СИСТЕМА SFI, Diagnostic DTC:P00AC, P00AD, P0112, P0113

DTC Code DTC Name
P00AC Intake Air Temperature Sensor 1 Circuit Low Bank 2
P00AD Intake Air Temperature Sensor 1 Circuit High Bank 2
P0112 Intake Air Temperature Circuit Low Input
P0113 Intake Air Temperature Circuit High Input

DESCRIPTION

A01GJ30E26

DTC No. DTC Detection Condition Trouble Area
P00AC

Short in Intake Air Temperature (IAT) sensor 2 circuit for 0.5 seconds

(1 trip detection logic)


  • Short in IAT sensor 2 circuit

  • IAT sensor 2 (built into MAF meter)

  • ECM

P00AD

Open in Intake Air Temperature (IAT) sensor 2 circuit for 0.5 seconds

(1 trip detection logic)


  • Open in IAT sensor 2 circuit

  • IAT sensor 2 (built into MAF meter)

  • ECM

P0112

Short in Intake Air Temperature (IAT) sensor 1 circuit for 0.5 seconds

(1 trip detection logic)


  • Short in IAT sensor 1 circuit

  • IAT sensor 1 (built into MAF meter)

  • ECM

P0113

Open in Intake Air Temperature (IAT) sensor 1 circuit for 0.5 seconds

(1 trip detection logic)


  • Open in IAT sensor 1 circuit

  • IAT sensor 1 (built into MAF meter)

  • ECM

Tech Tips

When any of these DTCs are set, check the IAT by entering the following menus on the GTS: Powertrain / Engine / Data List / Intake Air Temp B1S1 or Intake Air Temp B2S1.

Temperature Displayed Malfunction
-40°C (-40°F) Open circuit
140°C (284°F) or higher Short circuit

MONITOR DESCRIPTION

The ECM monitors the sensor voltage and uses this value to calculate the Intake Air Temperature (IAT). When the sensor output voltage deviates from the normal operating range, the ECM interprets this as a malfunction in the IAT sensor and sets a DTC.

Example:

If the sensor output is less than -40°C (-40°F) for 0.5 seconds or more, the ECM determines that there is an open in the IAT sensor circuit, and sets DTC P00AD or P0113. Conversely, if the output is more than 140°C (284°F) for 0.5 seconds or more, the ECM determines that there is a short in the sensor circuit, and sets DTC P00AC or P0112.

If the malfunction is not repaired successfully, a DTC is set 0.5 seconds after the engine is next started.

WIRING DIAGRAM

A01GIFQE03

INSPECTION PROCEDURE

Tech Tips


  • If other DTCs relating to different systems that have terminal E2 as the ground terminal are output simultaneously, terminal E2 may have an open circuit.


  • Read freeze frame data using the GTS. Freeze frame data records the engine conditions when malfunctions are detected. 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 VALUE USING GTS (INTAKE AIR TEMPERATURE)


    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 / Data List / Intake Air Temp B1S1 or Intake Air Temp B2S1.

    5. Read the value displayed on the GTS.

      Standard
      Same as actual Intake Air Temperature (IAT).
      Result
      Temperature Displayed Proceed to
      -40°C (-40°F) A
      140°C (284°F) or higher B
      Same as actual IAT C

      Tech Tips


      • If there is an open circuit, the GTS indicates -40°C (-40°F).


      • If there is a short circuit, the GTS indicates 140°C (284°F) or higher.


    B
    C
    A
  2. READ VALUE USING GTS (CHECK FOR OPEN IN WIRE HARNESS)

    A01GN7UE08

    1. Disconnect the E13 or E22 MAF meter connector.

    2. Connect terminals THA and E2 or THAR and E2R of the MAF meter wire harness side connector.

    3. Connect the GTS to the DLC3.

    4. Turn the engine switch on (IG).

    5. Turn the GTS on.

    6. Enter the following menus: Powertrain / Engine / Data List / Intake Air Temp B1S1 or Intake Air Temp B2S1.

    7. Read the value displayed on the GTS.

      Standard
      140°C (284°F) or higher

    OK
    NG
  3. READ VALUE USING GTS (CHECK FOR OPEN IN ECM)

    A01GJAWE34

    1. Disconnect the E13 or E22 MAF meter connector.

    2. Connect terminals THA and E2 or THA2 and E2 of the E1 ECM connector.

      Tech Tips

      Before checking, do visual and contact pressure checks on the ECM connector.

    3. Connect the GTS to the DLC3.

    4. Turn the engine switch on (IG).

    5. Turn the GTS on.

    6. Enter the following menus: Powertrain / Engine / Data List / Intake Air Temp B1S1 or Intake Air Temp B2S1.

    7. Read the value displayed on the GTS.

      Standard
      140°C (284°F) or higher

    OK
    NG
  4. READ VALUE USING GTS (CHECK FOR SHORT IN WIRE HARNESS)

    A01GKPBE74

    1. Disconnect the E13 or E22 MAF meter 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 Temp B1S1 or Intake Air Temp B2S1.

    6. Read the value displayed on the GTS.

      Standard
      -40°C (-40°F)

    OK
    NG
  5. READ VALUE USING GTS (CHECK FOR SHORT IN ECM)

    A01GKQIE08

    1. Disconnect the E13 or E22 MAF meter connector.

    2. Disconnect the E1 ECM connector.

    3. Connect the GTS to the DLC3.

    4. Turn the engine switch on (IG).

    5. Turn the GTS on.

    6. Enter the following menus: Powertrain / Engine / Data List / Intake Air Temp B1S1 or Intake Air Temp B2S1.

    7. Read the value displayed on the GTS.

      Standard
      -40°C (-40°F)

    OK
    NG