P0A2D

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

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

DTC 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" indicates MG2.

HINT: After confirming that DTC P0A2C-247 or P0A2D-249 is output, use the intelligent tester or 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 INTELLIGENT TESTER OR TECHSTREAM (MOTOR1 TEMP)
(a) Connect the intelligent tester or Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Select the following menu items:
(1) Intelligent tester - Select: DIAGNOSIS / OBD/MOBD / HV ECU / DATA LIST / MOTOR1 TEMP.
(2) Techstream - Select: Powertrain / Hybrid Control / Data List / Motor Temp No1.
(d) Read the data list.
Result:

C -- CHECK FOR INTERMITTENT PROBLEMS
B -- READ VALUE USING INTELLIGENT TESTER OR TECHSTREAM (CHECK FOR SHORT)
A -- Continue to next step.
3. READ VALUE USING INTELLIGENT TESTER OR 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:
(1) Intelligent tester - Select: DIAGNOSIS / OBD/MOBD / HV ECU / DATA LIST / MOTOR1 TEMP.
(2) Techstream - Select: Powertrain / Hybrid Control / Data List / Motor Temp No1.
(f) Read the data list.
OK:

Intelligent Tester:

Techstream:

NG -- CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - MOTOR TEMPERATURE SENSOR)
OK -- REPLACE HYBRID VEHICLE TRANSMISSION ASSEMBLY
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 the connector E 55 of hybrid vehicle control ECU.
(c) Turn the power switch on (IG).
(d) Select the following menu items:
(1) Intelligent tester - Select: DIAGNOSIS / OBD/MOBD / HV ECU / DATA LIST / MOTOR1 TEMP.
(2) Techstream - Select: Powertrain / Hybrid Control / Data List / Motor Temp No1.
(e) Read the data list.
OK:

Intelligent Tester:

Techstream:

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE HYBRID VEHICLE CONTROL ECU
5. READ VALUE USING INTELLIGENT TESTER OR 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:
(1) Intelligent tester - Select: DIAGNOSIS / OBD/MOBD / HV ECU / DATA LIST / MOTOR1 TEMP.
(2) Techstream - Select: Powertrain / Hybrid Control / Data List / Motor Temp No1.
(e) Read the data list.
OK:

Intelligent Tester:

Techstream:

NG -- CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - MOTOR TEMPERATURE SENSOR)
OK -- REPLACE HYBRID VEHICLE TRANSMISSION ASSEMBLY
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.

Standard resistance (Check for short):

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE HYBRID VEHICLE CONTROL ECU