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 Click here.

DTC No. DTC Detection Condition Trouble Area
P0A2C-247

Short or short to GND in the motor temperature sensor circuit

(1 trip detection logic)

  • Wire harness or connector

  • Power management control ECU

  • Hybrid vehicle transmission assembly (Motor temperature sensor)
P0A2D-249

Open or short to +B in the motor temperature sensor circuit

(1 trip detection logic)
Related Data List
DTC No. Data List
P0A2C-247 Motor Temp No1
P0A2D-249

Tech Tips

After confirming that DTC P0A2C-247 or P0A2D-249 is output, use the GTS to check "Motor Temp No1" in the power management control ECU 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

A000NYNE28
*a ADC
*b Hybrid Vehicle Transmission Assembly (Motor Temperature Sensor)
*c No. 1 Engine Room Relay Block and Junction Block Assembly Connector
*d Power Management Control ECU

CAUTION / NOTICE / HINT

Tech Tips

After the repair, clear the DTCs and perform the following procedure to check that DTCs are not output.


  1. Turn the power switch on (IG) and wait for 5 seconds or more.

PROCEDURE


  1. CHECK CONNECTOR CONNECTION CONDITION (POWER MANAGEMENT CONTROL ECU CONNECTOR)


    1. A000R79C01
      *A for LHD
      *B for RHD

      Check the connection condition of the power management control ECU connectors and the contact pressure of each terminal.

    2. 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

    CONNECT SECURELY

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  2. 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.

      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

    CHECK MOTOR TEMPERATURE SENSOR Click here

    C

    CHECK FOR INTERMITTENT PROBLEMS Click here

    A

  3. CHECK POWER MANAGEMENT CONTROL ECU


    1. A000O28C32
      *a

      Component with harness connected

      (Power Management Control ECU)

      Connect terminals 35 (MMT) and 34 (MMTG) of connector A36 of the power management control ECU.

    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.

      OK
      Tester Display Condition Specified Condition
      Motor Temp No1

      Terminals A36-35 (MMT) and A36-34 (MMTG) connected

      Power switch on (IG)

      		 215°C (419°F)
      Result
      Proceed to
      OK
      NG

    6. Turn the power switch off.


    REPLACE POWER MANAGEMENT CONTROL ECU Click here

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


    1. Remove the hybrid vehicle transmission assembly.

      Click here

    2. B002BU6

      Check the connection condition of the motor temperature sensor connector and the contact pressure of each terminal.

    3. 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

  5. INSPECT HYBRID VEHICLE TRANSMISSION ASSEMBLY (MOTOR TEMPERATURE SENSOR)


    1. B002BU6

      Disconnect the motor temperature sensor connector.

    2. B002B72C01
      *a

      Component without harness connected

      (Hybrid Vehicle Transmission Assembly (Motor Temperature Sensor))

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      4 (MMT) - 8 (MMTG) Power switch off 0.3436 to 1442 kΩ

    3. Reconnect the motor temperature sensor connector.


    OK

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    NG

    REPLACE HYBRID VEHICLE TRANSMISSION ASSEMBLY Click here

  6. CHECK MOTOR TEMPERATURE SENSOR


    1. A000OPDC02
      *1 No. 1 Engine Room Relay Block and Junction Block Assembly Connector

      Disconnect the No. 1 engine room relay block and junction block assembly connector.

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

      Standard Resistance (Check for Open)
      Tester Connection Switch Condition Specified Condition
      AF1-43 - AF1-44 Power switch off 0.3436 to 1442 kΩ
      Standard Resistance (Check for Short)
      Tester Connection Switch Condition Specified Condition
      AF1-43 or AF1-44 - Body ground and other terminals Power switch off 10 kΩ or higher

    3. Reconnect the No. 1 engine room relay block and junction block assembly connector.


    NG

    CHECK CONNECTOR CONNECTION CONDITION (MOTOR TEMPERATURE SENSOR CONNECTOR) Click here

    OK

  7. CHECK HARNESS AND CONNECTOR (NO. 1 ENGINE ROOM RELAY BLOCK AND JUNCTION BLOCK ASSEMBLY - POWER MANAGEMENT CONTROL ECU)


    1. Disconnect the No. 1 engine room relay block and junction block assembly connector.

    2. Disconnect the power management control ECU connector.

    3. A000REEC06
      *1 No. 1 Engine Room Relay Block and Junction Block Assembly Connector
      *a

      Rear view of wire harness connector

      (to Power Management Control ECU)

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

      Standard Resistance
      Check for Open
      Tester Connection Switch Condition Specified Condition
      AF1-43 - A36-35 (MMT) Power switch off Below 1 Ω
      AF1-44 - A36-34 (MMTG) Power switch off Below 1 Ω
      Check for Short
      Tester Connection Switch Condition Specified Condition
      AF1-43 or A36-35(MMT) - Body ground and other terminals Power switch off 10 kΩ or higher
      AF1-44 or A36-34 (MMTG) - Body ground and other terminals Power switch off 10 kΩ or higher

    4. Connect the power management control ECU connector.

    5. Connect the No. 1 engine room relay block and junction block assembly connector.


    OK

    REPLACE POWER MANAGEMENT CONTROL ECU Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (NO. 1 ENGINE ROOM RELAY BLOCK AND JUNCTION BLOCK ASSEMBLY - POWER MANAGEMENT CONTROL ECU)

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


    1. Remove the hybrid vehicle transmission assembly.

      Click here

    2. B002BU6

      Check the connection condition of the motor temperature sensor connector and the contact pressure of each terminal.

    3. 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

  9. INSPECT HYBRID VEHICLE TRANSMISSION ASSEMBLY (MOTOR TEMPERATURE SENSOR)


    1. B002BU6

      Disconnect the motor temperature sensor connector.

    2. B002B72C01
      *a

      Component without harness connected

      (Hybrid Vehicle Transmission Assembly (Motor Temperature Sensor))

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      4 (MMT) - 8 (MMTG) Power switch off 0.3436 to 1442 kΩ

    3. Reconnect the motor temperature sensor connector.


    OK

    REPAIR OR REPLACE HARNESS OR CONNECTOR (NO. 1 ENGINE ROOM RELAY BLOCK AND JUNCTION BLOCK ASSEMBLY - HYBRID VEHICLE TRANSMISSION ASSEMBLY)

    NG

    REPLACE HYBRID VEHICLE TRANSMISSION ASSEMBLY Click here