BCM - Code F41 Coolant Temp/Fan Telltale ON Intermittent

88cadillac11

Bulletin No. T-89-18
File in Group 8
Number 86
Corp. Ref. No. 818112
Date Sept. 1988
SUBJECT: COOLANT TEMP/FAN TELLTALE ON INTERMITTENTLY AND CODE F41 SET

MODELS AFFECTED: 1988 DE VILLES AND FLEETWOODS


Some 1988 DeVilles and Fleetwoods may turn the Coolant Temp/Fan telltale on intermittently and set BCM code F41. Code F41 was eliminated on 1988 DeVilles and Fleetwoods with the elimination of the cooling fan module. However, if the incorrect BCM PROM is installed in these vehicles, code F41 may set as a result.

To check for an incorrect BCM PROM, check BCM parameter P.3.1 BCM PROM I.D. The correct BCM PROM I.D. for 1988 DeVilles and Fleetwoods is 22 or 23. If the BCM PROM I.D. is less than 22 (i.e., 20 or 21), replace the BCM PROM with the proper one as listed in the parts catalog, Section 3.670.

For warranty purposes use Labor Operation N4801 at .4 hour for BCM PROM replacement.