Cutlass Ciera Cruiser V6-3300 3.3L (1989)
Ignition Control Module: Technical Service Bulletins
Engine Controls - Updated Charts A3, C4H & DTC 42 Wiring
SUBJECT
SERVICE MANUAL UPDATE - SECTION 6E-
DRIVEABILITY AND EMISSIONS/WRONG WIRE
COLORS TO C31 MODULE
MODELS/YEARS
1989 3300 (VIN N) CUTLASS CIERA AND CUTLASS
CALAIS MODELS
NUMBER:
89-T-50
CORP.REF.NO: 916506R
DATE:
March 1989
SECTION:
6E
Several instances of alternate wire colors going to the C3I module on 1989 Cutlass Ciera and Cutlass Calais vehicles equipped with a 3300 (VIN N)
engine have been reported. This would effect wire colors on diagnostic Chads A-3, C-4H-1, C-4H-2, and Code 42 Chad found in Section 6E
"Driveability and Emissions" of the Service Manual. It would also effect the wire colors on the ECM Wiring Diagrams at the front of Section 6E3-A
"Driveability and Emissions" and Section 8A "Electrical Diagnosis", page 8A-21-1.
On vehicles that have the alternate wire colors, the circuits remain the same. If the colors do not match that of the Service Manual, they may be as
follows:
C3I
Circuit
Connector
Number
Original Color
Alternate Color
A
423
WHT
WHT
B
424
TAN/BLK
TAN/BLK
C
430
PPL/WHT
PPL/WHT
D
453
BLK/RED
BLK/RED
E
121
WHT
WHT
F
646
LT BLU/WHT
WHT/BLK
G
645
GRY/RED
DK BLU/WHT
H
644
WHT/BLK
LT BLU/WHT
K
643
DK BLU/WHT
GRY/RED
Cutlass Calais only
M
239
PNK/WHT
PNK/BLK
Cutlass Ciera only
M
839
PNK/WHT
PNK/BLK
