Mercury V6 175 Diagnostic Manual page 277

1 - Fuel injector 1
2 - Fuel injector 2
3 - Fuel injector 3
4 - Fuel injector 4
5 - Fuel injector 5
6 - Fuel injector 6
7 - Fuel injector 7
8 - Fuel injector 8
Connector
A
B
65694
A
86
87
Hot stud ring terminal
MPR
MPR
90-8M0146617 eng JULY 2018
Pin Wire Color
A Red/orange
Pink/brown
Pink/red
Pink/orange
Pink/yellow
B
Pink/blue
Pink/purple
Pink/white
Pink/light green
A Pink
B
B Black
53172
30 Red/pink
30
85 Yellow/black
86 Red/blue
85
87 Pink
59637
– Red
86 Yellow/purple
87 Red/white
9 - PCM connector A
10 - Fuel supply module
11 - Fuel pump relay
12 - Main power relay
13 - Hot stud
14 - Fuse holder ‑ three 20‑amp fuses shown
15 - Chassis ground
Function
Fused (20 A) 12 V power (+)
Fuel injector 1
Fuel injector 2
Fuel injector 3
Fuel injector 4
Fuel injector 5
Fuel injector 6
Fuel injector 7
Fuel injector 8
Fuel pump 12 V power (+)
Chassis ground (–)
Fused (20 A) 12 V power (+)
Fuel pump relay (FPR) control
Fused (20 A) 12 V power (+)
Fuel pump 12 V power (+)
12 V battery power (+)
Main power relay (MPR) control signal
Switched 12 V power (+)
© 2018 Mercury Marine
Troubleshooting and Diagnostics
Page 7B-9
PCM
–
AF3
AD1
AF4
AF1
AE1
AF2
AC1
AB1
–
–
–
AB4
–
–
–
AA2
–