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97
C6
Bypass
NOT USED
Injector D
Injector C
Injector B
Injector A
O2 Sensor signal
Analog GND
NOT USED
ECU GND
NOSenable
NOS1
+5 Volt ref
NOT USED
Analog GND
EST / SPOUT
Analog GND
ECU GND
Battery
Coolant Temp
TPS signal
MAT singnal
Points Out
NOT USED
NOT USED
Coil (-)
D12
White/Green
White/Brown
White/Red
White/Blue
D16
D13
D15
D14
Black
Purple
Black/White
D8
D11
D10
D9
D7
D5
D6
C14
Orange
Black/White
Black/White
Black
D1
D3
D4
D2
C16
C15
Red
Green
Brown
White
C10
C11
C12
C13
Blue
C8
C9
C7
Fuel Pump Relay
MAP
NOT USED
IAC "A" Lo
IAC "A" Hi
IAC "B" Hi
IAC "B" Lo
Cooling Fan Relay
SlewSpark
AC Request
ESC (knock)
Park / Neutral
IPU (+)
IPU (-)
Ref / PIP
SlewFuel
TxD
SERIAL GND
NOT USED
Vehicle Speed
ECU GND
NOT USED
Battery
NOT USED
NOT USED
NOT USED
Vswitch
(switched power)
RxD
ModA
ModB
A1
Brown
B4
B11
Purple/Blue
Purple/Yellow
Purple/Black
Purple/White
C5
C4
C3
B12
C1
C2
Yellow/Black
Green
Dark Blue
Purple
Orange/Red
B8
B10
B9
B6
B7
B5
A9
Orange
Red/Black
Black
Black/White
B2
B3
B1
Red
A11
A12
A10
Yellow
Red/White
Green
A5
A7
A8
A6
A3
A4
A2
Brown
Green/Black
3
Yellow
Black/White
Orange
2
1
Green
4
Serial Com
Connector
A
B
All connectors viewed from end away
from the wires.
Injectors
White/Blue
White/Red
White/Brown
White/Green
Red
E
D
A
B
C
A
B
E
C
D
MAT
HALL
EFFECT
O2
Sensor
C
C
TPS
Yellow/Black
Red/White
Black
Purple
Red
Black
Black/White
B
C
A
A
C
B
A
C
B
B
B
C
A
A
Orange
Green
Black/White
Blue
Black/White
Red/Black
Orange
Black/White
B
A
A
B
B
A
C
A
B
A
C
B
MAP
Red
Relay to provide power for:
Fuel Pump
O2 heater
Injectors
IAC
IPU
Purple/White
Purple/Blue
Purple/Yellow
Purple/Black
Brown
White
Purple
Green
A
A
C
B
D
B
ECT
C
A
B
D
B
C
A
B
C
A
Orange/Red
Light Blue
Black
Red/White
5 (86)
Park/Neu
FUSE
AC Request
Vswitch
Black
Red
Battery
Ground
Green/Black
Green/Black
Green/Black
Red
2 (85)
4 (87)
1 (30)
Fuel Pump
Figure 75 G.M. LT1/LT4 engine—P/N 271R886A