Troubleshooting

DTC P0345 CAMSHAFT POSITION SENSOR "A" CIRCUIT (BANK 2)

CIRCUIT DESCRIPTION

DTC Detection Condition:

The VVT sensor (VV signal) consists of a magnet, iron core and pickup coil.

The VV signal plate has 3 teeth on its outer circumference and is installed on the camshaft timing pulley. When the camshafts rotate, the protrusion on the signal plate and the air gap on the pickup coil change, causing fluctuations in the magnetic field and generating an electromotive force in the pickup coil. The NE signal plate (crankshaft position sensor plate) has 34 teeth and is installed on the crankshaft. The NE signal sensor generates 34 signals at every engine revolution. The ECM detects the crankshaft angle and the engine revolution based on the NE signal, and the cylinder and the angle of the VVT based on the combination of the VV and NE signal.

HINT:
- DTC P0340 and P0345 indicate a malfunction related to the VVT sensor (+) circuit (Wire harness (ECM - VVT sensor) and VVT sensor).
- DTC P0341 and P0346 indicate a malfunction related to the VVT sensor (-) circuit (Wire harness (ECM - VVT sensor) and VVT sensor).








Inspection using the oscilloscope.
During cranking or idling, check the waveform between terminals of the ECM connector.

Wiring Diagram:

Step 1 - 2:

Step 3 - 4:

INSPECTION PROCEDURE

HINT: Read freeze frame data using the hand-held tester or the OBD II scan tool, as freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, it is useful for determining whether the vehicle was running or stopped, the engine was warmed up or not, the air-fuel ratio was lean or rich, etc. at the time of the malfunction.