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)

for Preparation Click here


DESCRIPTION

The exhaust camshaft's Variable Valve Timing (VVT) sensor (G signal) consists of a magnet and MRE 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 pickup coil, which affects the magnet. As a result, the resistance of the MRE material fluctuates. The VVT sensor converts the exhaust camshaft rotation data to pulse signals, and uses the pulse signals to determine the camshaft angle, which it sends to the ECM. Then the ECM uses this data to control fuel injection time and injection timing. The crankshaft angle sensor plate has 34 teeth. The pickup coil generates 34 signals for each engine revolution. Based the G signal and actual crankshaft angle, the ECM detects the normal crankshaft angle. Also, based on the NE signal, the ECM detects the engine speed.

DTC NO.
DTC Detection Condition
Trouble Area
P0365
P0390
  1. Input voltage to ECM remains 0.3 V or less, or 4.7 V or higher for more than 5 seconds, when 2 or more seconds have elapsed after turning engine switch on (IG)
    (1 trip detection logic)
  2. No VVT sensor signal to ECM during cranking
    (1 trip detection logic)
  1. Open or short in VVT sensor for exhaust camshaft circuit
  2. VVT sensor for exhaust camshaft
  3. Exhaust camshaft
  4. Jumped tooth of timing chain
  5. ECM
P0367
P0392
Output voltage of VVT sensor 0.3 V or less for 5 seconds
(1 trip detection logic)
  1. Open or short in VVT sensor for exhaust camshaft circuit
  2. VVT sensor for exhaust camshaft
  3. Exhaust camshaft
  4. Jumped tooth of timing chain
  5. ECM
P0368
P0393
Output voltage of VVT sensor 4.7 V or more for 5 seconds
(1 trip detection logic)
  1. Open or short in VVT sensor for exhaust camshaft circuit
  2. VVT sensor for exhaust camshaft
  3. Exhaust camshaft
  4. Jumped tooth of timing chain
  5. ECM
A107148E03
Reference: Inspection using an oscilloscope

HINT:
  1. The correct waveform is shown.
  2. EV1+ and EV2+ stand for the VVT sensor signal, and NE+ stands for the CKP 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 engine revolting, or the rotations of the camshaft and the crankshaft are not synchronized, the ECM interprets this as a malfunction of the sensor.

WIRING DIAGRAM

Refer to DTC P0335 on page Click here.

INSPECTION PROCEDURE

Read freeze frame data using the intelligent tester. Freeze frame data records the engine conditions when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was running or stopped, 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.
1.CHECK ECM TERMINAL VOLTAGE
A107709E04

  1. Inspect the ECM using an oscilloscope.

    1. While the engine is idling, check the waveform between the terminals of the ECM connector.

      Standard voltage:
      Tester Connection
      		Specified Condition
      EV1+ (E6-19) - EV1- (E6-18)
      		Correct waveform shown
      EV2+ (E45-13) - EV2- (E45-12)
      		Correct waveform shown
      NE+ (E8-32) - NE- (E8-31)
      		Correct waveform shown



NG
REPLACE VVT SENSOR
OK


2.CHECK VVT SENSOR (SENSOR POWER SOURCE)
A107149E07

  1. Disconnect the E56 or E62 VVT sensor connector.

  1. Measure the voltage between the terminals of the VVT sensor.

    Standard voltage:
    Tester Connection
    		Specified Condition
    VC2 (E56-3) - Body ground
    		4.5 to 5.0 V
    VC2 (E62-3) - Body ground
    		4.5 to 5.0 V

  1. Reconnect the VVT sensor connector.



NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK


3.CHECK HARNESS AND CONNECTOR (VVT SENSOR - ECM)
A108932E04

  1. Disconnect the E56 or E62 VVT sensor connector.

  1. Disconnect the E6 or E45 ECM connector.

  1. Measure the resistance.

    Standard resistance (Check for open):
    Tester Connection
    		Specified Condition
    EX+ (E56-1) - EV1+ (E6-19)
    		Below 1 Ω
    EX- (E56-2) - EV1- (E6-18)
    		Below 1 Ω
    EX+ (E62-1) - EV2+ (E45-13)
    		Below 1 Ω
    EX- (E62-2) - EV2- (E45-12)
    		Below 1 Ω

    Standard resistance (Check for short):
    Tester Connection
    		Specified Condition
    EX+ (E56-1) or EV1+ (E6-19) - Body ground
    		10 kΩ or higher
    EX- (E56-2) or EV1- (E6-18) - Body ground
    		10 kΩ or higher
    EX+ (E62-1) or EV2+ (E45-13) - Body ground
    		10 kΩ or higher
    EX- (E62-2) or EV2- (E45-12) - Body ground
    		10 kΩ or higher

  1. Reconnect the VVT sensor connector.

  1. Reconnect the ECM connector.



NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK


4.CHECK SENSOR INSTALLATION (VVT SENSOR OR EXHAUST CAMSHAFT)
BR03795E17

  1. Check the VVT sensor installation.

    OK:
    Sensor is installed correctly.



NG
SENSOR
OK


5.CHECK EXHAUST CAMSHAFT

  1. Check the teeth of the signal plate.



NG
REPLACE EXHAUST CAMSHAFT
OK

REPLACE ECM