Toyota Prius 2010 Repair Manual page 83

DTC B1413/13 Evaporator Temperature Sensor Circuit
DESCRIPTION
The evaporator temperature sensor is installed on the evaporator in the air conditioning unit to detect the cooled
air temperature that has passed through the evaporator and to control the air conditioning. It sends appropriate
signals to the A/C amplifier. The resistance of the evaporator temperature sensor changes in accordance with
the cooled air temperature that has passed through the evaporator. As the temperature decreases, the resistance
increases. As the temperature increases, the resistance decreases.
The A/C amplifier applies voltage (5 V) to the evaporator temperature sensor and reads voltage changes as the
resistance of the evaporator temperature sensor changes. This sensor is used for frost prevention.
DTC No.
B1413/13 Open or short in evaporator temperature sensor circuit
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
1. READ VALUE USING TECHSTREAM
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
2010 Toyota Prius
DTC Detection Condition Trouble Area
Evaporator temperature sensor
Air conditioning harness
A/C amplifier
Repair Manual