СИСТЕМА УПРАВЛЕНИЯ ГИБРИДНОЙ СИСТЕМОЙ, 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

A01FQHKE07

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. A01FQC6E01
      Text in Illustration
      *A for LHD
      *B for RHD

      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

    CONNECT SECURELY

    OK

  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 MOTOR TEMPERATURE SENSOR


    1. Disconnect the A36 power management control ECU connector.

    2. Turn the power switch on (IG).

    3. A01FQ69E38
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Power Management Control ECU)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      A36-35 (MMT) or A36-34 (MMTG) - Body ground and other terminals Power switch on (IG) Below 1 V

      Note

      Turning the power switch on (IG) with the power management control ECU connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

    4. Turn the power switch off.

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

      Standard Resistance (Check for Open)
      Tester Connection Switch Condition Specified Condition
      A36-35 (MMT) - A36-34 (MMTG)

      Power switch off

      Motor temperature: 0°C (32°F)

      		 142.6 to 184.1 kΩ

      Power switch off

      Motor temperature: 25°C (77°F)

      		 44.2 to 54.4 kΩ

      Power switch off

      Motor temperature: 50°C (122°F)

      		 16.2 to 19.1 kΩ

      Power switch off

      Motor temperature: 100°C (212°F)

      		 3.1 to 3.5 kΩ

    6. Reconnect the A36 power management control ECU connector.


    NG

    CHECK HARNESS AND CONNECTOR (MOTOR TEMPERATURE SENSOR - POWER MANAGEMENT CONTROL ECU) Click here

    OK

    REPLACE POWER MANAGEMENT CONTROL ECU Click here

  4. CHECK MOTOR TEMPERATURE SENSOR


    1. Disconnect the A36 power management control ECU connector.

    2. A01FQ69E38
      Text in Illustration
      *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
      A36-35 (MMT) - A36-34 (MMTG)

      Power switch off

      Motor temperature: 0°C (32°F)

      		 142.6 to 184.1 kΩ

      Power switch off

      Motor temperature: 25°C (77°F)

      		 44.2 to 54.4 kΩ

      Power switch off

      Motor temperature: 50°C (122°F)

      		 16.2 to 19.1 kΩ

      Power switch off

      Motor temperature: 100°C (212°F)

      		 3.1 to 3.5 kΩ
      Check for Short
      Tester Connection Switch Condition Specified Condition
      A36-35 (MMT) or A36-34 (MMTG) - Body ground and other terminals Power switch off 10 kΩ or higher

    3. Reconnect the A36 power management control ECU connector.


    NG

    CHECK HARNESS AND CONNECTOR (MOTOR TEMPERATURE SENSOR - POWER MANAGEMENT CONTROL ECU) Click here

    OK

    REPLACE POWER MANAGEMENT CONTROL ECU Click here

  5. CHECK HARNESS AND CONNECTOR (MOTOR TEMPERATURE SENSOR - POWER MANAGEMENT CONTROL ECU)


    1. Remove the hybrid vehicle transmission assembly Click here.

    2. Disconnect the F51 motor temperature sensor connector.

    3. Disconnect the A36 power management control ECU connector.

    4. A01FRXLE05
      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)

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

      Standard Resistance
      Check for Open
      Tester Connection Switch Condition Specified Condition
      F51-4 (MMT) - A36-35 (MMT) Power switch off Below 1 Ω
      F51-8 (MMTG) - A36-34 (MMTG) Power switch off Below 1 Ω
      Check for Short
      Tester Connection Switch Condition Specified Condition
      F51-4 (MMT) or A36-35 (MMT) - Body ground and other terminals Power switch off 10 kΩ or higher
      F51-8 (MMTG) or A36-34 (MMTG) - Body ground and other terminals Power switch off 10 kΩ or higher

    5. Reconnect the A36 power management control ECU connector.

    6. Reconnect the F51 motor temperature sensor connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE HYBRID VEHICLE TRANSMISSION ASSEMBLY Click here