Crown Victoria V8-4.6L VIN W (2000)
Part 2 Of 2
System Response
a
If engine coolant temperature fails to reach 50°C (122°F) after 3-1/2 minutes of operation, the heater blower motor speed will increase and the
windshield defroster door will shift from defrost position to floor position.
b
The A/C system is enabled by the EATC control assembly, but final control of the A/C compressor clutch is determined by the Powertrain Control
Module (PCM) through the use of a normally open clutch control relay. The A/C clutch can be shut off (or kept off) for several seconds at engine
start-up, during high engine speeds, during low engine idle conditions (approximately 200 rpm below idle specs) and when the engine coolant
temperature sensor reading exceeds approximately 120°C (248°F).
