DTC B1492/92 Infrared Ray Sensor Communication Malfunction: Description
WARNING: This page is about a different car, the 2008 Lexus LS 600hL. However, it is still accessible from the selected car via links, so may be relevant.
This circuit consists of the infrared ray sensor and the air conditioning amplifier The infrared ray sensor, which is installed on the rear roof, detects human body temperature and controls the heater and air conditioner "AUTO" mode in 4 zone Signals are transmitted to the air conditioning amplifier via LIN communication line This DTC is output when LIN communication between the infrared ray sensor and air conditioning amplifier stop for 10 seconds or more If the LIN communication system malfunctions, the air conditioning amplifier does not operate even if the infrared ray sensor is normal
DTC DETECTION CONDITION CHART
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| B1492/92 | Open in LIN communication line |
|