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DTC    P0A2C-247    Drive Motor "A" Temperature Sensor Circuit Low

DTC    P0A2D-249    Drive Motor "A" Temperature Sensor Circuit High

for Preparation Click here


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
  1. Wire harness or connector
  2. Power management control ECU
  3. Hybrid vehicle motor assembly (Motor temperature sensor)
P0A2D
249
Open or short to +B in the motor temperature sensor circuit

HINT:
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


A159825E50


INSPECTION PROCEDURE

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


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


    A220952E01


    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.READ VALUE USING INTELLIGENT TESTER (MOTOR TEMP NO1)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the power switch on (IG).

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

  1. Read the Data List.

    Result:
    Result
    		Proceed to
    -40°C (-40°F)
    		A
    215°C (419°F)
    		B
    Same as actual temperature
    		C

  1. Turn the power switch off.



B
Go to step 5

C
CHECK FOR INTERMITTENT PROBLEMS (Click here)
A


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


    A217044

  1. Disconnect the motor temperature sensor connector.



    A217047E01

  1. Connect terminals 2 (MMT) and 1 (MMTG) of vehicle side connector D8 of the motor temperature sensor.

  1. Connect the intelligent tester to the DLC3.

  1. Turn the power switch on (IG).

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

  1. 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 
    *1
    		Front view of wire harness connector
    (to Motor Temperature Sensor)

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

  1. Turn the power switch off.

  1. Connect the motor temperature sensor connector.



NG
Go to step 4
OK

REPLACE HYBRID VEHICLE MOTOR ASSEMBLY (Click here)  

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


    A204441E32

  1. Connect terminals 24 (MMT) and 25 (MMTG) of connector A21 of the power management control ECU.

  1. Connect the intelligent tester to the DLC3.

  1. Turn the power switch on (IG).

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

  1. 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 
    *1
    		Component with harness connected
    (Power Management Control ECU)

  1. Turn the power switch off.



NG
REPLACE POWER MANAGEMENT CONTROL ECU (Click here)
OK

REPAIR OR REPLACE HARNESS OR CONNECTOR 

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


    A217044

  1. Disconnect the motor temperature sensor connector.

  1. Connect the intelligent tester to the DLC3.

  1. Turn the power switch on (IG).

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

  1. Read the Data List.

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

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

  1. Turn the power switch off.



NG
Go to step 6
OK

REPLACE HYBRID VEHICLE MOTOR ASSEMBLY (Click here)  

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

  1. Disconnect the motor temperature sensor connector.

  1. Disconnect connector A21 from the power management control ECU.



    A217750E01

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

    Standard Resistance (Check for Open):
    Tester Connection
    		Switch Condition
    		Specified Condition
    D8-2 (MMT) - A21-24 (MMT)
    		Power switch off
    		Below 1 Ω
    D8-1 (MMTG) - A21-25 (MMTG)
    		Power switch off
    		Below 1 Ω

    Standard Resistance (Check for Short):
    Tester Connection
    		Switch Condition
    		Specified Condition
    D8-2 (MMT) or A21-24 (MMT) - Body ground and other terminals
    		Power switch off
    		10 kΩ or higher
    D8-1 (MMTG) or A21-25 (MMTG) - Body ground and other terminals
    		Power switch off
    		10 kΩ or higher

    Text in Illustration 
    *1
    		Front view of wire harness connector
    (to Motor Temperature Sensor)
    *2
    		Rear view of wire harness connector
    (to Power Management Control ECU)

  1. Connect the power management control ECU connector.

  1. Connect the motor temperature sensor connector.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE POWER MANAGEMENT CONTROL ECU (Click here)