Riviera V6-231 3.8L VIN L SFI (1991)
Alarm Module: Technical Service Bulletins
Electrical - No Start Or No Crank With BCM Code 334
Group Ref.: Chassis/Body Electrical
Bulletin No.: 318113
Date: November, 1993
SUBJECT:
CRANK (OR NO CRANK), NO START AND/OR BCM CODE 334 (REPAIR FUSIBLE LINK SPLICE)
MODELS:
1986-93 BUICK RIVIERAS
1986-91 CADILLAC ELDORADOS
1986-91 CADILLAC SEVILLES
1986-92 OLDSMOBILE TORONADOS
Condition:
Some owners of 1986-1989 Cadillac Eldorados and Sevilles, and 1986-1993 Buick Rivieras and 1986-1992 Oldsmobile Toronados may experience a
condition of a crank but no start and possibly a BCM code 334 set; or some 1990-1991 Eldorados, Sevilles, and 1986-1993 Rivieras or 1986-1992
Toronados may experience a no crank and no start condition and possibly a BCM code 334 set. This condition may be caused by a corroded splice on
circuit 480 at fusible link B (Cadillac) or fusible link J (Riviera and Toronado), located at the ISO power junction block. Refer to Figure 1.
Cause:
Circuit 480 and fusible link B or J is the "HOT AT ALL TIMES" feed to the ECM on all model years. In 1990, circuit 480 and fusible link B or J also
became the "HOT AT ALL TIMES" feed to the PASSKey module. This is the reason for the addition of the no crank condition to the 1990-1993 model
years.
Correction:
To repair this condition repair fusible link splice as outlined in Section 8A-5 of the Service Information Manual.
