DTC B1411: Room Temperature Sensor Circuit [11/2018 - 02/2019]: Description

WARNING: This page is about a different variant/trim than selected.

The cooler thermistor (room temperature sensor) is installed in the instrument panel to detect the cabin temperature, which is used to control the air conditioning system. The resistance of the cooler thermistor (room temperature sensor) changes in accordance with the cabin temperature. As the temperature decreases, the resistance increases. As the temperature increases, the resistance decreases.

The air conditioning amplifier assembly applies voltage (5 V) to the cooler thermistor (room temperature sensor) and reads voltage changes due to changes in the resistance of the cooler thermistor (room temperature sensor).

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Memory
B1411	Room Temperature Sensor Circuit	Diagnosis condition: Ambient temperature is -30°C (-22°F) or more Malfunction status: Open or short in room temperature sensor circuit Detection time: None (Present malfunction), continuously for 4 seconds or more (Past malfunction)	Cooler thermistor (room temperature sensor) Harness or connector Air conditioning amplifier assembly	Memorized

HINT:

If the cabin temperature is approximately -18.6°C (-1.48°F) or lower, DTC B1411 may be output even though the system is normal.