SFI SYSTEM(w/ Canister Pump Module), Diagnostic DTC:P012A11, P237411

DTC Code DTC Name
P012A11 Turbocharger/Supercharger Inlet Pressure Sensor "A" Circuit Low Circuit Short to Ground
P237411 Turbocharger/Supercharger Inlet Pressure Sensor "B" Circuit Low Circuit Short to Ground

DESCRIPTION

The internal sensor in the vacuum sensor assembly detects the air inlet duct internal pressure as a voltage.

B006BKNE01
DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P012A11 Turbocharger/Supercharger Inlet Pressure Sensor "A" Circuit Low Circuit Short to Ground The output voltage from the vacuum sensor assembly (bank 1) is below 0.6 V for 3 seconds or more (1 trip detection logic).

  • Open or short in vacuum sensor assembly (bank 1) circuit

  • Vacuum sensor assembly (bank 1)

  • ECM

 - DTC stored SAE: P012C
P237411 Turbocharger/Supercharger Inlet Pressure Sensor "B" Circuit Low Circuit Short to Ground The output voltage from the vacuum sensor assembly (bank 2) is below 0.6 V for 3 seconds or more (1 trip detection logic).

  • Open or short in vacuum sensor assembly (bank 2) circuit

  • Vacuum sensor assembly (bank 2)

  • ECM

 - DTC stored SAE: P2376

Tech Tips

When a DTC is output, check the Data List item "Turbocharger/Supercharger Inlet Pressure Bank1 and Turbocharger/Supercharger Inlet Pressure Bank2" using the GTS.

Click here

DTC No. Turbocharger/Supercharger Inlet Pressure Bank1 or Turbocharger/Supercharger Inlet Pressure Bank2 Malfunction
P012A11 Approximately 0 kPa [0 psi]

  • Short in PIC circuit to ground

  • Short in PIC circuit to EPR circuit

  • Open in VCPR circuit
P237411

  • Short in PIC2 circuit to ground

  • Short in PIC2 circuit to EPR circuit

  • Open in VCPR circuit

If the Data List displays a normal value, the normal value may be due to a temporary recovery from the malfunction condition. Check for intermittent problems.

MONITOR DESCRIPTION

The ECM calculates the air inlet duct internal pressure from the vacuum sensor assembly output voltage. If the vacuum sensor assembly output voltage is not within the normal range, there may be a malfunction in the vacuum sensor assembly or an open or short circuit. In this case, the ECM stores a DTC.

Example:

When the sensor output voltage is below 0.6 V for 3 seconds or more, the ECM stores a DTC.

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 and wait 5 seconds or more.

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

  8. 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.

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

  10. Input the DTC: P012A11 or P237411.

  11. 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.

WIRING DIAGRAM

B006ABSE01
*a PIC
*b Vacuum Sensor Assembly (Bank 1)
*c Vacuum Sensor Assembly (Bank 2)

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
    P012A11 Bank 1
    P237411 Bank 2

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR

    Tech Tips

    Make sure that the connector is properly connected. If it is not, securely connect it and check for DTCs again.


    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
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE VACUUM SENSOR ASSEMBLY Click here

    NG

  2. 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
      D45-3 (VC2) - D1-96 (VCPR) Always Below 1 Ω
      D44-2 (PIC) or D1-124 (PIC) - 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