SFI SYSTEM(w/ Secondary Air Injection System), Diagnostic DTC:P0365, P0367, P0368, P0390, P0392, P0393

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 Variable Valve Timing (VVT) sensor (EV1, 2 signal) consists of a magnet and MRE (Magnetic Resistance Element).

The exhaust camshaft has a sensor plate with 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 magnet. 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.

DTC Code	DTC Detection Condition	Trouble Area
P0365 P0390	When either condition below is met: The input voltage to the ECM remains at below 0.3 V or higher than 4.7 V for more than 4 seconds when 2 or more seconds have elapsed after turning the engine switch on (IG) (1 trip detection logic). No VVT sensor signal is sent to the ECM during cranking (1 trip detection logic).	Open or short in VVT sensor (for exhaust side) circuit VVT sensor (for exhaust side) Exhaust camshaft Jumped tooth of timing chain ECM
P0367 P0392	The output voltage of the VVT sensor is below 0.3 V for 4 seconds (1 trip detection logic).	Open or short in VVT sensor (for exhaust side) circuit VVT sensor (for exhaust side) Exhaust camshaft Jumped tooth of timing chain ECM
P0368 P0393	The output voltage of the VVT sensor is higher than 4.7 V for 4 seconds (1 trip detection logic).	Open or short in VVT sensor (for exhaust side) circuit VVT sensor (for exhaust side) Exhaust camshaft Jumped tooth of timing chain ECM

DTC Code

DTC Detection Condition

Trouble Area

P0365

P0390

When either condition below is met:

The input voltage to the ECM remains at below 0.3 V or higher than 4.7 V for more than 4 seconds when 2 or more seconds have elapsed after turning the engine switch on (IG) (1 trip detection logic).
No VVT sensor signal is sent to the ECM during cranking (1 trip detection logic).

Open or short in VVT sensor (for exhaust side) circuit
VVT sensor (for exhaust side)
Exhaust camshaft
Jumped tooth of timing chain
ECM

P0367

P0392

The output voltage of the VVT sensor is below 0.3 V for 4 seconds (1 trip detection logic).

Open or short in VVT sensor (for exhaust side) circuit

VVT sensor (for exhaust side)

Exhaust camshaft

Jumped tooth of timing chain

ECM

P0368

P0393

The output voltage of the VVT sensor is higher than 4.7 V for 4 seconds (1 trip detection logic).

Open or short in VVT sensor (for exhaust side) circuit

VVT sensor (for exhaust side)

Exhaust camshaft

Jumped tooth of timing chain

ECM


*a	EV1, EV2 and NE Signal Waveforms
*b	5 V/DIV.
*c	20 msec./DIV.

Reference: Inspection using an oscilloscope.

Standard

Tester Connection

Tool Setting

Condition

Specified Condition

C45-66 (NE+) - C45-65 (NE-)

5 V/DIV.

20 msec./DIV.

Cranking or idling

The correct waveform is as shown

C45-90 (EV1+) - C45-88 (VV1-)

5 V/DIV.

20 msec./DIV.

Cranking or idling

The correct waveform is as shown

C45-113 (EV2+) - C45-111 (VV2-)

5 V/DIV.

20 msec./DIV.

Cranking or idling

The correct waveform is as shown

Tech Tips

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.

WIRING DIAGRAM


*a	VVT Sensor for Exhaust Side (for Bank 1)
*b	VVT Sensor for Exhaust Side (for Bank 2)

CAUTION / NOTICE / HINT

Tech Tips

Read freeze frame data using the intelligent tester. 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 HARNESS AND CONNECTOR (SENSOR POWER SOURCE)

Disconnect the C121 or C122 VVT sensor (for exhaust side) connector.

Measure the voltage according to the value(s) in the table below.

Standard Voltage

Tester Connection	Condition	Specified Condition
C121-3 (VC2) - Body ground	Engine switch on (IG)	4.5 to 5.0 V
C122-3 (VC2) - Body ground	Engine switch on (IG)	4.5 to 5.0 V

REPAIR OR REPLACE HARNESS OR CONNECTOR

CHECK HARNESS AND CONNECTOR (VVT SENSOR (for Exhaust Side) - ECM)

Disconnect the C121 or C122 VVT (for exhaust side) sensor connector.
Disconnect the C45 ECM connector.

Measure the resistance according to the value(s) in the table below.

Standard Resistance

Tester Connection	Condition	Specified Condition
C121-1 (EX+) - C45-90 (EV1+)	Always	Below 1 Ω
C121-2 (EX-) - C45-88 (VV1-)	Always	Below 1 Ω
C122-1 (EX+) - C45-113 (EV2+)	Always	Below 1 Ω
C122-2 (EX-) - C45-111 (VV2-)	Always	Below 1 Ω
C121-1 (EX+) or C45-90 (EV1+) - Body ground	Always	10 kΩ or higher
C121-2 (EX-) or C45-88 (VV1-) - Body ground	Always	10 kΩ or higher
C122-1 (EX+) or C45-113 (EV2+) - Body ground	Always	10 kΩ or higher
C122-2 (EX-) or C45-111 (VV2-) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

CHECK SENSOR INSTALLATION
1. *1 Clearance
  
  Check the VVT sensor (for exhaust side) installation.
  
  OK
  
  Sensor is installed correctly.
NG
SECURELY REINSTALL SENSOR Click here

OK
CHECK EXHAUST CAMSHAFT
1. 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 (for Exhaust Side)
1. Replace the VVT sensor (for exhaust side) Click here.
NEXT

*1	Clearance

OK
Sensor is installed correctly.

OK
Teeth do not have any cracks or deformation.

CHECK WHETHER DTC OUTPUT RECURS

Connect the intelligent tester to the DLC3.
Turn the engine switch on (IG).
Turn the tester on.
Clear DTCs Click here.
Start the engine.
Enter the following menus: Powertrain / Engine and ECT / DTC.

Read DTCs.

Result
Result	Proceed to
No output	A
P0365, P0367, P0368, P0390, P0392 or P0393	B

Tech Tips

If the engine does not start, replace the ECM.

END

REPLACE ECM Click here