4.6L V8 Non-DTS Wiring Diagram
1 - Propulsion control module (PCM) connector A
2 - Crankshaft position sensor (CPS)
3 - Power steering
4 - O2 sensor
5 - Fuel injector 6
6 - Fuel injector 8
7 - Fuel injector 4
8 - Fuel injector 3
9 - Fuel injector 2
10 - Fuel injector 1
11 - Fuel injector 7
12 - Fuel injector 5
13 - Fuel pump
14 - Fuel pump relay
15 - CAN P and CAN H terminator (SmartCraft
connector)
16 - Clean power harness
17 - 14‑pin data harness
18 - 2‑pin CAN X terminator
19 - Start relay
20 - Main power relay (MPR)
21 - Starter solenoid
22 - Hot stud (+)
23 - Alternator
24 - Electronic throttle control (ETC)
25 - Engine fuses
26 - Oil level sensor
27 - Oil temperature sensor
28 - Trim sensor
29 - Pitot pressure
30 - Oil pressure sensor
31 - Boat harness
32 - Engine block pressure sensor
33 - Manifold absolute pressure (MAP) sensor
34 - Camshaft position sensor
35 - Ignition coil harness
36 - Exhaust gas temperature (EGT) sensor
37 - Moving propeller (MP) alert
38 - Depth transducer connector
39 - Water‑in‑fuel sensor
40 - Intake air temperature (IAT) sensor
41 - Shift actuator
42 - Trim harness
43 - Chassis ground (–)
44 - Advanced sound control actuator—used on AMS
models only
45 - Cowl trim switch
46 - Engine coolant temperature (ECT) sensor
47 - PCM ground (–)
48 - Shift demand sensor
49 - Throttle demand sensor
50 - PCM connector C
51 - PCM connector B
Engine Harness Diagrams
90-8M0146617 eng JULY 2018 © 2018 Mercury Marine Page 8B-5
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