P0A2C

L110F HYBRID VEHICLE CONTROL: HYBRID CONTROL SYSTEM: P0A2C-247,P0A2D-249: Drive Motor "A" Temperature Sensor Circuit Low
P0A2D-249 - Drive Motor "A" Temperature Sensor Circuit High

DESCRIPTION

The resistance of the thermistor built into the motor temperature sensor changes in accordance with changes in MG2 temperature. The lower the MG2 temperature, the higher the thermistor resistance. Conversely, the higher the temperature, the lower the resistance.

HINT
The term "drive motor A" refers to MG2.









HINT
After confirming that DTC P0A2C-247 or P0A2D-249 is output, use the Techstream to check "Motor Temp No1" in the HV ECU data list.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU CONNECTOR)

(a) Check the connections of the hybrid vehicle control ECU connectors.

OK:

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

NG -- CONNECT SECURELY
OK -- Continue to next step.

2. READ VALUE USING TECHSTREAM (MOTOR TEMP NO1)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Select the following menu items: Powertrain / Hybrid Control / Data List / Motor Temp No1.

(d) Read the data list.

Result:





C -- CHECK FOR INTERMITTENT PROBLEMS Check For Intermittent Problems

B -- READ VALUE USING TECHSTREAM (CHECK FOR SHORT)
A -- Continue to next step.

3. READ VALUE USING TECHSTREAM (CHECK FOR OPEN)

(a) Turn the power switch off.

(b) Disconnect the motor temperature sensor connector.





(c) Connect terminals 4 (MMT) and 8 (MMTG) of the vehicle side connector of the motor temperature sensor.

(d) Turn the power switch on (IG).

(e) Select the following menu items: Powertrain / Hybrid Control / Data List / Motor Temp No1.

(f) Read the data list.

OK:





NG -- CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - MOTOR TEMPERATURE SENSOR)

OK -- REPLACE HYBRID VEHICLE TRANSMISSION ASSEMBLY Components

4. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - MOTOR TEMPERATURE SENSOR)

(a) Turn the power switch off.

(b) Connect terminals 23 (MMT) and 22 (MMTG) of connector E55 of the hybrid vehicle control ECU.





(c) Turn the power switch on (IG).

(d) Select the following menu items: Powertrain / Hybrid Control / Data List / Motor Temp No1.

(e) Read the data list.

OK:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE HYBRID VEHICLE CONTROL ECU Components

5. READ VALUE USING TECHSTREAM (CHECK FOR SHORT)

(a) Turn the power switch off.

(b) Disconnect the motor temperature sensor connector.

(c) Turn the power switch on (IG).

(d) Select the following menu items: Powertrain / Hybrid Control / Data List / Motor Temp No1.

(e) Read the data list.

OK:





NG -- CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - MOTOR TEMPERATURE SENSOR)

OK -- REPLACE HYBRID VEHICLE TRANSMISSION ASSEMBLY Components

6. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - MOTOR TEMPERATURE SENSOR)

(a) Turn the power switch off.

(b) Disconnect connector E55 from the hybrid vehicle control ECU.

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





Standard resistance (Check for open):





Standard resistance (Check for short):





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE HYBRID VEHICLE CONTROL ECU Components