MerCruiser 305 CID (5.0L) Service Manual page 379

MAINTENANCE
Fuel and Ignition System Harness
MEFI 1 MCM 5.0L EFI and 5.7L EFI Alpha Engines
1 - Fuel Pump
2 - Throttle Body
3 - Distributor
4 - Coil
5 - Electronic Spark Control (KS) Module
6 - Data Link Connector (DLC)
7 - Manifold Absolute Pressure (MAP) Sensor
8 - Knock Sensor
9 - Idle Air Control (IAC)
10 - Throttle Position (TP) Sensor
11 - Engine Coolant Temperature (ECT) Sensor
4
18
19
Index
Page 4E-14
3
8
10
11
12 - Electronic Control Module (ECM)
13 - Fuel Pump Relay
14 - Ignition/System Relay
15 - Fuse (15 Amp) Fuel Pump
16 - Fuse (15 Amp) ECM/DLC/Battery
17 - Fuse (10 Amp) ECM/Injector/Ignition/Knock
Module
18 - Harness Connector To Starting/Charging Har-
ness
19 - Positive (+) Power Wire To Engine Circuit
Breaker
12
9
2
7
5
14
1
SERVICE MANUAL NUMBER
BLK = BLACK
BLU = BLUE
BRN = BROWN
GRY = GRAY
GRN = GREEN
ORN = ORANGE
PNK = PINK
PUR = PURPLE
RED = RED
TAN = TAN
WHT = WHITE
YEL = YELLOW
LIT = LIGHT
DRK = DARK
6
16
17
15
13
90-861327--1 OCTOBER 1999
75001