Cooling Fan Controller - System Changes
86ford16Article No. 86-11-6
FAN COOLING CONTROLLER SYSTEM CHANGES - 2.3L EFI TURBO BUILT AFTER 5/1/86
FORD 1986 THUNDERBIRD
LINCOLN-MERCURY 1986 COUGAR
The cooling fan A/C system operations have been revised. This information is different than the Shop Manual description in Section 27-10. These changes will appear in the 1987 model Shop Manual.
Cooling Fan A/C Control Module Changes
^ Fan control relay changed to allow it to carry more fan motor current (3 amp).
^ Fan cycling reduced.
^ Fan controller complexity reduced.
^ No A/C clutch operation when there is no voltage at the fan motor output terminal (No. 5) in the fan control module.
Cooling Fan and A/C Operation (Logic) Changes
^ The A/C cycling pressure switch will energize the fan motor and A/C clutch when the A/C panel switch is first turned on, but from then on the pressure switch will only cycle the A/C clutch.
^ The cooling fan motor will no longer cycle with the A/C cycling pressure switch.
^ The fan motor will continue to run during normal pressure switch cycling intervals, but will shut-off if the A/C switch circuit is open for more than two minutes (example: panel switch turned off).
^ When the coolant temperature switch closes it will override A/C fan functions and cause the cooling fan to run all the time until the coolant switch opens.
^ The cooling fan will continue to run during a Wide Open Throttle (WOT) acceleration.
^ The A/C clutch will not operate unless there is voltage available for the cooling fan motor.
OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: "INFORMATION ONLY"