LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2021 >> RX 350 Base, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Diagnostic Codes (2 Of 7) >> SFI System >> DTC P0110-15: Intake Air Temperature Sensor 1 Bank 1 Circuit Short to Battery or Open [09/2015 - ] >> Procedure

DTC P0110-15: Intake Air Temperature Sensor 1 Bank 1 Circuit Short to Battery or Open [09/2015 - ]: Procedure

  1. READ VALUE USING TECHSTREAM (CHECK FOR OPEN IN WIRE HARNESS) 
    GTY620690Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *1 Mass Air Flow Meter Sub-assembly *2 ECM
    *a Front view of wire harness connector
    (to Mass Air Flow Meter Sub-assembly)
    - -
    1. Disconnect the mass air flow meter sub-assembly connector.
    2. Connect terminals 4 (THA) and 2 (E2G) of the mass air flow meter sub-assembly connector on the wire harness side.
    3. Connect the Techstream to the DLC3.
    4. Turn the engine switch on (IG).
    5. Turn the Techstream on.
    6. Enter the following menus: Powertrain / Engine / Data List / Intake Air Temperature.

      Powertrain > Engine > Data List 

      Tester Display
      Intake Air Temperature
    7. Read the value displayed on the Techstream.

      Standard value

      140°C (284°F)

      HINT: 

      Perform "Inspection After Repair" after replacing the mass air flow meter sub-assembly.

      Refer to INITIALIZATION [09/2015 - 08/2019] , or refer to INITIALIZATION [08/2019 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE MASS AIR FLOW METER SUB-ASSEMBLY. Refer to  REMOVAL [09/2015 - ] 

    Result: 

    NG 

    See step  2

  2. 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
      D9-4 (THA) - D2-102 (THA) Always Below 1 Ω
      D9-2 (E2G) - D2-115 (E2G) Always Below 1 Ω
      D9-4 (THA) or D2-102 (THA) - Other terminals Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE ECM. Refer to  REMOVAL [09/2015 - 08/2016]  , or refer to  REMOVAL [08/2016 - 08/2019]  , or refer to  REMOVAL [08/2019 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR