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. INF Code DTC Detection Condition Trouble Area
P0A2C 247

Short to GND or short in the motor temperature sensor circuit

(1 trip detection logic)

  • Wire harness or connector

  • Hybrid vehicle control ECU

  • Hybrid vehicle transaxle 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 hybrid vehicle 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

A004FDDE96
*a ADC
*b Hybrid Vehicle Transaxle Assembly (Motor Temperature Sensor)
*c Engine Room Relay Block
*d Hybrid Vehicle 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 ignition switch to ON (IG) and wait for 5 seconds or more.

PROCEDURE


  1. CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU 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

    1. A01V0I0E02
      Text in Illustration
      *A for LHD
      *B for RHD

      Check the connector connections and contact pressure of the relevant terminals for the hybrid vehicle control ECU connectors Click here.

      OK
      The connectors are connected securely and there are no contact pressure problems.

    B

    CONNECT SECURELY

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    A

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


    1. A004G33

      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.

      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 ignition switch to 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 ignition switch off.


    B

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

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    A

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


    1. A004G33

      Disconnect the C25 motor temperature sensor connector.

    2. A004GHUC04
      *a

      Component without harness connected

      (Motor Temperature Sensor (Hybrid Vehicle Transaxle Assembly))

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      C25-2 (MMT) - C25-1 (MMTG) Ignition switch off 0.3436 to 1442 kΩ

    3. Connect the C25 motor temperature sensor connector.


    NG

    REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY Click here

    OK

  5. CHECK HYBRID VEHICLE CONTROL ECU


    1. A004GFUE01
      Text in Illustration
      *a

      Component with harness connected

      (Hybrid Vehicle Control ECU)

      Connect terminals 24 (MMT) and 23 (MMTG) of connector A26 of the hybrid vehicle control ECU.

    2. Connect the GTS to the DLC3.

    3. Turn the ignition switch to ON (IG).

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

    5. Read the Data List.

      OK
      GTS Display Condition Specified Condition
      Motor Temp No1

      Terminals MMT and MMTG connected.

      Ignition switch ON (IG)

      		 215°C (419°F)

    6. Turn the ignition switch off.


    OK

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    NG

    REPLACE HYBRID VEHICLE CONTROL ECU Click here

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


    1. A004G33

      Disconnect connector C25 from the motor temperature sensor .

    2. A004GHUC04
      *a

      Component without harness connected

      (Motor Temperature Sensor (Hybrid Vehicle Transaxle Assembly))

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      C25-2 (MMT) - C25-1 (MMTG) Ignition switch off 0.3436 to 1442 kΩ

    3. Connect the C25 motor temperature sensor connector.


    NG

    REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY Click here

    OK

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


    1. Disconnect the motor temperature sensor connector.

    2. Disconnect the hybrid vehicle control ECU connector.

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

      A004F9VE02
      Standard Resistance (Check for Open)
      Tester Connection Switch Condition Specified Condition
      C25-2 (MMT) - A26-24 (MMT) Ignition switch off Below 1 Ω
      C25-1 (MMTG) - A26-23 (MMTG) Ignition switch off Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Switch Condition Specified Condition
      C25-2 (MMT) or A26-24 (MMT) - Body ground and other terminals Ignition switch off 10 kΩ or higher
      C25-1 (MMTG) or A26-23 (MMTG) - Body ground and other terminals Ignition switch off 10 kΩ or higher
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Motor Temperature Sensor)
      *b

      Rear view of wire harness connector

      (to Hybrid Vehicle Control ECU)

    4. Connect the hybrid vehicle control ECU connector.

    5. Connect the motor temperature sensor connector.


    OK

    REPLACE HYBRID VEHICLE CONTROL ECU Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR