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 or short to GND in the motor temperature sensor circuit

  • Wire harness or connector

  • Power management control ECU

  • Hybrid vehicle transaxle assembly (Motor temperature sensor)
P0A2D 249 Open or short to +B in the motor temperature sensor circuit

Tech Tips

After confirming that DTC P0A2C-247 or P0A2D-249 is output, use the intelligent tester 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

A01NHIGE01

INSPECTION PROCEDURE

PROCEDURE


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


    1. Check the connections of the power management control ECU connectors.

      A01NF3IE01
      Text in Illustration
      *1 for LHD *2 for RHD
      OK
      The connectors are connected securely and there are no contact problems.

    NG

    CONNECT SECURELY

    OK

  2. CHECK CONNECTOR CONNECTION CONDITION (ENGINE ROOM JUNCTION BLOCK ASSEMBLY)


    1. A01NGRV

      Check the connections of the engine room junction block assembly connectors.

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

    NG

    CONNECT SECURELY

    OK

  3. READ VALUE USING INTELLIGENT TESTER (MOTOR TEMP NO1)


    1. Connect the intelligent tester 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

    READ VALUE USING INTELLIGENT TESTER (CHECK FOR SHORT) Click here

    C

    CHECK FOR INTERMITTENT PROBLEMS Click here

    A

  4. READ VALUE USING INTELLIGENT TESTER (CHECK FOR OPEN)


    1. A01NGRV

      Disconnect connector DA1 from the engine room junction block assembly.

    2. A01NH4GE01

      Connect terminals DA1-B11 (MMT) and DA1-B10 (MMTG) of the engine room junction block assembly.

    3. Connect the intelligent tester to the DLC3.

    4. Turn the power switch on (IG).

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

    6. Read the Data List.

      Result
      Tester Display Condition Specified Condition
      Motor Temp No1

      Terminals MMT and MMTG connected.

      Power switch on (IG)

      		 215°C (419°F)
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Engine Room Junction Block Assembly)

    7. Turn the power switch off.

    8. Connect the engine room junction block assembly connector.


    NG

    CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - ENGINE ROOM JUNCTION BLOCK) Click here

    OK

  5. CHECK HARNESS AND CONNECTOR (MOTOR TEMPERATURE SENSOR - ENGINE ROOM JUNCTION BLOCK)


    1. Disconnect connector DA1 from the engine room junction block assembly.

    2. Remove the inverter with converter assembly Click here.

    3. A01NGSE

      Disconnect the motor temperature sensor connector.

    4. A01NFUXE01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Motor Temperature Sensor)
      *2

      Rear view of wire harness connector

      (to Engine Room Junction Block Assembly)

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

      Standard Resistance (Check for Open)
      Tester Connection Switch Condition Specified Condition
      D47-1 (MMT) - DA1-A11 (MMT) Power switch off Below 1 Ω
      D47-3 (MMTG) - DA1-A10 (MMTG) Power switch off Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Switch Condition Specified Condition
      D47-1 (MMT) or DA1-A11 (MMT) - Body ground and other terminals Power switch off 10 kΩ or higher
      D47-3 (MMTG) or DA1-A10 (MMTG) - Body ground and other terminals Power switch off 10 kΩ or higher

    5. Connect the motor temperature sensor connector.

    6. Install the inverter with converter assembly.

    7. Connect the engine room junction block assembly connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY Click here

  6. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - ENGINE ROOM JUNCTION BLOCK)


    1. A01NERPE11
      Text in Illustration
      *1

      Component with harness connected

      (Power Management Control ECU)

      Connect terminals 24 (MMT) and 25 (MMTG) of the connector A80 of the power management control ECU.

    2. Connect the intelligent tester 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.

      Result
      Tester Display Condition Specified Condition
      Motor Temp No1

      Terminals MMT and MMTG connected.

      Power switch on (IG)

      		 215°C (419°F)
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    6. Turn the power switch off.


    B

    REPLACE POWER MANAGEMENT CONTROL ECU (for LHD) Click here

    C

    REPLACE POWER MANAGEMENT CONTROL ECU (for RHD) Click here

    A

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  7. READ VALUE USING INTELLIGENT TESTER (CHECK FOR SHORT)


    1. A01NGRV

      Disconnect connector from the engine room junction block assembly.

    2. Connect the intelligent tester 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.

      Result
      Tester Display Condition Specified Condition
      Motor Temp No1 Power switch on (IG) -40°C (-40°F)

    6. Turn the power switch off.


    NG

    CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - ENGINE ROOM JUNCTION BLOCK) Click here

    OK

  8. CHECK HARNESS AND CONNECTOR (ENGINE ROOM JUNCTION BLOCK - MOTOR TEMPERATURE SENSOR)


    1. Disconnect connector DA1 from the engine room junction block assembly.

    2. Remove the inverter with converter assembly Click here.

    3. A01NGSE

      Disconnect the motor temperature sensor connector.

    4. A01NFUXE01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Motor Temperature Sensor)
      *2

      Rear view of wire harness connector

      (to Engine Room Junction Block Assembly)

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

      Standard Resistance (Check for Open)
      Tester Connection Switch Condition Specified Condition
      D47-1 (MMT) - DA1-A11 (MMT) Power switch off Below 1 Ω
      D47-3 (MMTG) - DA1-A10 (MMTG) Power switch off Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Switch Condition Specified Condition
      D47-1 (MMT) or DA1-A11 (MMT) - Body ground and other terminals Power switch off 10 kΩ or higher
      D47-3 (MMTG) or DA1-A10 (MMTG) - Body ground and other terminals Power switch off 10 kΩ or higher

    5. Connect the motor temperature sensor connector.

    6. Install the inverter with converter assembly.

    7. Connect the engine room junction block assembly connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY Click here

  9. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - ENGINE ROOM JUNCTION BLOCK)


    1. Disconnect connector DA1 from the engine room junction block assembly.

    2. Disconnect connector A80 from the power management control ECU.

    3. A01NGDPE01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Power Management Control ECU)
      *2

      Rear view of wire harness connector

      (to Engine Room Junction Block Assembly)

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

      Standard Resistance (Check for Open)
      Tester Connection Switch Condition Specified Condition
      A80-24 (MMT) - DA1-A11 (MMT) Power switch off Below 1 Ω
      A80-25 (MMTG) - DA1-A10 (MMTG) Power switch off Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Switch Condition Specified Condition
      A80-24 (MMT) or DA1-A11 (MMT) - Body ground and other terminals Power switch off 10 kΩ or higher
      A80-25 (MMTG) or DA1-A10 (MMTG) - Body ground and other terminals Power switch off 10 kΩ or higher
      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG C

    4. Connect the power management control ECU connector.

    5. Connect the engine room junction block assembly connector.


    B

    REPLACE POWER MANAGEMENT CONTROL ECU (for RHD) Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    A

    REPLACE POWER MANAGEMENT CONTROL ECU (for LHD) Click here