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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 90 (Heating / Air Conditioning System (HV) - Diagnostic Codes (1 Of 3)) >> AIR CONDITIONING SYSTEM (for HV Model) >> DTC B141A-11: Room Temperature Sensor Circuit Short to Ground [11/2023 - ] >> Description

DTC B141A-11: Room Temperature Sensor Circuit Short to Ground [11/2023 - ]: Description

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

The room temp. sensor (cooler thermistor) is installed in the instrument panel to detect the cabin temperature, which is used to control the air conditioning system. The resistance of the room temp. sensor (cooler thermistor) 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 to the room temp. sensor (cooler thermistor) and reads voltage changes due to changes in the resistance of the room temp. sensor (cooler thermistor).

DTC No. Detection Item DTC Detection Condition Trouble Area Memory DTC Output from Priority
B141A-11 Room Temperature Sensor Circuit Short to Ground Diagnosis Condition:
  1. Ignition switch ON

Malfunction:

  1. Short (GND) in room temperature sensor circuit

Detection Time:

  1. Continuously for 4 seconds or more
  • Room temp. sensor (cooler thermistor)
  • Harness or connector
  • Air conditioning amplifier assembly
 Memorized Air Conditioner A
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