DTC B1350: Engine Coolant Over-Temperature Condition: Notes
WARNING: This page is about a different car, the 1998 Cadillac Eldorado and 1998 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.
DTC B1350 is designed to disengage A/C compressor clutch if coolant temperature exceeds 258°F (126°C). A/C-heater programmer receives coolant temperature information from PCM over class 2 serial data line. While DTC B1350 is current, IPC will display ENGINE HOT - A/C COMPRESSOR OFF warning on Driver Information Center (DIC).