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

Line short or short to ground in the motor temperature sensor circuit

(1 trip detection logic)


  • 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

(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 Techstream 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

A01I2C9E81

INSPECTION PROCEDURE

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. A01I61A

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

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

    NG
    OK
  2. READ VALUE USING TECHSTREAM (MOTOR TEMP NO1)


    1. Connect the Techstream 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
    C
    A
  3. READ VALUE USING TECHSTREAM (CHECK FOR OPEN)


    1. A01I3U3E06

      Disconnect the E15 motor temperature sensor connector.

    2. A01I2J8E01

      Connect terminals 1 (MMT) and 3 (MMTG) of vehicle side connector E15 of the motor temperature sensor.

    3. Connect the Techstream 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.

      OK
      Tester Display Condition Specified Condition
      Motor Temp No1

      Terminals MMT and MMTG connected.

      Power switch on (IG)

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

      Front view of wire harness connector

      (to Motor Temperature Sensor)

      Tech Tips

      The motor temperature sensor is not available separately. If it requires replacement, replace the hybrid vehicle transaxle assembly.

      Result
      Result Proceed to
      OK (When Not Using the Engine Support Bridge) A
      OK (When Using the Engine Support Bridge) B
      NG C
    7. Turn the power switch off.

    8. Reconnect the E15 motor temperature sensor connector.


    B
    C
    A
  4. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - MOTOR TEMPERATURE SENSOR)


    1. A01I53YE81
      Text in Illustration
      *a

      Component with harness connected

      (Power Management Control ECU)

      Connect terminals 35(MMT) and 34(MMTG) of connector A39 of the power management control ECU.

    2. Connect the Techstream 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 MMT and MMTG connected.

      Power switch on (IG)

      215°C (419°F)
    6. Turn the power switch off.


    NG
    OK
  5. READ VALUE USING TECHSTREAM (CHECK FOR SHORT)


    1. A01I3U3E06

      Disconnect the E15 motor temperature sensor connector.

    2. Connect the Techstream 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 Power switch on (IG) -40°C (-40°F)

      Tech Tips

      The motor temperature sensor is not available separately. If it requires replacement, replace the hybrid vehicle transaxle assembly.

      Result
      Result Proceed to
      OK (When Not Using the Engine Support Bridge) A
      OK (When Using the Engine Support Bridge) B
      NG C
    6. Turn the power switch off.

    7. Reconnect the E15 motor temperature sensor connector.


    B
    C
    A
  6. CHECK HARNESS AND CONNECTOR (MOTOR TEMPERATURE SENSOR - POWER MANAGEMENT CONTROL ECU)


    1. Disconnect the E15 motor temperature sensor connector.

    2. Disconnect the A39 power management control ECU connector.

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

      A01I4S1E01
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Motor Temperature Sensor)

      *b

      Rear view of wire harness connector

      (to Power Management Control ECU)

      Standard Resistance (Check for Open)
      Tester Connection Switch Condition Specified Condition
      E15-1 (MMT) - A39-35 (MMT) Power switch off Below 1 Ω
      E15-3 (MMTG) - A39-34 (MMTG) Power switch off Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Switch Condition Specified Condition
      E15-1 (MMT) or A39-35 (MMT) - Body ground and other terminals Power switch off 10 kΩ or higher
      E15-3 (MMTG) or A39-34 (MMTG) - Body ground and other terminals Power switch off 10 kΩ or higher
    4. Reconnect the A39 power management control ECU connector.

    5. Reconnect the E15 motor temperature sensor connector.


    NG
    OK