Electrical - Manual Update, Various Systems
9226buick02
Bullein: 89-8-30
Date: Feb. '90
Ref. No.: 89-272-8
Corp. Ref. No.: 008104
SUBJECT:
SERVICE MANUAL UPDATE - SECTION 8A- ELECTRICAL DIAGNOSIS
MODELS AFFECTED:
1989 BUICK REGAL
These pages reflect product changes.
8A-1-0 INDEX
8A-1-1 INDEX
8A-10-0-A POWER DISTRIBUTION
8A-11-8-A FUSE BLOCK DETAILS: COMPONENT CENTER
8A-12-3-A LIGHT SWITCH DETAILS
8A-14-0 GROUND DISTRIBUTION: G101
8A-14-1-A GROUND DISTRIBUTION: G103 and G303
8A-14-2-A GROUND DISTRIBUTION: G103
8A-14-6 GROUND DISTRIBUTION: G305
8A-14-7-A GROUND DISTRIBUTION: G306
8A-14-8-A GROUND DISTRIBUTION: G102 and G106
8A-22-4-A MULTI-PORT FUEL INJECTION: V6 VIN T Engine Data Sensors
8A-22-6 MULTI-PORT FUEL INJECTION: V6 VIN T Electronic Exhaust Gas
Recirculation (EEGR), vapor canister purge solenoid
8A-22-7 MULTI-PORT FUEL INJECTION: V6 VIN W, V6 VIN T, Idle Air
Control
8A-33-2 VEHICLE SPEED SENSOR
8A-33-3 VEHICLE SPEED SENSOR
8A-44-0 ANTILOCK BRAKE SYSTEM
8A-44-1-A ANTILOCK BRAKE SYSTEM
8A-51-1 DATA LINE ECM
8A-60-1 HEATER: C40
Air Delivery and temperature controls
8A-64-4 AIR CONDITIONING: C67
Compressor Controls
8A-64-5 AIR CONDITIONING: C67
Compressor Controls
8A-104-4A HEADLIGHTS AND FOGLIGHTS: With T61
8A-114-0 INTERIOR LIGHTS: Cigar lighter, I/P compartment light,
underhood light, luggage compartment light and vanity mirror
light
8A-115-0-A KEY CYLINDER LIGHT
8A-115-1-A KEY CYLINDER LIGHT
8A-115-2-A KEY CYLINDER LIGHT
8A-120-0 POWER WINDOWS
8A-120-2 POWER WINDOWS
8A-120-3 POWER WINDOWS
8A-130-0 POWER DOOR LOCKS
8A-132-1 KEYLESS ENTRY
8A-132-8 KEYLESS ENTRY
8A-140-0-A POWER SEATS
8A-146-0-A AUTOMATIC SAFETY BELTS
8A-146-1-A AUTOMATIC SAFETY BELTS
In addition, the following pages should be revised to reflect minor changes for late production, as noted:
8A-10-3 Change the RED/WHT (2) wire to 3 RED (2)
8A-11-0 Change terminal B of the Turn Flasher to terminal A.
Change terminal C of connector C1 to C of C2 on the Daytime
Running Lights (DRL) Module.
8A-11-1 Change the .8 ORN (740) wire between Fuse 7 Horn Fuse and
Connector C150 terminal F2 to .8 LT BLU/BLK (740).
Change terminals C1 and C5 of the Horn Relay to B1 and B5.
8A-11-3 Change the .5 PNK/BLK (439) wire between connector C100
terminal C2 and terminal B10 of the Electronic Control Module
(ECM) to .8 PNK/BLK (439).
8A-11-4 Change all .8 ORN/DK BLU (340) wires from splice S324 to .8
ORN.
8A-11-5 Change the .5 WHT/BLK (343) wire between Fuse 17 PRNDL Fuse and
terminal C15 of connector C1 to .8 WHT/BLK (343).
Change terminal 4 of the Heater and A/C Control Assembly to
terminal 4 of connector C1.
8A-11-11 Change Electronic Vacuum Regulator Valve (EVRV) to Electronic
Exhaust Gas Recirculation (EEGR) Assembly.
Change terminal B of the Electronic Exhaust Gas Recirculation
(EEGR) Assembly to terminal D.
8A-12-0 Change terminal P of the Light Switch to terminal 0.
Change terminal B2 of the Foglight Relay to C2.
8A-12-1 Delete the Daylight Running Lights (DRL) Module and the .8 BRN
(9) wire. Change all .8 BRN/WHT (9) wires to .8 BRN (9).
8A-12-2 Change the 2 YEL (307) wire to 2 YEL (907).
Change terminal P of the Light Switch to terminal 0.
Change terminal B2 of Foglight Relay to terminal C2.
8A-12-4 Change all .8 GRY (8) wires from splice S302 to .5 GRY (8).
8A-22-0 Change .5 PNK/BLK (439) wire between connector C100 terminal C2
and terminal B10 of the Electronic Control Module (ECM) to .8
PNK/BLK (439).
Change terminal CL of the Electronic Control Module (ECM) to
terminal C6.
8A-22-1 Change terminal C1 of the Direct Ignition System (D15) to A of
connector C1.
8A-22-3 Change the 1 TAN/WHT (120) wire between terminal A2 of C100 and
terminal 4N of connector C200 to 1 GRY (120).
Change See Ground Distribution Cell 11 to See Fuse Block
Details Cell 11.
8A-30-0 Change the 3 RED/WHT (2) to 3 RED (2).
Change the .5 BRN/WHT (25) wire between terminal G2 of
connector C102C and terminal G of connector C102 to .5 BRN (25).
8A-31-0 Change the .8 DK GRN/WHT (335) wire to .5 DK GRN/WHT (335).
Change the .8 DK BLU/WHT (473) wire to .5 DK BLU/WHT (473).
8A-31-1 Change the .8 LT GRN/BLK (536) wire to .5 LT GRN/BLK (536).
Change all .8 BLK (452) wires from splice S122 to .5 BLK (452).
8A-31-2 Change .5 BLK/WHT (450) wire to .8 BLK/WHT (450).
Change all .8 BLK (452) wires from splice S122 to .5 BLK (452).
Change .8 DK GRN/WHT (335) wire to .5 DK GRN/WHT (335).
8A-34-0 Change .8 GRY/BLK (87) wires to .5 GRY/BLK (87).
8A-34-1 Change .5 BLK (150) wire to .5 BLK (152).
8A-40-0 Change .8 ORN (740) wire to .8 LT BLU/BLK (740).
Change terminals C1, C2, C4, and C5 of the Horn Relay to B1,
B2, B4, and B5.
8A-41-0 Change .8 BLK (150) wire and 1 BLK (150) wire to .8 BLK
(152) and 1 BLK (152).
8A-44-2 Add S189....ABS Harness, below RH front seat....201-15-B.
8A-51-3 Add S189....ABS Harness, below RH front seat....201-15-B.
8A-60-0 Change the .5 ORN (52) wire to 1 ORN (52).
8A-60-2 Add another .5 PNK/WHT (350) wire from Fuse 18 A/C referring to
Fuse Block Details Cell 11.
8A-63-0 Change .5 ORN (52) wire to 1 ORN (52).
8A-64-0 Change .5 DK GRN/YEL (459) wire to .5 DK GRN/WHT (459).
8A-65-0 Add another .5 PNK/WHT (350) wire from Fuse 18 A/C 1 referring
to Fuse Block Details Cell 11.
8A-76-0 Change .8 BLK/LT GRN (238) wire to .5 BLK/PNK (238).
Change all .8 BLK (150) wire to .5 BLK (150).
8A-80-1 Change terminal P of the Light Switch to terminal 0.
8A-80-2 Change .8 PPL (30) wire to 1 PPL (30).
8A-81-0 Change .5 WHT/BLK (343) wire to .8 WHT/BLK (343).
8A-81-1 Change .8 PPL (30) wire to 1 PPL (30).
8A-81-4 Change terminals C12 and D14 of the Electronic Instrument
Cluster to D1 and C14.
8A-90-0 Change 1 BLK (150) wire to 1 BLK (152).
8A-91-0 Change 1 BLK (150) wire to 1 BLK (152).
8A-100-1 Change terminals C1, C2, C4, and C5 of the Foglight Relay to
B1, B2, B4, and B5.
8A-104-8 Change (YEL/BLK) wires to (YEL) and (PNK/BLK) wires to
(PNK/WHT).
8A-110-0 Change terminals A and B of the Turn Flasher to B and A.
8A-110-1 Change .8 BLK/WHT (150),wires from splices S402 and S403 to .8
BLK (150).
8A-110-2 Change terminals A and B of the Turn Flasher to terminals
B and A.
8A-110-3 Change .8 BLK/WHT (150) wires from splices S402 and S403 to .8
BLK (150).
8A-110-5 Change .8 BRN/WHT (9) wires to .8 BRN (9).
Change .8 BLK/WHT (150) wires to .8 BLK (150).
8A-112-0 Change .8 LT GRN/WHT (24) wire to .8 LT GRN (24).
Change .8 BLK/WHT (150) wires to .8 BLK (150).
8A-114-3 Add G303....under RH Front Seat....201-15-C.
8A-117-0 Change terminal P of the Light Switch to terminal 0.
8A-117-1 Change .8 GRY (8) wires to .5 GRY (8).
8A-120-1 Add S231....I/P harness, behind RH side of I/P....201-9-A.
8A-130-1 Add S308....LH door harness, inside front of door....201-18-A.
8A-132-2 Change terminals C and E of the LH Master Switch Assembly to
terminals E and C.
Change connector C302 to C304.
Change terminals C and E of the RH Switch Assembly to terminals E and C.
8A-132-5 Change PPL (900) wire to BLK/YEL (900).
8A-134-0 Change .8 LT GRN/WHT (24) wire to .8 LT GRN (24).
Change all wires from splice S410 to 1 BLK (142).
Change .8 BLK (142) wire to the Release Solenoid to 1 BLK (142).
8A-150-1 Change .8 BLK/LT BLU (153) wires to .5 BLK/LT BLU (153).
8A-150-2 Change .8 BLK/LT BLU (153) wires to .5 BLK/LT BLU (153).
Change the following wires:
.5 BLK/WHT (152) to .5 BLK (152)
.5 DK GRN/WHT (835) to .5 DK GRN (152)
.5 PPL/YEL (724) to .5 PPL/WHT (724)
Change the .8 DK GRN (835) wire to .5 DK GRN (835).
Change the .5 BRN (726) wire to .5 YEL (726).
8A-150-4 Change the following wires:
.5 ORN/BLK (640) to .5 ORN (640)
.5 YEL/BLK (43) to .5 YEL (43)
.5 DK GRN/ORN (606) to .5 DK GRN/WHT (606)
.5 WHT/DK GRN (607) to .5 WHT/BLK (607)
Change .8 BLK/LT BLU (153) wires to .5 BLK/LT BLU (153).
8A-150-6 Change .8 BLK/LT BLU (153) wires to .5 BLK/LT BLU (153).
8A-151-0 Change the .8 PNK (143) wire from terminal 18 of C1 of the
Radio Receiver to terminal 18 of C207 to .5 PNK/BLK (143).
Delete one of the 5 ORN/BLK (60) wires from splice S300 to the
power seats.
Change the 2 ORN/BLK (60) wire to 2 ORN (60).
8A-201-15 Add splice S189 next to splice S229.