DTC P0340 Camshaft Position Sensor Circuit Malfunction: DTC P0345 Camshaft Position Sensor "A" Circuit (Bank 2): Description

WARNING: This page is about a different car, the 2007 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

The Variable Valve Timing (VVT) sensor consists of a magnet, iron core and pickup coil. The camshaft timing rotor has 3 teeth on its outer circumference and is installed on the intake camshaft. When the camshafts rotate, change occur on the camshaft protrusions and the pickup coil air gaps. These changes cause fluctuations in the magnetic field and generate voltage in the pickup coil.

Each sensor monitors its camshaft timing rotor, which is located on the camshaft. The ECM uses the sensor to detect the camshaft angle. The camshaft rotation synchronizes with the crankshaft rotation, and this sensor communicates the rotation of the camshaft timing rotor as a pulse signal to the ECM. Based on the signal, the ECM controls camshaft position.

DTC TROUBLE DETECTION CONDITION

DTC No.	DTC Detection Condition	Trouble Area
P0340 P0345	No VVT sensor signal to ECM during cranking (2 trip detection logic) No VVT sensor signal to ECM with engine speed 600 rpm or more (1 trip detection logic)	Open or short in VVT sensor circuit VVT sensor intake camshaft Timing belt has a jumped tooth ECM

HINT:

DTC P0340 and P0345 indicate a malfunction related to the VVT sensor (+) circuit (wire harness (from ECM to VVT sensor) and VVT sensor).

Fig 1: VV1, VV2 And NE Signal Waveform

Reference: Inspect using an oscilloscope.

During cranking or idling, check the waveform of the ECM connector.

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Specified Condition
E7-25 (VV1+) - E7-24 (VV1-)	Correct waveform is as shown
E7-18 (VV2+) - E7-28 (VV2-)	Correct waveform is as shown
E7-21 (NE+) - E7-20 (NE-)	Correct waveform is as shown