DTC B1469/69 Infrared Ray Sensor Circuit: Description

The infrared ray sensor, which is installed on the rear roof, detects human body temperature and control the heater and air conditioner "AUTO" mode in 4 zones. Signals are transmitted to the air conditioning amplifier via the LIN communication line. This DTC is output when the temperature of the physical object is detected as -30°C (-22°F) or less, or 80°C (176°F) or more for 10 seconds or more.