P0340
DTC P0340: Camshaft Position Sensor CircuitWiring Diagram:
Wiring Diagram
System Description
CMP sensor detects REF signal and POS signal.
- REF signal: 4 pulses/1 revolution of camshaft. There are 2 different kinds of wavelength. Based on REF signal, ECM judges which cylinder is at TDC.
- POS signal: 6 pulse/1 revolution of camshaft. Each of POS signals has equivalent wavelength. Based on POS signal, ECM judges the wavelength of REF signals, engine speed and piston position.
Reference
System Diagram:
Connect oscilloscope between terminals "C51-1-13" (REF) or "C51-1-12" (POS) and "C51-3-26" (ground) of ECM connector connected to ECM and check CMP sensor signal.
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
1. Connect scan tool to DLC with ignition switch turned OFF.
2. Turn ON ignition switch and clear DTC, pending DTC and freeze frame data by using scan tool.
3. Crank engine for 3 seconds or more and keep it at idle for 1 min.
4. Check DTC by using scan tool.
Step 1 - 3:
Step 4 - 6:
DTC Troubleshooting