DTC    P0340    Camshaft Position Sensor "A" Circuit (Bank 1 or Single Sensor)

DTC    P0344    Camshaft Position Sensor "A" Circuit Intermittent (Bank 1 or Single Sensor)

for Preparation Click here


DESCRIPTION

The camshaft position sensor is installed on the cylinder head cover. The camshaft has a timing rotor for the camshaft position sensor. When the camshaft rotates, the tooth on the camshaft passes through the camshaft position sensor. The generated voltage in the sensor acts as a signal. The ECM locates each cylinder position based on the combination of this signal and crankshaft position sensor output.

P0340 
DTC Detection Drive Pattern
DTC Detection Condition
Trouble Area
Engine cranks 4 revolutions or more.
Either of following conditions is met:
  1. No camshaft position sensor signal to ECM
  2. Phase deviation in crankshaft and camshaft position sensor signals
(1 trip detection logic)
  1. Open or short in camshaft position sensor circuit
  2. Camshaft position sensor
  3. Camshaft assembly
  4. ECM

P0344 
DTC Detection Drive Pattern
DTC Detection Condition
Trouble Area
Engine cranks 6 revolutions or more.
Wrong pattern of signal from sensor is detected
(1 trip detection logic)
  1. Open or short in camshaft position sensor circuit
  2. Camshaft position sensor
  3. Camshaft assembly
  4. Valve timing
  5. ECM

WIRING DIAGRAM

Refer to DTC P0335 (Click here).

INSPECTION PROCEDURE

NOTICE:
When replacing the ECM, the ECM needs Registration and Initialization (Click here).

HINT:
  1. When the ECM must be replaced, before replacing the ECM, perform the "Learning Values Save" function using the intelligent tester. Then after installing the new ECM, perform all of the initializations/registrations for the "Learning Values Write" function by following the instructions shown on the tester display.
  2. 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, and other data from the time the malfunction occurred.

1.INSPECT CAMSHAFT POSITION SENSOR


    A199029E01

  1. Disconnect the camshaft position sensor connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    1 - 2
    		20°C (68°F)
    		950 to 1250 Ω

    Text in Illustration 
    *1
    		Component without harness connected
    (Camshaft Position sensor)

  1. Reconnect the camshaft position sensor connector.



NG
Go to step 7
OK


2.CHECK HARNESS AND CONNECTOR (CAMSHAFT POSITION SENSOR - ECM)

  1. Disconnect the camshaft position sensor connector.



    A199030E02

  1. Disconnect the ECM connector.

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

    Standard Resistance (Check for Open):
    Tester Connection
    		Condition
    		Specified Condition
    B29-1 - B9-11 (G+)
    		Always
    		Below 1 Ω
    B29-2 - B9-10 (G-)
    		Always
    		Below 1 Ω

    Standard Resistance (Check for Short):
    Tester Connection
    		Condition
    		Specified Condition
    B29-1 or B9-11 (G+) - Body ground
    		Always
    		10 kΩ or higher
    B29-2 or B9-10 (G-) - Body ground
    		Always
    		10 kΩ or higher

    Text in Illustration 
    *1
    		Front view of wire harness connector
    (to Camshaft Position sensor)
    *2
    		Front view of wire harness connector
    (to ECM)

  1. Reconnect the camshaft position sensor.

  1. Reconnect the ECM connector.



NG
Go to step 8
OK


3.CHECK SENSOR INSTALLATION (CAMSHAFT POSITION SENSOR)


    A122684E01

  1. Check the camshaft position sensor installation.

    OK:
    Sensor is installed correctly.



NG
Go to step 9
OK


4.CHECK CAMSHAFT ASSEMBLY (TIMING ROTOR)

  1. Check the timing rotor of the camshaft assembly.

    OK:
    Camshaft timing rotor does not have any cracks or deformation.



NG
Go to step 10
OK


5.ADJUST VALVE TIMING

  1. Adjust the valve timing (Click here).


NEXT


6.CHECK WHETHER DTC OUTPUT RECURS (DTC P0340 AND/OR P0344)

  1. Connect the intelligent tester to the DLC3.

  1. Clear the DTCs (Click here).

  1. Start the engine.

  1. Enter the following menus: Powertrain / Engine and ECT / DTC.

  1. Read the DTCs.
    Result 
    Result
    		Proceed to
    DTC P0340 and/or P0344
    		A
    No DTC output
    		B



B
END
A


7.REPLACE CAMSHAFT POSITION SENSOR

  1. Replace camshaft position sensor (Click here).



NEXT
Go to step 11

8.REPAIR OR REPLACE HARNESS OR CONNECTOR


NEXT
Go to step 11

9.SECURELY REINSTALL SENSOR

  1. Securely reinstall sensor (Click here).



NEXT
Go to step 11

10.REPLACE CAMSHAFT ASSEMBLY

  1. Replace the camshaft assembly (Click here).


NEXT


11.CHECK WHETHER DTC OUTPUT RECURS (DTC P0340 AND/OR P0344)

  1. Connect the intelligent tester to the DLC3.

  1. Clear the DTCs (Click here).

  1. Start the engine.

  1. Enter the following menus: Powertrain / Engine and ECT / DTC.

  1. Read the DTCs.
    Result 
    Result
    		Proceed to
    DTC P0340 and/or P0344
    		A
    No DTC output
    		B



B
END
A


12.REPLACE ECM

  1. Replace the ECM (Click here).


NEXT


13.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

  1. Connect the intelligent tester to the DLC3.

  1. Clear the DTCs (Click here).

  1. Start the engine.

  1. Enter the following menus: Powertrain / Engine and ECT / DTC.

  1. Confirm that the DTC is not output again.


NEXT

END