3.4L V6 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 4
7 - Fuel injector 3
8 - Fuel injector 2
9 - Fuel injector 1
10 - Fuel injector 5
11 - Fuel pump
12 - Fuel pump relay
13 - CAN P and CAN H terminator (SmartCraft
connector)
14 - Clean power harness
15 - 14‑pin data harness
16 - 2‑pin CAN X terminator
17 - Start relay
18 - Main power relay (MPR)
19 - Starter solenoid
20 - Hot stud (+)
21 - Alternator
22 - Electronic throttle control (ETC)
23 - Engine fuses
24 - Oil level sensor
25 - Oil temperature sensor
26 - Trim sender
27 - Pitot pressure sensor
28 - Oil pressure sensor
29 - Boat harness
30 - Engine block pressure sensor
31 - Manifold absolute pressure (MAP) sensor
32 - Camshaft position sensor
33 - Ignition coil harness
34 - Exhaust gas temperature (EGT) sensor
35 - Moving propeller (MP) alert
36 - Depth transducer connector
37 - Water‑in‑fuel sensor
38 - Intake air temperature (IAT) sensor
39 - Shift actuator
40 - Trim harness
41 - Chassis ground (–)
42 - Cowl trim switch
43 - Engine coolant temperature (ECT) sensor
44 - PCM ground (–)
45 - Shift demand sensor
46 - Throttle demand sensor
47 - PCM connector C
48 - PCM connector B
Engine Harness Diagrams
90-8M0146617 eng JULY 2018 © 2018 Mercury Marine Page 8B-7
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