Hummer H1 (2002+). Manual — part 272
_____________________________________________________
PCM/Tech 1 Scan Tool 21
®
05745159
FUSE 3A
20 AMP
EXTERIOR
HOT IN RUN
AND ST
ART
TO
ST
ARTER
GLOW PLUG
CONTROLLER
IGN
POWER
RELA
Y
POWER
BA
TTER
Y
FUSIBLE LINK
FUSIBLE LINK
FUSIBLE LINK
F
U
S
IB
L
E
L
IN
K
F
U
S
IB
L
E
L
IN
K
S
F
U
S
IB
L
E
L
IN
K
S
G
L
O
W
P
L
U
G
S
L
H
G
L
O
W
P
L
U
G
S
R
H
F
E
E
D
B
A
C
K
S
IG
N
A
L
G
L
O
W
P
L
U
G
R
E
L
A
Y
C
O
N
T
R
O
L
P
O
W
E
R
T
R
A
IN
C
O
N
T
R
O
L
M
O
D
U
L
E
(P
C
M
)
C
27
-D
7
C
27
-C
6
C
5
-C
1
1
C
5
-B
4
506 LB
466 YL
G
1
#
1
#
3
#
5
#
7
#
2
#
4
#
6
#
8
BC
BK
RELA
Y
CONTROL
GRD
A
C5-A4
GLOW PLUG
ENABLE
9-S12-058
WA
IT
C
9
-J
C
9-A
C
3
-D
1
C
1
-2
7
C
2
8-C
7
30 GY
3
38
D
B
C
3
-N
7
R
H
S
T
A
T
U
S
C
E
N
T
E
R
FUSE 4B
5 AMP
INTERIOR
FUSE BOX
TO
IGNITION
SWITCH
22
PCM/Tech 1 Scan Tool
_____________________________________________________
®
FUSE 2D
20 AMP
INTERIOR
STS
LAMP
MIL
LAMP
FUSE 3A
20 AMP
EXTERIOR
HOT AT
ALL TIMES
HOT IN RUN
AND START
HOT IN RUN
AND START
FUSE 4B
5 AMP
INTERIOR
G2
G4
FUSE 1H
5 AMP
INTERIOR
DLC
POWERTRAIN
CONTROL
MODULE
SERIAL DATA
CLASS II
MIL
CONTROL
STS LAMP
CONTROL
914 PP
16
4
2
59 BK
C28-C8
570 BK
C28-D7
C28-D6
GROUND
GROUND
570 BK
BATT
BATT
IGN
IGN
C28-C13
C28-D13
C28-C12
C28-C11
C28-D11
TO
C29-B3
537 OR
239 PK
C1-10
C10-J
C10-H
C10-C
C3-G5
C3-F3
C1-25
C1-28
C28-C14
658 BR
714 RD
STATUS
CENTER
HOT AT
ALL TIMES
9-S12-064
554 GRY
30
GR
Y
_____________________________________________________
PCM/Tech 1 Scan Tool 23
®
05745159
5 VOLT
REFERNCE
CKP
SENSOR
SIGNAL
SENSOR
GROUND
CRANK
SHAFT
POSITION
SENSOR
(CKP)
A
B
B
A
B
B
A
A
C
C
C5-B12
C5-B5
C5-B9
BOOST/
BARO
PRESSURE
SENSOR
INTAKE AIR
TEMPERATURE
SENSOR (IAT)
ENGINE
COOLANT
TEMP
SENSOR
(ECT)
C5-B10
POWERTRAIN
CONTROL
MODULE
CKP
SENSOR
SIGNAL
SENSOR
GROUND
5 VOLT
REFERENCE
BOOST
SENSOR
SIGNAL
SENSOR
GROUND
ECT
SENSOR
SIGNAL
IAT
SENSOR
SIGNAL
C29-A5
359 BK
C5-C4
C5-C5
C27-C1
C27-D13
C27-C14
C29-B12
349 YL
651 PP
350 LG
394 LB
359 BK
C5-B11
TO
TFT
SENSOR
357 TN
354 YL
9-S12-066
24
PCM/Tech 1 Scan Tool
_____________________________________________________
®
A
E
B
F
D
C
5 VOLT
REFERENCE
OPTICAL/ FUEL
TEMP SENSOR
PUMP CAM
SENSOR
SIGNAL
HIGH
RESOLUTION
SIGNAL
SENSOR
GROUND
M
D
A
B
C
C5
C3
B8
C1
C12
C2
375 GY
442 BR
703 OR
156 PK
225 YL
C27-D14
C29-A4
C29-A2
C27-D9
C27-C8
FUEL TEMP
SIGNAL
SENSOR
GROUND
HIGH
RES
SIGNAL
CAM
SENSOR
SIGNAL
5 VOLT
REFERENCE
INJECTION TIMING
STEPPEN MOTOR (ITS)
A3
A2
A6
A7
709 RD
708 TN
710 OR
71
1 YL
C29
A8
A9
A10
A7
ITS
HI
ITS
LO
ITS
LO
ITS
HI
POWERTRAIN
CONTROL
MODULE
9-S12-070
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