DTC P0340, P0342, P0343; Camshaft Position Sensor Circuit [08/2013 - 08/2016]: Description

WARNING: This page is about a different variant/trim than selected.

The camshaft position sensor (No. 1 crank position sensor) (for intake camshaft) (VV1 signal) consists of a magnet and MRE (Magneto Resistance Element).

The camshaft has a timing rotor for the camshaft position sensor (No. 1 crank position sensor). When the camshaft rotates, changes occur in the air gaps between the timing rotor and MRE, which affects the magnetic field. As a result, the resistance of the MRE material fluctuates. The camshaft position sensor (No. 1 crank position sensor) converts the camshaft rotation data to pulse signals, uses the pulse signals to determine the camshaft angle, and sends it to the ECM.

Then the ECM uses this data to control fuel injection duration, fuel injection timing and Variable Valve Timing (VVT) system.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Memory
P0340	Camshaft Position Sensor Circuit	One of the following conditions is met: Missing camshaft position sensor (No. 1 crank position sensor) (for intake camshaft) signal despite crankshaft position sensor inputs normal at engine speed of 600 rpm or higher (1 trip detection logic). No camshaft position sensor (No. 1 crank position sensor) (for intake camshaft) signal to ECM at engine speed of 600 rpm or higher (1 trip detection logic). No camshaft position sensor (No. 1 crank position sensor) (for intake camshaft) signal to ECM while cranking (2 trip detection logic).	Open or short in camshaft position sensor (No. 1 crank position sensor) (for intake camshaft) circuit Camshaft position sensor (No. 1 crank position sensor) (for intake camshaft) Camshaft housing sub-assembly Valve timing ECM	Comes on	DTC stored
P0342	Camshaft Position Sensor "A" Circuit Low Input (Bank 1 or Single Sensor)	The output voltage of the camshaft position sensor (No. 1 crank position sensor) (for intake camshaft) is less than 0.3 V for 4 seconds (1 trip detection logic).	Open or short in camshaft position sensor (No. 1 crank position sensor) (for intake camshaft) circuit Camshaft position sensor (No. 1 crank position sensor) (for intake camshaft) ECM	Comes on	DTC stored
P0343	Camshaft Position Sensor "A" Circuit High Input (Bank 1 or Single Sensor)	The output voltage of the camshaft position sensor (No. 1 crank position sensor) (for intake camshaft) is higher than 4.7 V for 4 seconds (1 trip detection logic).	Open or short in camshaft position sensor (No. 1 crank position sensor) (for intake camshaft) circuit Camshaft position sensor (No. 1 crank position sensor) (for intake camshaft) ECM	Comes on	DTC stored

Reference: Inspection using an oscilloscope.

HINT:

The correct waveform is as shown.
VV1 stands for the camshaft position sensor (No. 1 crank position sensor) (for intake camshaft) signal, and EV1 stands for the camshaft position sensor (No. 1 crank position sensor) (for exhaust camshaft) signal.

ECM Terminal Name	CH1: Between VV1+ and VV1- CH2: Between EV1+ and EV1-
Tester Range	5 V/DIV., 20 ms./DIV.
Condition	Idling with warm engine