SFI SYSTEM(w/o Canister Pump Module), Diagnostic DTC:P1340

DESCRIPTION

The camshaft position sensor system consists of a signal plate (installed on the camshaft timing intake gear assembly (bank 2)) and Magnetic Resistance Element (MRE) type camshaft position sensor. The signal plate has 3 protrusions. When it rotates, the magnetic vector (direction of magnetic field) applied to the camshaft's magnetic resistance element varies, which causes its resistance to vary. This varying resistance is converted to voltage, and then modified into a rectangular waveform with Hi (approximately 4 V) and Lo (approximately 1 V) outputs. As a result, the G2 signal is output to the ECM. The ECM uses the G2 signal to distinguish between the cylinders and detect the camshaft position.

• 

  *a	5 V/DIV.
  *b	20 ms./DIV.

• Reference: Inspection using an oscilloscope.

  Tech Tips

  
  

  • The correct waveform is as shown.

  • The wavelength becomes shorter as the engine speed increases.

  ECM Terminal Name	Between G2+ and G2-
  Tester Range	5 V/DIV., 20 ms./DIV.
  Condition	Idling with warm engine

MONITOR DESCRIPTION

If no pulse signal is transmitted by the camshaft position sensor despite the camshaft rotating, or the rotation of the camshaft and the crankshaft is not synchronized, the ECM interprets this as a malfunction of the sensor.

MONITOR STRATEGY

CONFIRMATION DRIVING PATTERN

1. Connect the GTS to the DLC3.

2. Turn the engine switch on (IG).

3. Turn the GTS on.

4. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

   Click here

5. Turn the engine switch off and wait for at least 30 seconds.

6. Turn the engine switch on (IG).

7. Turn the GTS on.

8. Start the engine.

9. Idle the engine for 10 seconds or more [A].

10. Enter the following menus: Powertrain / Engine / Trouble Codes.

11. Read the pending DTC [B].

    Tech Tips

    
    

    • If a pending DTC is output, the system is malfunctioning.

    • If a pending DTC is not output, perform the following procedure.

12. Enter the following menus: Powertrain / Engine / Utility / All Readiness.

13. Input the DTC: P1340.

14. Check the DTC judgment result.

    GTS Display	Description
    NORMAL	DTC judgment completed System normal
    ABNORMAL	DTC judgment completed System abnormal
    INCOMPLETE	DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions
    N/A	Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

    Tech Tips

    
    

    • If the judgment result shows ABNORMAL, the system has a malfunction.

    • If the judgment result shows NORMAL, the system is normal.

    • If the judgment result shows INCOMPLETE or N/A, perform steps [A] and [B] again.

WIRING DIAGRAM

Refer to P0335.

Click here

CAUTION / NOTICE / HINT

PROCEDURE

1. CHECK HARNESS AND CONNECTOR

   

   *a	Front view of wire harness connector (to Camshaft Position Sensor)

   
   

   1. Disconnect the camshaft position sensor connector.

   2. Turn the engine switch on (IG).

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition G66-3 (VC) - Body ground Engine switch on (IG) 4.5 to 5.5 V G66-1 (G22+) - Body ground Engine switch on (IG) 3.0 to 5.5 V

   4. Turn the engine switch off and wait for at least 30 seconds.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition G66-3(VC) - G66-1(G22+) IG OFF 1.425 to 1.575 kΩ G66-2(G22-) - Body ground Always Below 1 Ω

      Result
      Proceed to OK NG

   
   

   NG

   CHECK HARNESS AND CONNECTOR (CAMSHAFT POSITION SENSOR - ECM) Click here

   OK

2. CHECK CHECK SENSOR INSTALLATION AND CONDUCT VISUAL INSPECTION (CAMSHAFT POSITION SENSOR)

   

   *a	OK
   *b	NG
   *c	Clearance

   
   

   1. Visually check the camshaft position sensor for damage.

   2. Check the camshaft position sensor installation.

      OK
      The camshaft position sensor does not have any damage and is installed properly.

      Result
      Proceed to OK NG

   
   

   NG

   SECURELY REINSTALL CAMSHAFT POSITION SENSOR Click here

   OK

3. INSPECT CAMSHAFT TIMING INTAKE GEAR ASSEMBLY RH (BANK 2)

   
   

   1. Check the teeth of the sensor plate, and check that the sensor plate is correctly installed.

      OK
      Sensor plate teeth do not have any cracks or deformation, and sensor plate is correctly installed.

      Tech Tips

      Perform "Inspection After Repair" after repairing or replacing the camshaft timing intake gear assembly RH (bank 2).

      Click here

      Result
      Proceed to OK NG

   
   

   NG

   REPLACE CAMSHAFT TIMING INTAKE GEAR ASSEMBLY RH (BANK 2) Click here

   OK

4. CHECK VALVE TIMING (CHECK FOR LOOSE AND JUMPED TEETH ON TIMING CHAIN)

   Result
   Proceed to OK NG

   

   *a	Timing Mark	*b	Approximately 68°
   *c	Approximately 16°	*d	Approximately 32°
   *e	Approximately 50°	-	-

   
   

   1. Remove the cylinder head cover sub-assembly.

      Click here

   2. Turn the crankshaft pulley, and align its groove with the timing mark "0" of the timing chain cover.

   3. Check that the timing marks of the camshaft timing intake gear assemblies and camshaft timing exhaust gear assemblies are at the positions shown in the illustration.

      OK
      The timing marks on the camshaft timing gears are aligned as shown in the illustration.

      Tech Tips

      
      

      • If the result is not as specified, check for mechanical malfunctions that may have affected the valve timing, such as a jumped tooth or stretching of the timing chain.

      • When checking the valve timing, make sure the camshaft timing intake gear assemblies are set to the most retarded position and the camshaft timing exhaust gear assemblies are set to the most advanced position. When the VVT system is normal and the engine is stopped, the camshaft timing intake gear assemblies stop at the center of their operation range and the camshaft timing exhaust gear assemblies stop at the most advanced position.

      Result
      Proceed to OK NG

   
   

   OK

   REPLACE CAMSHAFT POSITION SENSOR Click here

   NG

5. CHECK ENGINE MECHANICAL SYSTEM

   
   

   1. Check for mechanical malfunctions that affect the valve timing, such as a jumped tooth or stretching of the timing chain.

      Click here

      Result
      Proceed to OK NG

   
   

   OK

   CHECK FOR INTERMITTENT PROBLEMS Click here

   NG

   REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

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

   
   

   1. Disconnect the VVT sensor (for intake camshaft) connectors.

   2. Disconnect the ECM connector.

   3. Disconnect the crankshaft position sensor connector.

   4. Disconnect the VVT sensor (for exhaust camshaft) connectors.

   5. Disconnect the camshaft position sensor connector.

   6. Disconnect the canister pump module connector.

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

      Standard Resistance

      Tester Connection Condition Specified Condition G66-3 (VC) - G42-90 (VC) Always Below 1 Ω G66-1 (G22+) - G42-133 (G2+) Always Below 1 Ω G66-2 (G22-) - G42-101 (G2-) Always Below 1 Ω G66-3 (VC) or G42-90 (VC) - Body ground and other terminals Always 10 kΩ or higher G66-1 (G22+) or G42-133 (G2+) - Body ground and other terminals Always 10 kΩ or higher G66-2 (G22-) or G42-101 (G2-) - Body ground and other terminals Always 10 kΩ or higher

      Result
      Proceed to OK NG

   
   

   OK

   REPLACE ECM Click here

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR