P0A2D

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

DESCRIPTION

DTC Detection Condition:

The resistance of the thermistor, which is enclosed in the No. 1 motor temperature sensor, changes in accordance with the changes in the temperature of the motor. The lower the motor temperature, the higher the resistance of the thermistor. Conversely, the higher the temperature, the lower the resistance.

The No. 1 motor temperature sensor is connected to the HV control ECU. The power voltage of 5 V is supplied from the MMT terminal of the HV control ECU to the No. 1 motor temperature sensor via resistor R. Because resistor R and the No. 1 motor temperature sensor are connected in series, the resistance changes with the changes in temperature of the motor, which causes the MMT terminal voltage to also change.

Based on this signal, the HV control ECU limits the load in order to prevent the motor from overheating.

Furthermore, the HV control ECU checks the No. 1 motor temperature sensor for a wiring malfunction and the sensor for a malfunction.






HINT: After confirming DTC P0A2C (INF 247) or P0A2D (INF 249), confirm MOTOR 1 TEMP in DIAGNOSIS / OBD/MOBD / HV ECU / DATA LIST using the intelligent tester.

Wiring Diagram:

Step 1:

Step 2-3:

Step 3(Continued)-4:

Step 4(Continued)-6:

Step 6(Continued):

INSPECTION PROCEDURE