| DTC Code | DTC Name |
|---|---|
| P0365 | Camshaft Position Sensor "B" Circuit (Bank 1) |
| P0367 | Camshaft Position Sensor "B" Circuit Low Input (Bank 1) |
| P0368 | Camshaft Position Sensor "B" Circuit High Input (Bank 1) |
| P0390 | Camshaft Position Sensor "B" Circuit (Bank 2) |
| P0392 | Camshaft Position Sensor "B" Circuit Low Input (Bank 2) |
| P0393 | Camshaft Position Sensor "B" Circuit High Input (Bank 2) |
DESCRIPTION
The exhaust camshaft's Variable Valve Timing (VVT) sensor (EV1, EV2 signal) consists of a magnet and MRE (Magnetoresistive Element).
The exhaust camshaft has 3 teeth on its outer circumference.
When the exhaust camshaft rotates, changes occur in the air gaps between the 3 teeth and MRE, which affects the magnetic field. As a result, the resistance of the MRE material fluctuates. The VVT sensor converts the exhaust camshaft rotation data to pulse signals, uses the pulse signals to determine the camshaft angle, and sends the camshaft angle data to the ECM.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0365 P0390 |
There is no VVT sensor signal despite the crankshaft position sensor input being normal at an engine speed of 600 rpm or more (1 trip detection logic). |
|
| P0367 P0392 |
Output voltage of the VVT sensor is below 0.3 V for 4 seconds (1 trip detection logic). |
|
| P0368 P0393 |
Output voltage of the VVT sensor is higher than 4.7 V for 4 seconds (1 trip detection logic). |
|
| *a | EV1, EV2 and NE Signal Waveforms |
| *b | 5 V/DIV. |
| *c | 20 msec./DIV. |
Reference: Inspection using an oscilloscope
Tech Tips
The correct waveforms are as shown.
EV1 and EV2 are the VVT sensor signal, and NE is the crankshaft position sensor signal.
| Item | Content |
|---|---|
| Terminal | NE+ - NE- EV1+ - EV1- EV2+ - EV2- |
| Equipment Setting | 5 V/DIV. 20 msec./DIV. |
| Condition | Cranking or idling |
MONITOR DESCRIPTION
If no signal is transmitted by the VVT sensor despite the camshaft revolving, or the rotations of the camshaft and crankshaft are not synchronized, the ECM interprets this as a malfunction of the sensor.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
Tech Tips
Read freeze frame data using the GTS. 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.
Bank 1 refers to the bank that includes the No. 1 cylinder*.
*: The No. 1 cylinder is the cylinder which is farthest from the transmission.
Bank 2 refers to the bank that does not include the No. 1 cylinder.
PROCEDURE
CHECK TERMINAL VOLTAGE (SENSOR POWER SOURCE)
| *A | for Bank 1 |
| *B | for Bank 2 |
| *a | Front view of wire harness connector (to VVT Sensor) |
Disconnect the VVT sensor connector.
Turn the ignition switch to ON.
Measure the voltage according to the value(s) in the table below.
| Standard Voltage | |||||||||
|---|---|---|---|---|---|---|---|---|---|
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
| OK |
|
CHECK HARNESS AND CONNECTOR (VVT SENSOR - ECM)
Disconnect the VVT sensor connector.
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
| OK |
|
CHECK SENSOR INSTALLATION (VVT SENSOR FOR EXHAUST CAMSHAFT)
| *1 | Clearance |
| *2 | Normal |
| *3 | Abnormal |
Check the VVT sensor installation.
| OK |
|---|
| Sensor is installed correctly. |
| NG |
|
SECURELY REINSTALL SENSOR Click here |
| OK |
|
CHECK EXHAUST CAMSHAFT
Check the teeth of the camshaft.
| OK |
|---|
| Teeth do not have any cracks or deformation. |
| NG |
|
REPLACE EXHAUST CAMSHAFT Click here |
| OK |
|
REPLACE VVT SENSOR
Replace the VVT sensor Click here.
| NEXT |
|
CHECK WHETHER DTC OUTPUT RECURS
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Clear the DTCs Click here.
Start the engine.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
Read the DTCs.
| Result | Proceed to |
|---|---|
| No DTC is output | A |
| P0365, P0367, P0368, P0390, P0392 or P0393 is output | B |
Tech Tips
If the engine does not start, replace the ECM.
| A |
|
END |
| B |
|
REPLACE ECM Click here |