P0368

DTC P0365 Camshaft Position Sensor "B" Circuit (Bank 1)
DTC P0367 Camshaft Position Sensor "B" Circuit Low Input (Bank 1)
DTC P0368 Camshaft Position Sensor "B" Circuit High Input (Bank 1)
DTC P0390 Camshaft Position Sensor "B" Circuit (Bank 2)
DTC P0392 Camshaft Position Sensor "B" Circuit Low Input (Bank 2)
DTC P0393 Camshaft Position Sensor "B" Circuit High Input (Bank 2)

DESCRIPTION

DTC Detection Condition:

The VVT sensor system consists of a timing rotor (installed on each camshaft) and Magnetic Resistance Element (MRE) type VVT sensor. The timing rotor (camshaft) has 3 protrusions. When it rotates, the magnetic vector (direction of magnetic field) applied to the VVT sensor's MRE varies, which causes its resistance to vary. This varying resistance is converted to voltage, and then modified into a rectangular waveform with Hi (approximately 4 V) and Lo (approximately 1 V) outputs. As a result, the actual camshaft's position is detected and the position is output to the ECM.




Reference: Inspection using an oscilloscope






HINT:
- The correct waveform is as shown.
- EV1+ and EV2+ stand for the VVT sensor (for exhaust side) signal, and NE+ stands for the CKP sensor signal.

MONITOR DESCRIPTION

Monitor Strategy (Part 1):

Monitor Strategy (Part 2):

Typical Enabling Conditions:

Typical Malfunction Thresholds:

Component Operating Range:

If no signal is transmitted by the VVT sensor despite the engine revolting, the ECM interprets this as a malfunction of the sensor.

When the sensor output voltage remains less than 0.3 V, or more than 4.7 V for more than 5 seconds, the ECM sets a DTC.

Wiring Diagram:

Step 1-2:

Step 3-4:

Step 4(Continued)-7:

Step 8:

INSPECTION PROCEDURE

Read freeze frame data using the intelligent tester or Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.