Chart 17

Cooling System Concerns:

Electric Cooling Fan(s) Always Runs

NOTE: This chart is intended to only diagnose an electric cooling fan that always runs with a "cool" engine and the A/C and defroster off.

SYSTEM/COMPONENT	REFERENCE ( PINPOINT TEST - CNG, FLEX-FUEL & GASOLINE ) unless noted
Cooling fan circuits and ACPSW or ACP circuits	Crown Victoria/Grand Marquis, Thunderbird, LS6/LS8 and Town Car: VERIFY results of Quick Test. Visually inspect cooling fan for concerns. Freestar/Monterey, Aviator: Go to Cooling System check below (also check for over-pressurized A/C system) 3.8/3.9L Mustang: GO to X: Constant Control Relay Module (CCRM) STEP X39. 4.6L Mustang: GO to X: Constant Control Relay Module (CCRM) STEP X37. All others: GO to F: Fan Control relays STEP KF55.
Cooling System	Engine Cooling - Refer to the appropriate ENGINE COOLING article.

SYSTEM/COMPONENT

REFERENCE ( PINPOINT TEST - CNG, FLEX-FUEL & GASOLINE ) unless noted

Cooling fan circuits and ACPSW or ACP circuits

Crown Victoria/Grand Marquis, Thunderbird, LS6/LS8 and Town Car:
VERIFY results of Quick Test. Visually inspect cooling fan for concerns.
Freestar/Monterey, Aviator:
Go to Cooling System check below (also check for over-pressurized A/C system)
3.8/3.9L Mustang:
GO to X: Constant Control Relay Module (CCRM) STEP X39.
4.6L Mustang:
GO to X: Constant Control Relay Module (CCRM) STEP X37.
All others:
GO to F: Fan Control relays STEP KF55.

Cooling System

Engine Cooling - Refer to the appropriate ENGINE COOLING article.