HYBRID CONTROL SYSTEM, Diagnostic DTC:P0A2C-247, P0A2D-249

DTC Code DTC Name
P0A2C-247 Drive Motor "A" Temperature Sensor Circuit Low
P0A2D-249 Drive Motor "A" Temperature Sensor Circuit High

DESCRIPTION

Refer to the description for DTC P0A2B-250.

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DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate
P0A2C-247 Drive Motor "A" Temperature Sensor Circuit Low Short or short to GND in the motor temperature sensor circuit

  • Wire harness or connector

  • Hybrid vehicle control ECU assembly

  • Hybrid vehicle motor assembly (Motor temperature sensor)

 Does not come on

Master Warning Light:

Comes on
P0A2D-249 Drive Motor "A" Temperature Sensor Circuit High Open or short to +B in the motor temperature sensor circuit

  • Wire harness or connector

  • Hybrid vehicle control ECU assembly

  • Hybrid vehicle motor assembly (Motor temperature sensor)

 Does not come on

Master Warning Light:

Comes on

Tech Tips

After confirming that DTC P0A2C-247 or P0A2D-249 is output, use the GTS to check "Motor Temp No1" in the hybrid vehicle control ECU assembly Data List.

Displayed Temperature Malfunction
-40°C (-40°F) Open circuit or short to +B
215°C (419°F) Short circuit or short to GND

WIRING DIAGRAM

A0031XNE48
*a No. 1 Engine Room Relay Block and No. 1 Junction Block Assembly Connector
*b Hybrid Vehicle Motor Assembly (Motor Temperature Sensor)
*c Hybrid Vehicle Control ECU Assembly

PROCEDURE


  1. CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU ASSEMBLY CONNECTOR)


    1. Check the connection condition of the hybrid vehicle control ECU assembly connectors and the contact pressure of each terminal. Check the terminals for deformation, and check the connector for water ingress and foreign matter.

      Click here

      A00329CC03
      *A for LHD *B for RHD
      OK
      - The connector is connected securely.
      - The terminals are not deformed and are connected securely.
      - No water or foreign matter in the connector.
      Result
      Result Proceed to
      OK A
      NG (The connector is not connected securely.) B
      NG (The terminals are not making secure contact or are deformed, or water or foreign matter exists in the connector.) C

    B

    CONNECT SECURELY

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    A

  2. CHECK CONNECTOR CONNECTION CONDITION (MOTOR TEMPERATURE SENSOR CONNECTOR)


    1. A00322L

      Check the connection condition of the motor temperature sensor connector and the contact pressure of each terminal. Check the terminals for deformation, and check the connector for water ingress and foreign matter.

      Click here

      OK
      - The connector is connected securely.
      - The terminals are not deformed and are connected securely.
      - No water or foreign matter in the connector.
      Result
      Result Proceed to
      OK A
      NG (The connector is not connected securely.) B
      NG (The terminals are not making secure contact or are deformed, or water or foreign matter exists in the connector.) C

    B

    CONNECT SECURELY

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    A

  3. READ VALUE USING GTS (MOTOR TEMP NO1)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Powertrain / Hybrid Control / Data List / Motor Temp No1.

    4. Read the Data List.


      Powertrain > Hybrid Control > Data List
      Tester Display
      Motor Temp No1
      Result
      Result Proceed to
      -40°C (-40°F) A
      215°C (419°F) B
      Same as actual temperature C

    5. Turn the power switch off.


    B

    INSPECT HYBRID VEHICLE MOTOR ASSEMBLY (MOTOR TEMPERATURE SENSOR) Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    A

  4. INSPECT HYBRID VEHICLE MOTOR ASSEMBLY (MOTOR TEMPERATURE SENSOR)


    1. A00322LN01

      Disconnect the B167 motor temperature sensor connector.

    2. A0032AZC01
      *a

      Component without harness connected

      (Motor Temperature Sensor (Hybrid Vehicle Motor Assembly))

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      B167-1(MMT) - B167-2(MMTG) Power switch OFF 0.3436 to 1442 kΩ

    3. Reconnect the B167 motor temperature sensor connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE HYBRID VEHICLE MOTOR ASSEMBLY Click here

    OK

  5. CHECK HYBRID VEHICLE CONTROL ECU ASSEMBLY


    1. A00324IC40
      *a

      Component with harness connected

      (Hybrid Vehicle Control ECU Assembly)

      Connect terminals 24 (MMT) and 23 (MMTG) of the A149 hybrid vehicle control ECU assembly connector.

    2. Connect the GTS to the DLC3.

    3. Turn the power switch on (IG).

    4. Enter the following menus: Powertrain / Hybrid Control / Data List / Motor Temp No1.

    5. Read the Data List.


      Powertrain > Hybrid Control > Data List
      Tester Display
      Motor Temp No1
      OK
      Tester Display Condition Specified Condition
      Motor Temp No1

      Terminals MMT and MMTG connected.

      Power switch on (IG)

      		 215°C (419°F)

    6. Turn the power switch off.

      Result
      Proceed to
      OK
      NG

    OK

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    NG

    REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY for LHD: Click here
    REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY for RHD: Click here

  6. INSPECT HYBRID VEHICLE MOTOR ASSEMBLY (MOTOR TEMPERATURE SENSOR)


    1. A00322LN01

      Disconnect the B167 motor temperature sensor connector.

    2. A0032AZC01
      *a

      Component without harness connected

      (Motor Temperature Sensor (Hybrid Vehicle Motor Assembly))

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      B167-1(MMT) - B167-2(MMTG) Power switch OFF 0.3436 to 1442 kΩ

    3. Reconnect the B167 motor temperature sensor connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE HYBRID VEHICLE MOTOR ASSEMBLY Click here

    OK

  7. CHECK HARNESS AND CONNECTOR (MOTOR TEMPERATURE SENSOR - HYBRID VEHICLE CONTROL ECU ASSEMBLY)


    1. Disconnect the B167 motor temperature sensor connector.

    2. Disconnect the A149 hybrid vehicle control ECU assembly connector.

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

      A0031Z1C10
      *a

      Front view of wire harness connector

      (to Motor Temperature Sensor)

      		 *b

      Rear view of wire harness connector

      (to Hybrid Vehicle Control ECU Assembly)
      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      B167-1 (MMT) - A149-24 (MMT) Power switch off Below 1 Ω
      B167-2 (MMTG) - A149-23 (MMTG) Power switch off Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      B167-1 (MMT) or A149-24 (MMT) - Body ground and other terminals Power switch off 10 kΩ or higher
      B167-2 (MMTG) or A149-23 (MMTG) - Body ground and other terminals Power switch off 10 kΩ or higher

    4. Reconnect the A149 hybrid vehicle control ECU assembly connector.

    5. Reconnect the B167 motor temperature sensor connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY for LHD: Click here
    REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY for RHD: Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR