ECD SYSTEM, Diagnostic DTC:P0112,P0113 and P1017

DTC Code DTC Name
P0112 Intake Air Temperature Sensor 1 Circuit Low Bank 1
P0113 Intake Air Temperature Sensor 1 Circuit High Bank 1
P1017 Physical Range High Error for Air Temperature Sensor

DESCRIPTION

The intake air temperature sensor is built into the Mass Air Flow (MAF) meter sub-assembly and senses the intake air temperature.

A thermistor built into the sensor changes its resistance value according to the intake air temperature.

The lower the intake air temperature, the greater the thermistor resistance value. The higher the intake air temperature, the lower the thermistor resistance value.

The intake air temperature sensor is connected to the ECM. The 5 V power source voltage in the ECM is applied to the intake air temperature sensor from terminal THA 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 in accordance with changes in the intake air temperature, the potential at terminal THA also changes. Based on this signal, the ECM increases the fuel injection volume to improve drivability with a cold engine.

Tip:

When the intake air temperature sensor output is outside the normal range, the ECM determines that this is a malfunction.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

P0112

Intake Air Temperature Sensor 1 Circuit Low Bank 1

Intake air temperature sensor output is less than 0.125 V for 0.05 seconds.

(3 trip detection logic)

  • Open or short in intake air temperature sensor (built into mass air flow meter sub-assembly) circuit

  • Intake air temperature sensor (built into mass air flow meter sub-assembly)

  • ECM

Comes on

DTC stored

P0113

Intake Air Temperature Sensor 1 Circuit High Bank 1

Intake air temperature sensor output is more than 4.85 V for 0.05 seconds.

(3 trip detection logic)

  • Open or short in intake air temperature sensor (built into mass air flow meter sub-assembly) circuit

  • Intake air temperature sensor (built into mass air flow meter sub-assembly)

  • ECM

Comes on

DTC stored

P1017

Physical Range High Error for Air Temperature Sensor

Intake air temperature sensor output is more than 144.9°C (292.8°F) for 1 second.

(3 trip detection logic)

  • Open or short in intake air temperature sensor (built into mass air flow meter sub-assembly) circuit

  • Intake air temperature sensor (built into mass air flow meter sub-assembly)

  • ECM

Does not come on

DTC stored
Table 1. Related Data List

DTC No.

Data List

P0112

P0113

P1017

Intake Air

WIRING DIAGRAM

A355438E11

CAUTION / NOTICE / HINT

Note:

  • When replacing the ECM, the ECM needs registration and initialization.

    Click here

  • After replacing the mass air flow meter sub-assembly, the ECM needs initialization.

    Click here

Tip:

  • When the ECM must be replaced, before replacing the ECM, perform the "Learning Values Save" function using the GTS. Then after installing the new ECM, perform all of the initialization/registrations for the "Learning Values Write" function by following the instructions shown on the GTS display.

  • Read freeze frame data using the GTS. Freeze frame data records the engine condition 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, 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 ignition switch to ON and turn the GTS on.

    3. Enter the following menus: Powertrain / Engine and ECT / Data List / Intake Air.

      Powertrain > Engine and ECT > Data List

      Tester Display

      Intake Air

    4. Read the value.

      OK

      Same as actual intake air temperature.

      Result

      Result

      Result

      Proceed to

      -40°C (-40°F)

      -40°C (-40°F)

      A

      140°C (284°F) or higher

      140°C (284°F) or higher

      B

      Same as actual intake air temperature

      Same as actual intake air temperature

      C
      Tip:

      • 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

    READ VALUE USING GTS (CHECK FOR SHORT IN WIRE HARNESS)Click here

    C

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIREDClick here

    A

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

    1. Disconnect the mass air flow meter sub-assembly connector.

    2. Connect terminals B221-3 (THA) and B221-2 (E2G) of the mass air flow meter sub-assembly wire harness side connector.

    3. Connect the GTS to the DLC3.

    4. Turn the ignition switch to ON and turn the GTS on.

    5. Enter the following menus: Powertrain / Engine and ECT / Data List / Intake Air.

      Powertrain > Engine and ECT > Data List

      Tester Display

      Intake Air

    6. Read the value.

      Standard value

      140°C (284°F) or higher

    Result

    Proceed to

    OK

    NG
    NG

    CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY- ECM)Click here

    OK

  3. CONFIRM GOOD CONNECTION TO SENSOR. IF OK, REPLACE MASS AIR FLOW METER SUB-ASSEMBLY

    1. Replace the mass air flow meter sub-assembly.

      Click here

    2. Perform the air flow meter learning value reset.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIREDClick here

  4. 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

      B221-3 (THA) - B220-114 (THA)

      Always

      Below 1 Ω

      B221-2 (E2G) - B220-129 (EVG)

      Always

      Below 1 Ω

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTORClick here

    OK

  5. CONFIRM GOOD CONNECTION TO ECM. IF OK, REPLACE ECM

    1. Replace the ECM.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIREDClick here

  6. READ VALUE USING GTS (CHECK FOR SHORT IN WIRE HARNESS)

    1. Disconnect the mass air flow meter sub-assembly connector.

    2. Connect the GTS to the DLC3.

    3. Turn the ignition switch to ON and turn the GTS on.

    4. Enter the following menus: Powertrain / Engine and ECT / Data List / Intake Air.

      Powertrain > Engine and ECT > Data List

      Tester Display

      Intake Air

    5. Read the value.

      Standard value

      -40°C (-40°F)

    Result

    Proceed to

    OK

    NG
    NG

    CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY - ECM)Click here

    OK

  7. REPLACE MASS AIR FLOW METER SUB-ASSEMBLY

    1. Replace the mass air flow meter sub-assembly.

      Click here

    2. Perform the air flow meter learning value reset.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIREDClick here

  8. 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

      B221-3 (THA) or B220-114 (THA) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTORClick here

    OK

  9. REPLACE ECM

    1. Replace the ECM.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIREDClick here

  10. REPAIR OR REPLACE HARNESS OR CONNECTOR

    1. Repair or replace the harness or connector.

    Result

    Proceed to

    NEXT
    NEXT

  11. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON and turn the GTS on.

    3. Clear the DTCs.

      Powertrain > Engine and ECT > Clear DTCs

    4. Turn the ignition switch off and wait for 60 seconds or more [A].

    5. Perform road test [B].

    6. Repeat [A] and [B] for the number of trips detected.

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

      Powertrain > Engine and ECT > Trouble Codes

    8. Confirm that the DTC is not output again.

    Result

    Proceed to

    NEXT
    NEXT

    END