7.4L
/ 7.4LX / 454 / 502 MULTI-PORT MAGNUM ENGINE DIAGRAM MODELS WITH VST
NOTE 1
1
3
7
8
4
2
9
10
11
20
13
6
18
12
5
17
21
19
15
16
14
22
71692
NOTE 1: As a mid year (96-1/2) model change, the Throttle Body and Multi Port Injection models have the lan-
yard stop connector removed from the wiring harness. The dual engine capability is relocated by routing the YEL
wire to the Data Link Connector (DLC).
NOTE 2: All BLACK wires with a ground symbol are interconnected within the fuel injection system harness.
1
2
3
4
5
6
7
8
9
- Vapor Separator Tank
- Throttle Body
- Distributor
12- Engine Coolant Temperature (ECT) Sensor
13- Electronic Control Module (ECM) Sensor
14- Fuel Pump Relay
15- Ignition Relay
16- Fuel Pump Relay (15 Amp)
17- Injector Fuse 15 Amp.) ECM, DLC, Battery
18- ECM Fuse (10 Amp.) ECM, Ignition, Injectors, Knock Sen-
sor Module
- Coil
- Knock Sensor (KS) Module
- Data Link Connector (DLC)
- Manifold Absolute Pressure (MAP) Sensor
- Intake Air Temperature (IAT) Sensor
- Knock Sensor (KS)
19- Harness Connector To Starting / Charging Harness
20- Harness Connector To Lanyard Stop Switch (Optional)
21- Harness Connector For Dual Engine Data Link Cable
10-
11-
Idle Air Control (IAC)
Throttle Positive Sensor (TP)
22-
Positive (+) Power Wire To Engine Circuit Breaker
Index
4F-8 - WIRING DIAGRAMS
90-823224--2 796
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 454 CID, Mercury MerCruiser 502 CID |
| Model Year | 1993, 1994, 1995, 1996, 1997 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
(4 votes, average: 4.5 out of 5)
Marine readers have rated 1993 1997 Mercury-MerCruiser GM V8 454 CID 7.4L and 502 CID 8.2L Marine Engines Service Manual Number 16 4.5 out of 5.0 based on 4 product reviews. Hugely helpful service manual! Perfect. Thank you!
Manuals are all Important for Technician
This book is invaluable if you do your own repairs. Great book.
Could not find a copy until a search brought me here.
Excellent print.
Thank you