DTC P0A2C-247: Drive Motor "A" Temperature Sensor Circuit Low; DTC P0A2D-249: Drive Motor "A" Temperature Sensor Circuit High: Procedure

NG → CONNECT SECURELY 

OK: Go to next step 

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
   -58°F (-50°C)	A
   401°F (205°C)	B
   Same as actual temperature	C

5. Turn the power switch off.

C → See step   7 

B → See step   5 

A: Go to next step 

1. Disconnect connector C25 from the motor temperature sensor.
   Fig 1: Identifying C25 Motor Temperature Sensor

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Connect terminals 1 (MMT) and 3 (MMTG) of connector C25 of the motor temperature sensor.
   Fig 2: Identifying Terminals MMT & MMTG Of Connector C25 Motor Temperature Sensor

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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)	401°F (205°C)

   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 transaxle assembly.

7. Turn the power switch off.
8. Connect the motor temperature sensor connector.

NG → See step   4 

OK → See step   8 

1. Disconnect connector C25 from the motor temperature sensor.
2. Disconnect connector A58 from the hybrid vehicle control ECU.
3. Measure the resistance according to the value(s) in the table below.
   Fig 3: Identifying Terminals MMTG & MMT Of C25 Motor Temperature Sensor & A58 Hybrid Vehicle Control ECU

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance (Check for Open)

   Tester Connection	Switch Condition	Specified Condition
   C25-1 (MMT) - A58-78 (MMT)	Power switch off	Below 1 Ω
   C25-3 (MMTG) - A58-77 (MMTG)	Power switch off	Below 1 Ω

   Standard Resistance (Check for Short)

   Tester Connection	Switch Condition	Specified Condition
   C25-1 (MMT) or A58-78 (MMT) - Body ground and other terminals	Power switch off	10 kΩ or higher
   C25-3 (MMTG) or A58-77 (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	Front 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.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   9 

1. Disconnect connector C25 from the motor temperature sensor.
   Fig 4: Identifying C25 Motor Temperature Sensor

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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	Switch Condition	Specified Condition
   Motor Temp No1	Power switch on (IG)	-58°F (-50°C)

   HINT: 

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

6. Turn the power switch off.

NG → See step   6 

OK → See step   8 

1. Disconnect connector C25 from the motor temperature sensor.
2. Disconnect connector A58 from the hybrid vehicle control ECU.
3. Measure the resistance according to the value(s) in the table below.
   Fig 5: Identifying Terminals MMTG & MMT Of C25 Motor Temperature Sensor & A58 Hybrid Vehicle Control ECU

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance (Check for Open)

   Tester Connection	Switch Condition	Specified Condition
   C25-1 (MMT) - A58-78 (MMT)	Power switch off	Below 1 Ω
   C25-3 (MMTG) - A58-77 (MMTG)	Power switch off	Below 1 Ω

   Standard Resistance (Check for Short)

   Tester Connection	Switch Condition	Specified Condition
   C25-1 (MMT) or A58-78 (MMT) - Body ground and other terminals	Power switch off	10 kΩ or higher
   C25-3 (MMTG) or A58-77 (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	Front 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.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   9