P0392

3UR-FE ENGINE CONTROL: SFI SYSTEM: P0365: Camshaft Position Sensor "B" Circuit (Bank 1)

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

The exhaust camshaft Variable Valve Timing (VVT) sensor (EV1, 2 signal) consists of a magnet and MRE (Magnetic Resistance Element).
The exhaust camshaft has 3 teeth on its outer circumference. When the exhaust camshaft rotates, changes occur in the air gaps between the 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 into pulse signals, uses the pulse signals to determine the camshaft angle, and sends it to the ECM.





- Reference: Inspection using an oscilloscope





Standard:





HINT: EV1+ and EV2+ stand for the VVT sensor (for exhaust side) signal, and NE+ stands for the CKP sensor signal.

MONITOR DESCRIPTION

If no signal is transmitted by the VVT sensor despite the engine revolving, or the rotations of the camshaft and the crankshaft are not synchronized, the ECM interprets this as a malfunction of the sensor.

MONITOR STRATEGY





TYPICAL ENABLING CONDITIONS

All:





Chattering, Low voltage, High voltage:





P0365, P0390 (Engine running):





P0365, P0390 (Cranking):





TYPICAL MALFUNCTION THRESHOLDS

P0365, P0390 (Chattering):





P0367, P0392 (Low voltage):





P0368, P0393 (High voltage):





P0365, P0390 (Engine running, Cranking):





COMPONENT OPERATING RANGE





WIRING DIAGRAM





INSPECTION PROCEDURE
HINT: Read freeze frame data using the 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.

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (SENSOR POWER SOURCE)




(a) Disconnect the C22 or C23 VVT sensor (for exhaust side) connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (VVT SENSOR (for Exhaust Side) - ECM)




(a) Disconnect the C22 or C23 VVT (for exhaust side) sensor connector.
(b) Disconnect the C53 ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
3. CHECK SENSOR INSTALLATION (VVT SENSOR)




(a) Check the VVT sensor (for exhaust side) installation.
OK:
Sensor is installed correctly.
NG -- SECURELY REINSTALL SENSOR
OK -- Continue to next step.
4. CHECK EXHAUST CAMSHAFT
(a) Check the teeth of the camshaft.
OK:
Teeth do not have any cracks or deformation.
NG -- REPLACE EXHAUST CAMSHAFT
OK -- Continue to next step.
5. REPLACE VVT SENSOR (for Exhaust Side)
(a) Replace the VVT sensor (for exhaust side) Removal.
NEXT -- Continue to next step.
6. CHECK WHETHER DTC OUTPUT RECURS
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Clear DTCs DTC Check / Clear.
(e) Start the engine.
(f) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
(g) Read DTCs.

Result





HINT: If the engine does not start, replace the ECM.

B -- REPLACE ECM
A -- END