B450

Temperature Circuit:

CIRCUIT DESCRIPTION:

Code B450 is designed to disengage the A/C compressor clutch if the engine coolant temperature exceeds 126°C (261°F) and re-engage the clutch when coolant temperature falls below 120°C. If code E014 is also stored, follow diagnosis for that code first. Engine overheating may accompany this code. If coolant temperature exceeds normal operation range, check for sources of overheating. Carefully check all sources of intermittent engine overheating such as improper cooling fan operation, faulty belt or belt tension, coolant level and restrictions, or faulty hoses and hose routings.