Hummer H1 (2006+). Manual — part 396
12-260
Electrical System
______________________________________________________
C81/ 24 WAY ENGINE CONNECTOR HARNESS LOCATION: ON TOP OF ENGINE
PIN
CKT
COLOR
DESCRIPTION
A1
--
--
--
A2
--
--
--
A3
105
BR/WH
EGR valve position signal
A4
--
--
--
A5
--
--
--
A6
612
WH/BK
Baro pressure (5 volt signal)
A7
255
OR/BK
Baro sensor
A8
613
GY/BK
Baro sensor signal
B1
212
DG
SAE J1939 CAN LO
B2
--
--
--
B3
107
BK
EGR stepper motor
B4
362
DB
Turbocharger vane position control solenoid valve high
B5
363
WH
Turbocharger vane position control solenoid valve low
B6
367
GY
5v Ref for the turbo vein position sensor
B7
369
BR
VNT position sensor
B8
368
WH
VNT valve position
C1
211
YL
SAE J1939 CAN HI
C2
C3
106
GY
EGR valve (5 volt signal)
C4
108
OR/BK
EGR valve high control
C5
109
LG/BK
EGR valve low control
C6
614
GY
MAP sensor (5 volt signal)
C7
616
OR/BK
MAP
C8
615
LG
MAP sensor signal
_____________________________________________________
Electrical System 12-261
C82/ 40 WAY ENGINE CONNECTOR HARNESS LOCATION: ON TOP OF ENGINE
PIN
CKT
COLOR
DESCRIPTION
A1
239
PK
Engine ignition feed
A2
--
--
--
A3
--
--
--
A4
1042
RD
Ignition 1 voltage
A5
1042
RD
Ignition 1 voltage
A6
Female
BR
Not used
A7
623
YL
Engine coolant temperature signal
A8
624
GY
Coolant temperature sensor
B1
631
LG/BK
Fuel injector 2 request
B2
636
RD/BK
Injector 7 request
B3
1254
RD
CAM sensor (5 volt signal)
B4
1253
BR/WH
Cam sensor signal ref 4X
B5
156
PK/BK
Cam sensor ground
B6
--
--
--
B7
--
--
--
B8
1258
YL/BK
Crank sensor
B9
1256
DB/WH
Crank sensor signal
B10
1257
LG
Crank shaft sensor signal
B11
635
YL/BK
Fuel injector 6 request
B12
632
PK/BK
Injector 3 request
C1
630
BK
Fuel injector 1 request
C2
634
BK/WH
Injector 5 request
C3
508
TN
Fuel rail pressure sensor (5 volt signal)
C4
507
OR/BK
Fuel rail pressure signal
C5
509
YL
Fuel pressure regulator sensor signal
C6
--
--
--
C7
--
--
--
C8
660
LB
Engine speed signal to FICM
C9
511
YL
Fuel pressure regulator solenoid control
PIN A1
PIN B1
PIN C1
PIN D1
PIN B12
PIN C12
PIN D8
CAV A8
CAV B12
CAV C12
CAV D8
CAV A1
CAV B1
CAV C1
CAV D1
PIN A8
MALE
FEMALE
12-262
Electrical System
______________________________________________________
C10
510
PP/WH
Fuel pressure regulator solenoid control
C11
637
DB/BK
Fuel injector 8 request
C12
633
LB/BK
Injector 4 request
D1
324
YL
Fuel temperature sensor signal
D2
1252
BR
Fuel temperature sensor
D3
--
--
--
D4
--
--
--
D5
--
--
--
D6
619
TN/WH
Oil pressure sensor signal
D7
618
BK
Engine oil pressure
D8
617
GY
Engine oil pressure (5 volt signal)
PIN
CKT
COLOR
DESCRIPTION
_____________________________________________________
Electrical System 12-263
C83/ 40 WAY TRANSMISSION CONNECTOR HARNESS LOCATION: ON DRIVERS SIDE OF
ENGINE
PIN
CKT
COLOR
DESCRIPTION
A1
769
DB
Fluid pressure switch signal C
A2
770
PK
Fluid pressure switch signal D
A3
771
WH
Fluid pressure switch signal E
A4
782
TN
+12 volt reference
A5
783
DG
TCC PWM solenoid supply voltage
A6
772
DG
Fluid pressure switch reverse signal
A7
591
DB
Transmission range switch signal A
A8
590
YL
Transmission range switch signal B
B1
592
GY
Transmission range switch signal C
B2
593
WH
Transmission range switch signal P
B3
923
TN
TFT sensor signal
B4
493
OR
Transmission Turbin speed switch signal
B5
494
DB
Transmission turbine speed switch low reference
B6
331
WH
Crank request
B7
298
BR
Backup light switch feed
B8
497
YL
Vehicle speed sensor high
B9
498
DG
Vehicle speed sensor low
B10
495
TN
AT ISS High signal
B11
496
OR
AT ISS low signal
B12
594
DG
Ground
C1
272
YL
Trans ID
C2
773
YL
PPC solenoid A valve high control
C3
774
WH
PPC solenoid A valve low control
C4
775
PK
PPC solenoid B valve high control
C5
776
OR
PPC solenoid B valve low control
C6
33
WH
neutral safety switch feed
C7
140
OR
Reverse signal
C8
777
DG
Shift solenoid C valve control
PIN A1
PIN B1
PIN C
PIN D1
PIN A8
PIN B12
PIN C12
PIN D8
CAV A8
CAV B12
CAV C12
CAV D8
CAV A1
CAV B1
CAV C1
CAV D1
FEMALE
MALE
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