Troubleshooting

DTC P0340 Camshaft Position Sensor "A" (circuit (Bank 1 Or Single Sensor)

CIRCUIT DESCRIPTION

DTC Detection Condition:

The camshaft position sensor (G2 signal) consists of a magnet, iron core and pickup coil.

The G2 signal plate has 1 tooth on its outer circumference and is installed on the camshaft timing pulley LH. 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 No.1) 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 speed based on the NE signals, and the cylinder detection based on the combination of the G2 and NE signals.

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

Wiring Diagram:

Step 1:

Step 2 - 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.