Hummer H1 (2006+). Manual - part 394
12-252
Electrical System
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C76/ 72 WAY ECM J2 (BLACK) LOCATION: DRIVERSIDE COWL TOP UNDER ECM
PIN
CKT
COLOR
DESCRIPTION
1
2
507
OR/BK
Fuel rail pressure signal
3
--
--
--
4
--
--
--
5
232
BR
CAN shield
6
--
--
--
7
784
DB
T-case range switch input to the ECM (-)
8
107
BK
EGR stepper motor
9
--
--
--
10
--
--
--
11
--
--
--
12
--
--
--
13
--
--
--
14
624
GY
Coolant temperature sensor
15
--
--
--
16
--
--
--
17
--
--
--
18
--
--
--
19
718
DB
APP sensor 1 signal
20
--
--
--
21
661
GN
Transmission control module MIL request
22
--
--
--
23
615
LG
MAP sensor signal
24
724
DG
APP sensor 3 signal
25
619
TN/WH
Oil pressure sensor signal