СИСТЕМА SFI, Diagnostic DTC:P0335, P0337, P0338, P0339

DESCRIPTION

The crankshaft position sensor system consists of a crankshaft angle sensor rotor and Magnetoresistive Element (MRE) type sensor. The crankshaft angle sensor rotor has 34 teeth at 10° intervals (2 teeth are missing for detecting top dead center), and is installed to the rear end of the crankshaft. The crankshaft position sensor generates 34 signals per crankshaft revolution. The ECM uses the G2 signal to distinguish between the cylinders, and uses the NE signal to detect the crankshaft position and engine speed.

• 

  Reference: Inspection using an oscilloscope.

  Standard
  Tester Connection Tool Setting Condition Specified Condition C54-110 (NE+) - C54-111 (NE-) 5 V/DIV., 20 msec./DIV. Cranking or idling The correct waveform is as shown C54-90 (G2) - C54-89 (G2-) 5 V/DIV., 20 msec./DIV. Cranking or idling The correct waveform is as shown

  Tip:

  G2 is the camshaft position sensor signal, and NE is the crankshaft position sensor signal.

MONITOR DESCRIPTION

If there is no signal from the crankshaft position sensor despite the crankshaft revolving, the ECM interprets this as a malfunction of the sensor.

When the sensor output voltage remains at below 0.3 V, or higher than 4.7 V for more than 4 seconds, the ECM stores a DTC.

CONFIRMATION DRIVING PATTERN

1. Start the engine and run it at idle for 20 seconds or more.

INSPECTION PROCEDURE

PROCEDURE

1. Click here

   READ VALUE USING GTS (ENGINE SPEED)

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the engine switch on (IG).

   3. Turn the GTS on.

   4. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Engine Speed.

   5. Start the engine.

   6. Read the values displayed on the GTS while the engine is running.

      Standard
      Correct values are displayed.

      Tip:
      

      • To check the engine speed change, display the graph on the GTS.

      • If the engine does not start, check the engine speed while cranking.

      • If the engine speed indicated on the GTS remains zero (0), there may be an open or short in the Crankshaft Position sensor circuit.

   
   
   • OKClick here
   • NGClick here
2. Click here

   INSPECT CRANKSHAFT POSITION SENSOR (SENSOR POWER SOURCE)

   
   

   1. Disconnect the crankshaft position sensor connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition C1-3 (VC) - Body ground Engine switch on (IG) 4.5 to 5.0 V

      Table 1. Text in Illustration

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

   
   
   • OKClick here
   • NGClick here
3. Click here

   CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM)

   
   

   1. Disconnect the crankshaft position sensor 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 C1-1 (NE+) - C54-110 (NE+) Always Below 1 Ω C1-2 (NE-) - C54-111 (NE-) Always Below 1 Ω C1-1 (NE+) or C54-110 (NE+) - Body ground Always 10 kΩ or higher C1-2 (NE-) or C54-111 (NE-) - Body ground Always 10 kΩ or higher

   
   
   • OKClick here
   • NGClick here
4. Click here

   CHECK SENSOR INSTALLATION (CRANKSHAFT POSITION SENSOR)

   
   

   1. Check the crankshaft position sensor installation.

      OK
      Sensor is installed correctly.

   
   
   • OKClick here
   • NGClick here
5. Click here

   INSPECT CRANKSHAFT ANGLE SENSOR ROTOR (TEETH OF SENSOR ROTOR)

   
   

   1. Check the teeth of the sensor rotor.

      OK
      Sensor rotor does not have any cracks or deformation.

   
   
   • OKClick here
   • NGClick here
6. Click here

   REPLACE CRANKSHAFT POSITION SENSOR

   
   

   1. Replace the crankshaft position sensor (Click here).

   
   
   • NEXTClick here
7. Click here

   CHECK WHETHER DTC OUTPUT RECURS (DTC P0335, P0337, P0338 AND/OR P0339)

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the engine switch on (IG).

   3. Turn the GTS on.

   4. Clear DTCs (Click here).

   5. Start the engine.

   6. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

   7. Read DTCs.

      Table 2. Result

      Result	Proceed to
      No DTC is output	A
      P0335, P0337, P0338 or P0339 is output	B

      Tip:

      If the engine does not start, replace the ECM.

   
   
   • AClick here
   • BClick here
8. Click here

   CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM)

   
   

   1. Disconnect the crankshaft position sensor 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 C1-3 (VC) - C54-66 (VCV2) Always Below 1 Ω C1-3 (VC) or C54-66 (VCV2) - Body ground Always 10 kΩ or higher

   
   
   • OKClick here
   • NGClick here
9. Click here

   CHECK FOR INTERMITTENT PROBLEMSClick here

10. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

11. Click here

    SECURELY REINSTALL SENSORClick here

12. Click here

    REPLACE CRANKSHAFT ANGLE SENSOR ROTORClick here

13. Click here

    REPLACE ECMClick here

14. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

15. Click here

    END

16. Click here

    REPLACE ECMClick here