SFI SYSTEM(w/ Canister Pump Module), Diagnostic DTC:P0340, P0342, P0343, P0345, P0347, P0348

DESCRIPTION

The VVT sensors use a timing rotor (installed on each camshaft) and a Magnetic Resistance Element (MRE) type VVT sensor. The timing rotor (camshaft) has 3 protrusions. When it rotates, the magnetic vector (direction of magnetic field) applied to the VVT sensor 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 actual camshaft position is detected and the position is output to the ECM.

• 

  Table 1.

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

  Reference: Inspection using an oscilloscope.

  Tip:
  

  • The correct waveform is as shown.

  • The wavelength becomes shorter as the engine speed increases.

  ECM Terminal Name	Between VV1+ and VV1- Between VV2+ and VV2-
  Tester Range	5 V/DIV., 20 ms./DIV.
  Condition	Idling with warm engine

MONITOR DESCRIPTION

If no pulse signal is transmitted by the VVT sensor (for intake camshaft) 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.

Also, when the sensor output voltage remains at less than 0.3 V, or higher than 4.7 V for 4 seconds, the ECM stores a DTC.

MONITOR STRATEGY

CONFIRMATION DRIVING PATTERN

1. Connect the GTS to the DLC3.

2. Turn the engine switch on (IG) and turn the GTS on.

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

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

5. Turn the engine switch on (IG) and turn the GTS on.

6. Start the engine.

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

8. Enter the following menus: Powertrain / Engine / Trouble Codes [B].

9. Read the pending DTCs.

   Tip:
   

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

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

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

11. Input the DTC: P0340, P0342, P0343, P0345, P0347 or P0348.

12. 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

    Tip:
    

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

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

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

WIRING DIAGRAM

Refer to DTC P0335.

Click here

CAUTION / NOTICE / HINT

PROCEDURE

1. *a Front view of wire harness connector (to VVT Sensor (for Intake Camshaft)) *b Bank 1 *c Bank 2
   Click here

   CHECK TERMINAL VOLTAGE (POWER SOURCE OF VVT SENSOR (FOR INTAKE CAMSHAFT))

   
   

   1. Disconnect the VVT sensor (for intake camshaft) 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 Condition Specified Condition F22-3 (VC) - Body ground Engine switch on (IG) 4.5 to 5.5 V F28-3 (VC) - Body ground Engine switch on (IG) 4.5 to 5.5 V

      Result
      Proceed to OK NG

   
   
   • OKClick here
   • NGClick here
2. Click here

   CHECK HARNESS AND CONNECTOR (VVT SENSOR (FOR INTAKE CAMSHAFT) - ECM)

   
   

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

   2. Disconnect the ECM connector.

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

      Standard Resistance

      Tester Connection Condition Specified Condition F22-1 (VVL+) - F1-19 (VV1+) Always Below 1 Ω F22-2 (VVL-) - F1-29 (VV1-) Always Below 1 Ω F28-1 (VVR+) - F1-20 (VV2+) Always Below 1 Ω F28-2 (VVR-) - F1-30 (VV2-) Always Below 1 Ω F22-1 (VVL+) or F1-19 (VV1+) - Body ground Always 10 kΩ or higher F22-2 (VVL-) or F1-29 (VV1-) - Body ground Always 10 kΩ or higher F28-1 (VVR+) or F1-20 (VV2+) - Body ground Always 10 kΩ or higher F28-2 (VVR-) or F1-30 (VV2-) - Body ground Always 10 kΩ or higher

      Result
      Proceed to OK NG

   
   
   • OKClick here
   • NG

     REPAIR OR REPLACE HARNESS OR CONNECTOR

3. *a Clearance
   Click here

   CHECK SENSOR INSTALLATION (VVT SENSOR (FOR INTAKE CAMSHAFT))

   
   

   1. Check the VVT sensor (for intake camshaft) installation.

      OK
      VVT sensor (for intake camshaft) is installed correctly.

      Result
      Proceed to OK NG

   
   
   • OKClick here
   • NG

     SECURELY REINSTALL VVT SENSOR (FOR INTAKE CAMSHAFT)Click here

4. Click here

   INSPECT INTAKE CAMSHAFT (TIMING ROTOR)

   
   

   1. Inspect the timing rotor of the intake camshaft.

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

      Tip:

      Perform "Inspection After Repair" after replacing the intake camshaft.

      Click here

      Result
      Proceed to OK NG

   
   
   • OKClick here
   • NG

     REPLACE INTAKE CAMSHAFTClick here

5. *a Timing Mark *b Approximately 68° *c Approximately 16° *d Approximately 32° *e Approximately 50° - -
   Click here

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

   Result
   Proceed to OK NG

   
   

   1. Remove the cylinder head covers.

   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 gears and camshaft timing exhaust gears are at the positions shown in the illustration.

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

      Tip:
      

      • 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 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 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

   
   
   • OKClick here
   • NGClick here
6. Click here

   REPLACE VVT SENSOR (FOR INTAKE CAMSHAFT)

   
   

   1. Replace the VVT sensor (for intake camshaft).

      Click here

      Result
      Proceed to NEXT

   
   
   • NEXTClick here
7. Click here

   CHECK WHETHER DTC OUTPUT RECURS (DTC P0340, P0342, P0343, P0345, P0347 OR P0348)

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the engine switch on (IG).

   3. Turn the GTS on.

   4. Clear the DTCs.

      Click here

      
      
      1. Powertrain > Engine > Clear DTCs
      2. 
         
      3. 
         

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

   6. Start the engine.

   7. Turn the GTS on.

   8. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.

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

   10. Read the pending DTCs.

       
       
       1. Powertrain > Engine > Trouble Codes
       2. 
          
       3. 
          

       Result
       Result Proceed to DTC P0340, P0342, P0343, P0345, P0347 or P0348 is output A DTCs are not output B

       Tip:

       If the engine does not start, replace the ECM.

   
   
   • A

     REPLACE ECMClick here

   • B

     END

8. Click here

   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.

      Result
      Proceed to OK NG

   
   
   • OKClick here
   • NG

     REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

9. Click here

   CHECK WHETHER DTC OUTPUT RECURS (DTC P0340, P0342, P0343, P0345, P0347 OR P0348)

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the engine switch on (IG).

   3. Turn the GTS on.

   4. Clear the DTCs.

      Click here

      
      
      1. Powertrain > Engine > Clear DTCs
      2. 
         
      3. 
         

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

   6. Start the engine.

   7. Turn the GTS on.

   8. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.

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

   10. Read the pending DTCs.

       
       
       1. Powertrain > Engine > Trouble Codes
       2. 
          
       3. 
          

       Result
       Result Proceed to DTC P0340, P0342, P0343, P0345, P0347 or P0348 is output A DTCs are not output B

   
   
   • A

     REPLACE ECMClick here

   • B

     CHECK FOR INTERMITTENT PROBLEMSClick here

10. Click here

    CHECK HARNESS AND CONNECTOR (VVT SENSOR (FOR INTAKE CAMSHAFT) - 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 F22-3 (VC) - F2-26 (VC) Always Below 1 Ω F28-3 (VC) - F2-26 (VC) Always Below 1 Ω F22-3 (VC), F28-3 (VC) or F2-26 (VC) - Body ground Always 10 kΩ or higher

       Result
       Proceed to OK NG

    
    
    • OK

      REPLACE ECMClick here

    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR