SFI SYSTEM(w/o Canister Pump Module), Diagnostic DTC:P007A11

DTC Code DTC Name
P007A11 Charge Air Cooler Temperature Sensor Bank 1 Circuit Short to Ground

DESCRIPTION

B005AHKE01

The intake air temperature sensor, mounted on the No. 1 turbo pressure sensor, monitors the intake air temperature. The intake air temperature sensor has a built-in thermistor with a resistance that varies according to the temperature of the intake air. When the intake air temperature is low, the resistance of the thermistor increases. When the temperature is high, the resistance drops. These variations in resistance are transmitted to the ECM as voltage changes (See Fig. 1).

The intake air temperature sensor is powered by a 5 V supply from the THIM terminal of the ECM, via resistor R.

Resistor R and the intake air temperature sensor are connected in series. When the resistance value of the intake air temperature sensor changes, according to changes in the intake air temperature, the voltage at terminal THIM also varies. Based on this signal, the ECM increases the fuel injection volume when the engine is cold to improve driveability.

Tech Tips

When DTC P007A11 or P007A15 is stored, the ECM enters fail-safe mode. During fail-safe mode, the intake air temperature is estimated to be 45°C (113°F) by the ECM. Fail-safe mode continues until a pass condition is detected.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P007A11 Charge Air Cooler Temperature Sensor Bank 1 Circuit Short to Ground The output voltage from the intake air temperature sensor is 0.1 V or less for 3 seconds or more (1 trip detection logic).

  • Short in intake air temperature sensor circuit

  • Intake air temperature sensor (built into No. 1 turbo pressure sensor)

  • ECM

 - DTC stored SAE: P007C

Tech Tips

When a DTC is output, check the Data List item "Intake Air Temperature B1S1 (Turbo)" using the GTS.

Click here

DTC No. Intake Air Temperature B1S1 (Turbo) Malfunction
P007A11 140°C (284°F) Short in THIM circuit to ground

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 intake manifold internal temperature from the intake air temperature sensor output voltage. If the intake air temperature sensor output voltage is outside the normal range, there may be a malfunction or open or short circuit in the intake air temperature sensor. In this case, the ECM stores a DTC.

Example:

When the sensor output voltage is 0.1 V or less for 3 seconds or more, the ECM stores DTC P007A11.

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. 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: P007A11.

  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
    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 NORMAL, the system is normal.

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

WIRING DIAGRAM

B0059L0E96
*a THIM
*b Intake Air Temperature Sensor (Built into No. 1 Turbo Pressure Sensor)

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.

PROCEDURE


  1. READ TURBO PRESSURE SENSOR NO.1 (CHECK FOR SHORT IN WIRE HARNESS)


    1. B005A7JC26
      *1 No. 1 turbo pressure sensor
      *2 ECM

      Disconnect the No. 1 turbo pressure sensor 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.

      Standard value
      -40°C (-40°F)
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE NO. 1 TURBO PRESSURE SENSOR Click here

    NG

  2. 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
      C27-4 (THIM) or C20-107 (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