P0A2D

P310 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 Techstream to check "Motor Temp No2" in the hybrid vehicle control ECU data list.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

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

(a) Check the connections of all 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. INSPECT HYBRID VEHICLE CONTROL ECU
(a) Turn the power switch on (IG).

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

B -- INSPECT MOTOR TEMPERATURE SENSOR
A -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (+B SHORT)

(a) Disconnect the B1 connector from the hybrid vehicle control ECU.
(b) Turn the power switch on (IG).
(c) Measure the voltage according to the value(s) in the table below.
Result:

NOTE: Turning the power switch on (IG) with the hybrid vehicle control ECU connectors disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

B -- REPLACE HYBRID VEHICLE CONTROL ECU
A -- Continue to next step.
4. CHECK HARNESS AND CONNECTOR (+B SHORT)
(a) Disconnect the B1 connector from the hybrid vehicle control ECU.
(b) Disconnect the B52 motor temperature sensor connector.
(c) Turn the power switch on (IG).

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

NOTE: Turning the power switch on (IG) with the hybrid vehicle control ECU connectors disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.
HINT: The motor temperature sensor is not available separately. If it requires replacement, replace the hybrid vehicle transaxle assembly.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY
5. INSPECT MOTOR TEMPERATURE SENSOR

(a) Disconnect the B1 connector from the hybrid vehicle control ECU.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:

NG -- CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - MOTOR TEMPERATURE SENSOR)
OK -- REPLACE HYBRID VEHICLE CONTROL ECU
6. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - MOTOR TEMPERATURE SENSOR)
(a) Disconnect the B1 connector from the hybrid vehicle control ECU.
(b) Disconnect the B52 motor temperature sensor connector.

Standard resistance:

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

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY