Condition And Trouble Area

DTC Confirmation Procedure
1. With ignition switch turned OFF, connect scan tool.
2. Turn ON ignition switch and clear DTC using scan tool.
3. Crank engine for 6 sec. or more.
4. Check DTC and pending DTC.

Step 1-7:

Step 7(Continued)-13:

Step 14-16:

DTC Troubleshooting