SFI SYSTEM, Diagnostic DTC:P0097

DTC Code DTC Name
P0097 Intake Air Temperature Sensor 2 Circuit Low Bank 1

DESCRIPTION

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P0097 Intake Air Temperature Sensor 2 Circuit Low Bank 1

Enable Criteria


  • Engine running

Malfunction Criteria


  • Signal voltage 0.049 V or less

Diagnostic Mask


  • The MIL will be illuminated if the faults are present for 2 consecutive trips

Monitor


  • Continuous

Potential failure modes


  • -

  • Vacuum sensor (manifold absolute pressure sensor) (intake air temperature sensor)

  • Wire harness or connector

  • ECM

 Comes on DTC stored

MONITOR DESCRIPTION

These DTCs are stored when a malfunction is detected in the intake air temperature sensor circuit. If the difference between the intake air temperature and the ambient temperature is outside of the threshold when the turn the engine switch on (IG) after a few hours have elapsed since the engine was stopped, or there is an open or short in the intake air temperature sensor circuit, the ECM will store a DTC.

WIRING DIAGRAM

B004586E03

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 VALUE USING GTS (INTAKE AIR)


    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.

    5. Read the value displayed on the GTS.

      OK
      Same as actual intake air temperature.
      Result
      Result Proceed to
      -40°C (-40°F) A
      Same as actual intake air temperature B

      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).


    B

    CHECK FOR INTERMITTENT PROBLEMS Click here

    A

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


    1. Disconnect the vacuum sensor (manifold absolute pressure sensor) connector.

      B00488CC01
      *1 Vacuum sensor (manifold absolute pressure sensor) *2 ECM
      *a

      Front view of wire harness connector

      (to Vacuum sensor (manifold absolute pressure sensor))

      		 - -

    2. Connect terminals 2 (THA) and 1 (E) of the vacuum sensor (manifold absolute pressure sensor) connector on the wire harness side.

    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.

    7. Read the value displayed on the GTS.

      Standard Value
      140°C (284°F)

      Tech Tips

      Perform "Inspection After Repair" after replacing the vacuum sensor (manifold absolute pressure sensor).

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE VACUUM SENSOR (MANIFOLD ABSOLUTE PRESSURE SENSOR) Click here

    NG

  3. CHECK HARNESS AND CONNECTOR (ECM - VACUUM SENSOR (MANIFOLD ABSOLUTE PRESSURE SENSOR))


    1. Disconnect the B142 ECM connector.

    2. Disconnect the B134 vacuum sensor (manifold absolute pressure sensor) connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      B142-42 (THA2) - B134-2 (THA) Always Below 1 Ω
      B142-9 (E2) - B134-1 (E) Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE ECM Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR