Air Conditioning System

DIAGNOSTIC TROUBLE CODE CHART

B1400 - B1441/41:

B1442/42 - B1443/43:

HINT:
- *1: If the room temperature is approx. -20 °C (-4 °F) or lower, DTC B1411 may be output even though the system is normal.
- *2: If the ambient temperature is approx. -50 °C (-58 °F) or lower, a DTC may be output even though the system is normal.
- *3: If the check is being performed in a dark place, DTC B1421 (solar sensor circuit abnormal) could be displayed. In this case, perform DTC check again while shining a light, such as an inspection light, on the solar sensor. If DTC B1421 is still displayed, there could be trouble in the solar sensor circuit.
- *4: Compressor lock (DTC B1422) is indicated only for a current malfunction. To confirm DTC B1422, perform the following steps.
1. With the engine ON, enter the DTC check mode.