CIRCUIT
NO.
WIRE
SIZE
COLOR
CAVITY
DESCRIPTION
4 6 5
.8
DK G R N /W H T
A1
FUEL PU M P RELAY DRIVE
A 2
N O T USED
A 3
N O T USED
4 3 5
.8
GRA
A 4
EVRV
4 1 9
.8
B R N /W H T
A 5
S Y S T E M C H EC K L A M P
4 3 9
1 .0
PNK/BLK
A 6
1 2 V IG N ITIO N FUSED
* 4 2 2
.8
T A N /B L K
A 7
M 4 0 K IC K D O W N RELAY
4 5 6
.8
T A N /B L K
A 7
U PSH IFT M A N - O N L Y
4 6 1
.8
ORN
A 8
SERIAL D A T A
4 5 1
.8
W H T /B L K
A 9
ASS Y LINE DIAG/LINK
4 3 7
.8
BRN
A 1 0
SPEED SENSOR
4 5 2
.8
BLK
A 1 1
5 V S Y S T E M RETURN A
4 5 0
1 .0
B L K /W H T
A 1 2
S Y S T E M RETURN
4 4 0
1 .0
ORN
B1
1 2 V B A TTE R Y FUSED
1 2 0
2 .0
T A N /W H T
B2
ELEC FUEL P U M P FUSED FEED
4 5 3
.8
BLK/RED
B3
D IS TR IB U TO R REF LO W
B 4
N O T USED
4 3 0
.8
P P L/W H T
B5
D IS TR IB U TO R REF HIGH
B6
N O T USED
4 8 5
.8
BLK
B7
SPAR K RETARD C O N TR O L
B8
N O T USED
B9
N O T USED
* 4 3 4
.8
O R N /BLK
B 1 0
P A R K /N E U T R A L S W IT C H
B 1 1
N O T USED
B 1 2
N O T USED
*
A U T O T R A N S O N LY
ELECTRO NIC C O N T R O L M O D U LE
L 0 5 - V 8 TBI
SECTION E - PAGE 3 4
CIRCUIT
NO.
WIRE
SIZE
COLOR
CAVITY
DESCRIPTION
C1
NOT USED
4 3 6
.5
BRN
C 2
AIR S W SOLENOID
4 4 4
.8
LT G R N /BLK
C 3
STEPPER COIL B LO W
4 4 3
.8
LT G R N /W H T
C 4
STEPPER COIL B HIGH
4 4 1
.8
LT B L U /W H T
C 5
STEPPER COIL A HIGH
4 4 2
.8
LT B LU /B LK
C 6
STEPPER COIL A LO W
C 7
NOT USED
C 8
NOT USED
9 0 6
.8
PPL
C 9
CRANK DISCRETE FUSED
4 1 0
.8
YEL
C 1 0
C O O LA N T TEM PERATURE
4 3 2
.8
LT GRN
C 1 1
M A N IF O LD A B S O LU TE PRESS
C 1 2
NOT USED
4 1 7
.8
DK BLU
C 1 3
THROTTLE PO SITIO N SENSOR
4 1 6
.8
G RA
C 1 4
5 V SENSOR REFERENCE
4 6 8
.8
LT GRN
C 1 5
INJECTO R B DRIVE
4 4 0
1 .0
ORN
C 1 6
1 2 V BATTER Y FUSED
4 5 0
1 .0
B L K /W H T
D1
SYSTEM RETURN
4 5 5
.8
PPL
D 2
5 V RETURN A
D 3
NOT USED
4 2 3
.8
W H T
D 4
HEI SPARK T IM IN G
4 2 4
.8
T A N /B L K
D 5
HEI BYPASS
4 1 3
.8
T A N
D 6
O XYGEN SENSOR LO W
4 1 2
.8
PPL
D 7
O XYGEN SENSOR HIGH
D 8
NOT USED
D 9
NOT USED
D 1 0
NOT USED
D 1 1
NOT USED
D 1 2
NOT USED
D 1 3
NOT USED
4 6 8
.8
LT GRN
D 1 4
INJECTOR B DRIVE
4 6 7
.8
LT BLU
D 1 5
INJECTOR A DRIVE
4 6 7
.8
LT BLU
D 1 6
INJECTOR A DRIVE
Summary of Contents for ST 350 1988
Page 1: ...1988 LIGHT DUTY TRUCK WIRING DIAGRAM BOOKLET ST 350 88...
Page 2: ......
Page 18: ......
Page 20: ...V SECTION A PAGE 10...
Page 33: ......
Page 38: ...SECTION A PAGE 28...
Page 41: ......
Page 47: ...SECTION A PAGE 37...
Page 50: ......
Page 54: ......
Page 57: ...TRANSFER CASE SPEED SENSOR FOUR WHEEL DRIVE SECTION A PAGE 47...
Page 76: ......
Page 87: ...FUSE BLOCK START L B 4 V 6 L03 L05 L 1 9 V 8 SECTION B PAGE 13...
Page 89: ...SPLICE 33 FUSE BLOCK START 8 CYL LT9 N A 5 V 8 SECTION B PAGE 15...
Page 90: ...SECTION B PAGE 16...
Page 91: ...FORWARD REAR BATTERY BATTERY FUSE BLOCK START LL4 LH6 DIESEL SECTION B PAGE 17...
Page 100: ...GLOW PLUGS LL4 DIESEL SECTION B PAGE 26...
Page 101: ...PRODUCTION JUNCTION BLOCK GLOW PLUGS LH6 DIESEL SECTION B PAGE 27...
Page 104: ......
Page 124: ...43 8 YEL INSTRUMENT PANEL LAMPS TELLTALE SECTION B PAGE 50...
Page 125: ...ILLUM ILLUM ILLUM ILLUM ILLUM 43 8 YEL INSTRUMENT PANEL LAMPS GAGE SECTION B PAGE 51...
Page 128: ......
Page 131: ...IGNITION SWITCH IN D IC ATO R LA M PS TELLTALE S E C T IO NB PAGE5 7...
Page 133: ...8917693 IGNITION SWITCH INDICATOR LAMPS GAGE SECTION B PAGE 59...
Page 141: ...60 1 0 ORN BLK POWER DOOR LOCKS W ITH DELAY MODULE RPO AU 3 SECTION B PAGE 67...
Page 144: ...SECTION B PAGE 70...
Page 169: ......
Page 171: ..._ n n _ BATTERY FRONT FUSE BLOCK REAR START 6 CYL LL2 SECTION C PAGE 19...
Page 172: ......
Page 173: ...CONVENIENCE CENTER FRONT REAR FUSE BLOCK IGNITION 4 CYL SECTION C PAGE 21...
Page 177: ...FRONT REAR FUSE BLOCK IGNITION 6 CYL LB4 SECTION C PAGE 25...
Page 181: ......
Page 185: ...452 8 BLK 452 8 BLK TO ECM LN8 4 CYL ELECTRONIC CONTROL MODULE INPUTS SECTION C PAGE 33...
Page 187: ...TO ECM 120 1 0 TAN WHT 30 8 PNK LN8 4 CYL ELECTRONIC CONTROL MODULE OUTPUTS SECTION C PAGE 35...
Page 188: ...SECTION C PAGE 36...
Page 194: ...SECTION C PAGE 42...
Page 200: ...SECTION C PAGE 48...
Page 218: ......
Page 223: ...RADIO EQUIPMENT SECTION C PAGE 71...
Page 228: ...VANITY MIRROR RPO D64 SECTION C PAGE 76 12047781 141 8 BRN WHT H H VISOR VANITY MIRROR...
Page 242: ......
Page 248: ...SECTION D PAGE 6...
Page 263: ...TO PARK BRAKE WARNING SW l P CLUSTER CONN FUSE BLOCK START L25 V6 LE8 LT9 V8 SECTION D PAGE 21...
Page 269: ...CONVENIENCE CENTER l P CLUSTER CONN FUSE BLOCK IGNITION L05 L1 9 V 8 SECTION D PAGE 27...
Page 272: ...SPLICE 150 4 v J U U i FUEL SHUT OFF VALVE SEE PAGE GLOW PLUGS L L 4 DIESEL SECTION D PAGE 30...
Page 282: ...SECTION D PAGE 40...
Page 286: ......
Page 287: ...TO ECM ELECTRONIC CONTROL MODULE OUTPUTS L05 L19 V8 SECTION D PAGE 45...
Page 288: ...SECTION D PAGE 46...
Page 300: ...SECTION D PAGE 58...
Page 322: ...SECTION D PAGE 80...
Page 336: ...POWER DISTRIBUTION L 2 5 6 CYL BODY STYLE 4 2 SECTION E PAGE 2 FRONT FUSE BLOCK REAR...
Page 338: ...POWER DISTRIBUTION LT9 V 8 BODY STYLE 4 2 SECTION E PAGE 4 FUSE BLOCK REAR...
Page 339: ...3 2 BLK BATT CABLE FRONT FUSE BLOCK REAR POWER DISTRIBUTION L 0 5 V 8 SECTION E PAGE 5...
Page 349: ...WIPER WASHER SECTION E PAGE 15...
Page 351: ...pS A s L BATTERY FRONT REAR START IGNITIOIM LE8 V8 BODY S T Y L E 3 2 SECTION E PAGE 17...
Page 352: ...START IGNITION LT 9 V 8 BODY S T Y L E 4 2 SECTION E PAGE 18 FRONT REAR...
Page 356: ...SECTION E PAGE 22...
Page 363: ...FUEL SHUT OFF VALVE 12020274 GLOW PLUGS LL4 DIESEL SECTION E PAGE 29...
Page 365: ...TO ECM ELECTRONIC CONTROL M O D U LE IN P U T S L 0 5 V 8 SECTION E PAGE 31...
Page 367: ...TO ECM 439 8 PNK BLK ELECTRONIC CONTROL M O D U LE O U T P U T S L 0 5 V 8 SECTION E PAGE 33...
Page 374: ...SECTION E PAGE 40...
Page 386: ......
Page 387: ...l P CLUSTER CONN R H TAIL STOP 8 9 1 7 8 1 8 DIRECTIONAL LAMP HAZARD LAMPS SECTION F PAGE 9...
Page 389: ...R H TAIL STOP 8 9 1 7 8 1 8 DIRECTIONAL LAMP DIRECTIONAL LAMPS SECTION F PAGE 11...
Page 393: ...1 9 0 BLK l P JUNCTION BLOCK START 6 CYL SECTION F PAGE 15...
Page 396: ...ELECTRONIC CONTROL MODULE CONNECTORS TO STARTER IGNITION 6 CYL SECTION F PAGE 18...
Page 406: ...SECTION F PAGE 28...
Page 412: ...SECTION F PAGE 34...
Page 422: ......
Page 423: ...l P CLUSTER CONN INSTRUMENT PANEL LAMPS ELECTRONIC SECTION F PAGE 45...
Page 441: ......
Page 453: ......
Page 454: ...CHEVROLET I i...