Hummer H1 (2002+). Manual — part 236
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Electrical System 12-165
®
05745159
D1
338
DB
Glow plug wait lamp activation
D2
2
LG
Right turn indicator lamp activation
D3
961
PP
TT4 indicator lamp activation
E1
42
BR
Brake indicator lamp activation
E2
603
RD
ABS indicator lamp activation
E3
793
YL
Low washer fluid activation
E4
943
TN
Rear Wiper feed (not used 99)
F1
12
OR
High Beam indicator lamp activation
F2
3
LB
Left turn indicator lamp activation
F3
658
BR
Check engine lamp activation
F4
327
YL
Drain Filter lamp activation
G1
517
PK
Power mirror switch battery feed
G2
210
DG
Transfer case lock lamp activation
G3
794
RD
Low coolant lamp activation
G4
428
PK
Low tire air lamp activation
G5
714
DB
Check throttle lamp activation
H6
14
LB
Headlamp switch feed
H7
65
YL
Ignition feed to intermittent wiper switch
H8
61
RD
High speed windshield wiper signal
H9
17
PP
+ from dimmer module
J6
63
DG
Low speed windshield wiper signal
J7
27
OR
Intermittent wiper signal
J8
948
DG/YL
Left hand power mirror up/down signal
J9
947
DB/YL
Left hand power mirror left/right signal
K6
942
OR/BK
Left hand power mirror common +/–
K7
19
YL
Power supply to dimmer module
K8
944
OR
Right hand power mirror common +/–
K9
644
YL
Tachometer signal
L6
476
GY
Clock battery feed
L7
31
TN
Oil pressure signal to gauge
L8
952
DB
Right hand power mirror left/right signal
M6
789
BR
Fuel selector valve control
M7
786
RD
Fuel selector valve control
PIN
CKT
COLOR
DESCRIPTION
12-166
Electrical System
______________________________________________________
®
M8
787
GY
Fuel selector switch feed from fuel pump relay
M9
953
DG
Right hand power mirror up/down signal
N6
59
BK
Ground
N7
30
GY
Ignition feed to gauges
N8
941
TN
Windshield wiper washer pump activation
N9
945
BR
Intermittent wiper relay activation
P6
55
OR
Rear cargo lamp activation
P7
29
PK
Fuel gauge signal
P8
39
DG
Engine temperature gauge signal
P9
353
YL
Speedometer signal
P10
59
BK
Ground
PIN
CKT
COLOR
DESCRIPTION
_____________________________________________________
Electrical System 12-167
®
05745159
12 WAY AMG ENGINE
LOCATION: LEFT INTAKE MANIFOLD
9-S12-072
1
2
3
4
5
7
8
6
9
10
11
12
C4 MALE
9-S12-077
3
2
1
6
8
12
11
10
9
7
5
4
C4 FEMALE
PIN
CKT
COLOR
DESCRIPTION
1
34
LB
Starter solenoid activation
2
198
TN
A/C request from control head
3
291
PK
Ignition feed to alternator and low coolant sensor
4
5
439
YL
A/C request to PCM
6
7
8
348
BR
A/C compressor clutch activate
9
10
11
794
RD
Low coolant lamp activation
12
4-1-00
Section 12 Electrical System
12-168
Electrical System
______________________________________________________
®
40 WAY GM ENGINE
LOCATION: LEFT INTAKE MANIFOLD
9-S12-020
9-S12-019
PIN A1
PIN B1
PIN C1
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
C5 MALE
C5 FEMALE
PIN
CKT
COLOR
DESCRIPTION
A1
39
DG
Engine temperature signal to gauge
A2
708
TN
Injection timing stepper motor LO
A3
709
RD
Injection timing stepper motor HI
A4
239
PK
Engine ignition feed
A5
291
PK
Engine ignition feed
A6
710
OR
Injection timing stepper motor LO
A7
711
YL
Injection timing stepper motor HI
A8
713
RD
Closure signal to solenoid driver
B1
712
LG
Fuel inject signal to solenoid driver
B2
491
BK
Closure ground to solenoid driver
B3
701
DB
Engine shutoff solenoid enable
B4
466
YL
Glow plug controller enable
B5
651
PP
Crankshaft position sensor ground
B6
57
BK
Ground
B7
B8
442
BR
CAM signal
B9
349
YL
Crankshaft position signal
B10
394
LG
Boost Pressure Signal
B11
359
BK
Sensor ground
B12
350
GY
Sensor 5 volt reference
C1
703
OR
High resolution signal
C2
225
YL
Fuel temperature signal
C3
375
GY
Optical Sensor 5 volt reference
4-1-00
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