SFI SYSTEM(w/ Canister Pump Module), Diagnostic DTC:P02351C, P02391C

DTC Code DTC Name
P02351C Turbocharger/Supercharger Boost Sensor "A" Circuit Voltage Out of Range
P02391C Turbocharger/Supercharger Boost Sensor "B" Circuit Voltage Out of Range

DESCRIPTION

Refer to DTC P023511.

Click here

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P02351C Turbocharger/Supercharger Boost Sensor "A" Circuit Voltage Out of Range The discrepancy between the air volume estimated from the No. 1 turbo pressure sensor (bank 1) and the mass air flow meter output value equals or exceeds the threshold value.

  • No. 3 turbo pressure sensor (intake air temperature sensor)

  • No. 1 turbo pressure sensor (bank 1)

  • Mass air flow meter sub-assembly

  • Vacuum sensor assembly (bank 1)

  • Wire harness or connector

  • ECM

 - DTC stored SAE: P0236
P02391C Turbocharger/Supercharger Boost Sensor "B" Circuit Voltage Out of Range The discrepancy between the air volume estimated from the No. 1 turbo pressure sensor (bank 2) and the mass air flow meter output value equals or exceeds the threshold value.

  • No. 3 turbo pressure sensor (intake air temperature sensor)

  • No. 1 turbo pressure sensor (bank 2)

  • Mass air flow meter sub-assembly

  • Vacuum sensor assembly (bank 2)

  • Wire harness or connector

  • ECM

 - DTC stored SAE: P0240

MONITOR DESCRIPTION

If the discrepancy between the air volume estimated from the No. 1 turbo pressure sensor and the mass air flow meter output value equals or exceeds the threshold value, the ECM stores a DTC.

CONFIRMATION DRIVING PATTERN

B006EE7E02

  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 and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher [A].

  7. Accelerate to 50 km/h (31 mph) or more with the accelerator pedal fully depressed [B].

    CAUTION:

    When performing the confirmation driving pattern, obey all speed limits and traffic laws.

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

  9. Read the pending DTCs.

    Tech Tips


    • 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: P02351C or P02391C.

  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

    Tech Tips


    • 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, perform steps [B] and [C] again.

WIRING DIAGRAM

Refer to DTC P010012 for the mass air flow meter sub-assembly circuit.

Click here

Refer to DTC P007A11 for intake air temperature sensor (No. 3 turbo pressure sensor) circuit.

Click here

Refer to DTC P023511 for No. 1 turbo pressure sensor circuit.

Click here

Refer to DTC P012A11 for the vacuum sensor assembly circuit.

Click here

CAUTION / NOTICE / HINT

Tech Tips


  • Read Freeze Frame Data using the GTS. The ECM records vehicle and driving condition information as Freeze Frame Data the moment a DTC is stored. When troubleshooting, Freeze Frame Data can help determine if the vehicle was moving or stationary, 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.

  • Bank 1 refers to the bank that includes the No. 1 cylinder*.

    *: The No. 1 cylinder is the cylinder which is farthest from the transmission.

  • Bank 2 refers to the bank that does not include the No. 1 cylinder.

    DTC Suspected Area
    P02351C Bank 1
    P02391C Bank 2

PROCEDURE


  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P02351C OR P02391C)


    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 / Trouble Codes.

    5. Read the DTCs.


      Powertrain > Engine > Trouble Codes
      Result
      Result Proceed to
      DTC P02351C or P02391C is output A
      DTC P02351C or P02391C and other DTCs are output B

      Tech Tips

      If any DTCs other than P02351C or P02391C are output, troubleshoot those DTCs first.


    B

    GO TO DTC CHART Click here

    A

  2. READ VALUE USING GTS (ATMOSPHERIC PRESSURE)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Enter the following menus: Powertrain / Engine / Data List / Atmospheric Pressure.


      Powertrain > Engine > Data List
      Tester Display
      Atmospheric Pressure

    4. Using the table, read the normal atmospheric pressure value for the applicable altitude and temperature.

      B006GU5

      Tech Tips


      • Standard atmospheric pressure is approximately 101 kPa(abs) (15 psi(abs)).

      • For every 100 m (328 ft.) increase in altitude, atmospheric pressure drops by approximately 1 kPa (0.15 psi). This varies by weather.

    5. Compare the Atmospheric pressure value in the Data List with the normal atmospheric value from the table.

      Result
      Result Proceed to
      Other than the following A
      Difference between Atmospheric Pressure in the Data List and normal atmospheric pressure value is 10 kPa (1.45 psi) or more. B

    B

    REPLACE ECM Click here

    A

  3. READ VALUE USING GTS (INTAKE AIR TEMPERATURE B1S1 (TURBO))


    1. Remove the No. 3 turbo pressure sensor.

      Tech Tips

      Do not disconnect the connector.

    2. Connect the GTS to the DLC3.

    3. Turn the engine switch on (IG).

    4. Turn the GTS on.

    5. Enter the following menus: Powertrain / Engine / Data List / Intake Air Temperature B1S1 (Turbo).


      Powertrain > Engine > Data List
      Tester Display
      Intake Air Temperature B1S1 (Turbo)

    6. Read the value displayed on the GTS.

      Result
      Result Proceed to
      Other than the following A
      Difference between Intake Air Temperature B1S1 (Turbo) in the Data List and actual outside air temperature value is 10°C (18°F) or more. B

    B

    INSPECT NO. 3 TURBO PRESSURE SENSOR (INTAKE AIR TEMPERATURE SENSOR) Click here

    A

  4. READ VALUE USING GTS (MAF SENSOR)


    1. Connect the GTS to the DLC3.

    2. Start the engine.

    3. Turn the GTS on.

    4. Allow the engine to idle until Coolant Temperature reaches 75°C (167°F) or higher.

    5. Enter the following menus: Powertrain / Engine / Data List / MAF Sensor Bank1 and MAF Sensor Bank2.


      Powertrain > Engine > Data List
      Tester Display
      MAF Sensor Bank1
      MAF Sensor Bank2

    6. Read Mass Air Flow Sensor with the engine speed at 3000 rpm.

      Standard
      GTS Display Condition Specified Condition
      MAF Sensor Bank1

      Engine warmed up

      Park (P) selected

      A/C: Off

      Engine Speed: 3000 rpm

      		 Between 6.5 and 30.0 gm/sec
      MAF Sensor Bank2 Between 6.5 and 30.0 gm/sec
      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR Click here

    OK

  5. INSPECT NO. 1 TURBO PRESSURE SENSOR


    1. Inspect the No. 1 turbo pressure sensor.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR Click here

    OK

  6. INSPECT VACUUM SENSOR ASSEMBLY


    1. Inspect the vacuum sensor assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR Click here

    OK

  7. CHECK INTAKE SYSTEM


    1. Check that there is no air suction or blockage at any points in the intake system.

      Click here

      OK
      No air suction or blockage.

      Tech Tips

      Perform "Inspection After Repair" after repairing or replacing the intake system.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE INTAKE SYSTEM

    OK

  8. CLEAR DTC


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Clear the DTCs.


      Powertrain > Engine > Clear DTCs

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

      Result
      Proceed to
      NEXT

    NEXT

  9. CHECK WHETHER DTC OUTPUT RECURS (DTC P02351C OR P02391C)


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

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


      Powertrain > Engine > Utility
      Tester Display
      All Readiness

    3. Input the DTC: P02351C or P02391C.

    4. Check the DTC judgment result.

      Result
      Result Proceed to

      NORMAL

      (DTCs are not output)

      		 A

      ABNORMAL

      (DTC P02351C or P02391C is output)

      		 B

    A

    END

    B

  10. REPLACE NO. 1 TURBO PRESSURE SENSOR


    1. Replace the No. 1 turbo pressure sensor.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  11. CLEAR DTC


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Clear the DTCs.


      Powertrain > Engine > Clear DTCs

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

      Result
      Proceed to
      NEXT

    NEXT

  12. CHECK WHETHER DTC OUTPUT RECURS (DTC P02351C OR P02391C)


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

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


      Powertrain > Engine > Utility
      Tester Display
      All Readiness

    3. Input the DTC: P02351C or P02391C.

    4. Check the DTC judgment result.

      Result
      Result Proceed to

      NORMAL

      (DTCs are not output)

      		 A

      ABNORMAL

      (DTC P02351C or P02391C is output)

      		 B

    A

    END

    B

    REPLACE ECM Click here

  13. CHECK HARNESS AND CONNECTOR


    1. Disconnect the vacuum sensor assembly 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
      D44-3 (VC) - D44-1 (E2) Engine switch on (IG) 4.5 to 5.5 V
      D45-3 (VC2) - D45-1 (E22) Engine switch on (IG) 4.5 to 5.5 V
      D44-2 (PIC) - D44-1 (E2) Engine switch on (IG) 3.0 to 5.5 V
      D45-2 (PIC2) - D45-1 (E22) 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 Condition Specified Condition
      D44-3 (VC) - D44-2 (PIC) Engine switch off 171 to 189 kΩ
      D45-3 (VC2) - D45-2 (PIC2) Engine switch off 171 to 189 kΩ
      D44-1 (E2) - Body ground Always Below 1 Ω
      D45-1 (E22) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE VACUUM SENSOR ASSEMBLY Click here

    NG

  14. CHECK HARNESS AND CONNECTOR (VACUUM SENSOR ASSEMBLY - ECM)


    1. Disconnect the vacuum sensor assembly 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
      D44-3 (VC) - D1-96 (VCPR) Always Below 1 Ω
      D44-2 (PIC) - D1-124 (PIC) Always Below 1 Ω
      D44-1 (E2) - D1-97 (EPR) Always Below 1 Ω
      D45-3 (VC2) - D1-96 (VCPR) Always Below 1 Ω
      D45-2 (PIC2) - D1-123 (PIC2) Always Below 1 Ω
      D45-1 (E22) - D1-97 (EPR) Always Below 1 Ω
      D44-3 (VC) or D1-96 (VCPR) - Body ground and other terminals Always 10 kΩ or higher
      D44-2 (PIC) or D1-124 (PIC) - Body ground and other terminals Always 10 kΩ or higher
      D45-3 (VC2) or D1-96 (VCPR) - Body ground and other terminals Always 10 kΩ or higher
      D45-2 (PIC2) or D1-123 (PIC2) - 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

  15. CHECK HARNESS AND CONNECTOR


    1. Disconnect the No. 1 turbo pressure 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 Condition Specified Condition
      D28-3 (VC) - D28-1 (E2) Engine switch on (IG) 4.5 to 5.5 V
      D30-3 (VC2) - D30-1 (E22) Engine switch on (IG) 4.5 to 5.5 V
      D28-2 (PTA) - D28-1 (E2) Engine switch on (IG) 3.0 to 5.5 V
      D30-2 (PTA2) - D30-1 (E22) 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 Condition Specified Condition
      D28-3 (VC) - D28-2 (PTA) Engine switch off 171 to 189 kΩ
      D30-3 (VC2) - D30-2 (PTA2) Engine switch off 171 to 189 kΩ
      D28-1 (E2) - Body ground Always Below 1 Ω
      D30-1 (E22) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE NO. 1 TURBO PRESSURE SENSOR Click here

    NG

  16. CHECK HARNESS AND CONNECTOR (NO. 1 TURBO PRESSURE SENSOR - ECM)


    1. Disconnect the No. 1 turbo pressure 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
      D28-3 (VC) - D1-96 (VCPR) Always Below 1 Ω
      D28-2 (PTA) - D1-126 (PTA) Always Below 1 Ω
      D28-1 (E2) - D1-97 (EPR) Always Below 1 Ω
      D30-3 (VC2) - D1-96 (VCPR) Always Below 1 Ω
      D30-2 (PTA2) - D1-125 (PTA2) Always Below 1 Ω
      D30-1 (E22) - D1-97 (EPR) Always Below 1 Ω
      D28-3 (VC) or D1-96 (VCPR) - Body ground and other terminals Always 10 kΩ or higher
      D28-2 (PTA) or D1-126 (PTA) - Body ground and other terminals Always 10 kΩ or higher
      D30-3 (VC2) or D1-96 (VCPR) - Body ground and other terminals Always 10 kΩ or higher
      D30-2 (PTA2) or D1-125 (PTA2) - 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

  17. CHECK HARNESS AND CONNECTOR


    1. Disconnect the mass air flow meter sub-assembly 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
      D17-3 (VCCR) - D17-2 (E2GR) Engine switch on (IG) 4.8 to 5.2 V
      D17-1 (FGR) - D17-2 (E2GR) Engine switch on (IG) 4.8 to 5.2 V
      D16-3 (VCC) - D16-2 (E2G) Engine switch on (IG) 4.8 to 5.2 V
      D16-1 (FG) - D16-2 (E2G) Engine switch on (IG) 4.8 to 5.2 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 Condition Specified Condition
      D17-3(VCCR) - D17-1(FGR) Engine switch off 2.09 to 2.31 kΩ
      D16-3(VCC) - D16-1(FG) Engine switch off 2.09 to 2.31 kΩ
      D17-2(E2GR) - Body ground Always Below 1 Ω
      D16-2(E2G) - Body ground Always Below 1 Ω

      Tech Tips

      Perform "Inspection After Repair" after replacing the mass air flow meter sub-assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE MASS AIR FLOW METER SUB-ASSEMBLY Click here

    NG

  18. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY - ECM)


    1. Disconnect the mass air flow meter sub-assembly 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
      D17-3 (VCCR) - D1-107 (VCVG) Always Below 1 Ω
      D17-1 (FGR) - D1-82 (VG) Always Below 1 Ω
      D17-2 (E2GR) - D1-84 (E2G) Always Below 1 Ω
      D16-3 (VCC) - D1-107 (VCVG) Always Below 1 Ω
      D16-1 (FG) - D1-80 (VG2) Always Below 1 Ω
      D16-2 (E2G) - D1-84 (E2G) Always Below 1 Ω
      D17-3 (VCCR) or D1-107 (VCVG) - Body ground and other terminals Always 10 kΩ or higher
      D17-1 (FGR) or D1-82 (VG) - Body ground and other terminals Always 10 kΩ or higher
      D16-3 (VCC) or D1-107 (VCVG) - Body ground and other terminals Always 10 kΩ or higher
      D16-1 (FG) or D1-80 (VG2) - 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

  19. INSPECT NO. 3 TURBO PRESSURE SENSOR (INTAKE AIR TEMPERATURE SENSOR)


    1. Inspect the No. 3 turbo pressure sensor (intake air temperature sensor).

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE NO. 3 TURBO PRESSURE SENSOR Click here

    OK

  20. CHECK HARNESS AND CONNECTOR (NO. 3 TURBO PRESSURE SENSOR - ECM)


    1. Disconnect the No. 3 turbo pressure 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
      D11-4 (THIM) - D1-103 (THIM) Always Below 1 Ω
      D11-2 (E2) - D1-104 (EPIM) Always Below 1 Ω
      D11-4 (THIM) or D1-103 (THIM) - 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