AIR CONDITIONING SYSTEM(for Automatic Air Conditioning System), Diagnostic DTC:B1467/67

DTC Code DTC Name
B1467/67 Rear Air Foot Duct Sensor Circuit on Driver Side

DESCRIPTION

The air duct temperature sensor LH*1 or RH*2 (for driver side) detects the duct temperature and sends the appropriate signals to the air conditioning amplifier assembly.

DTC Code DTC Detection Condition Trouble Area
B1467/67 An open or short in the air duct temperature sensor LH*1 or RH*2 circuit.

  • Air duct temperature sensor LH*1

  • Air duct temperature sensor RH*2

  • Harness or connector (air duct temperature sensor LH)*1

  • Harness or connector (air duct temperature sensor RH)*2

  • Air conditioning amplifier assembly

Tech Tips

*1: for LHD

*2: for RHD

WIRING DIAGRAM

A01X64TE28
for LHD
*a Air Duct Temperature Sensor LH
*b Air Conditioning Amplifier Assembly
A01X64TE29
for RHD
*a Air Duct Temperature Sensor RH
*b Air Conditioning Amplifier Assembly

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER (AIR DUCT TEMPERATURE SENSOR)


    1. Use the Data List to check if the air duct temperature sensor LH*1 or RH*2 (for driver side) is functioning properly.

      Air Conditioner
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Foot Duct Sensor (Rear D)

      Min.: -12.7°C (9.14°F)

      Max.: 76.55°C (169.79°F)

      		 Actual air duct temperature sensor (for driver side) displayed

      Open in the circuit: -12.7°C (9.14°F)

      Short in the circuit: 76.55°C (169.79°F)

      Tech Tips

      *1: for LHD

      *2: for RHD

      OK
      The display is as specified in the normal condition.

    OK

    REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Click here

    NG

  2. CHECK AIR DUCT TEMPERATURE SENSOR


    1. for LHD

      A01XB0XE01
      *a Component without harness connected: (Air Duct Temperature Sensor)
      *b Resistance (kΩ)
      *c Maximum per missible value line
      *d Temperature °C

      1. Remove the air duct temperature sensor LH Click here.

    2. for RHD


      1. Remove the air duct temperature sensor RH Click here.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 (+) - 2 (-) at 10°C (50°F) 9.4 to 10.5 kΩ
      at 15°C (59°F) 7.5 to 8.3 kΩ
      at 20°C (68°F) 6.0 to 6.5 kΩ
      at 25°C (77°F) 4.5 to 5.2 kΩ
      at 30°C (86°F) 3.8 to 4.2 kΩ
      at 35°C (95°F) 3.1 to 3.4 kΩ
      at 40°C (104°F) 2.5 to 2.8 kΩ
      at 45°C (113°F) 2.0 to 2.3 kΩ
      at 50°C (122°F) 1.6 to 2.0 kΩ
      at 55°C (131°F) 1.3 to 1.6 kΩ
      at 60°C (140°F) 1.1 to 1.4 kΩ

      Note


      • Touching the sensor even slightly may change the resistance value. Hold the connector of the sensor.

      • When measuring the resistance, the sensor temperature must be the same as the ambient temperature.

      Tech Tips

      As the temperature increases, the resistance decreases (see the graph).

      If the resistance value is not as specified, replace the sensor.

      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    B

    REPLACE AIR DUCT TEMPERATURE SENSOR LH Click here

    C

    REPLACE AIR DUCT TEMPERATURE SENSOR RH Click here

    A

  3. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - AIR DUCT TEMPERATURE SENSOR)


    1. for LHD

      A01X32BE03
      *1 Front view of wire harness connector: (to Air Duct Temperature Sensor LH)
      *2 Rear view of wire harness connector: (to Air Conditioning Amplifier Assembly)

      1. Disconnect the K21 sensor connector.

      2. Disconnect the E35 amplifier connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        E35-25 (TR3) - K21-1 (+) Always Below 1 Ω
        E35-34 (SGND) - K21-2 (-)
        E35-25 (TR3) - Body ground Always 10 kΩ or higher
        E35-34 (SGND) - Body ground

    2. for RHD

      A01X32BE04
      *1 Front view of wire harness connector: (to Air Duct Temperature Sensor RH)
      *2 Rear view of wire harness connector: (to Air Conditioning Amplifier Assembly)

      1. Disconnect the L12 sensor connector.

      2. Disconnect the E35 amplifier connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        E35-26 (TR4) - L12-1 (+) Always Below 1 Ω
        E35-12 (SG-9) - L12-2 (-)
        E35-26 (TR4) - Body ground Always 10 kΩ or higher
        E35-12 (SG-9) - Body ground

    OK

    REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR