Ground Circuits; Fuse - Evinrude E-Tec 40 HP Service Manual

ELECTRICAL AND IGNITION

GROUND CIRCUITS

GROUND CIRCUITS
All grou nd circuit s are essential to reliable out-
board performance. Make sure all ground connec-
tions are clean and tight. Refer to wiring diagrams
for specific wiring details.
EMM Ground Tests
Disconnect the battery cables at the battery.
Use an ohmmeter to check co ntinuity of grou nd
circuits. Calibrate the ohmmeter on the high ohms
scale. Resistance readings fo r all gro und circu its
should be 0 W.
System/power supp ly grou nds: Check continu-
•
ity between terminal pins 5, 7, and 8 of EMM J2
connector and the main harness ground.
Injector circu it g rounds: Check
•
between te rminal p ins 14, 20, a nd 2 1 of the
EMM J1 -B conne ctor a nd the main h arness
ground.
Sensor circuit g
•
between terminal pin s 26 and 27 of the EMM
J1-A co nnector and the
ground connections. Refer to wiring diagrams.
1
2
1. Main harness ground
2. Ground stud (battery)
Additional Ground Tests
Check connections and continuity at the following
locations:
Starter solenoid terminal B and main harness
•
ground.
Trim and Tilt module ground a t main h arness
•
ground.
94
continuity
rounds: Check continuity
appropriate sensor

FUSE

The engine h arness 12 V (B+) circu it is pro tected
by one automotive style 10 amp minifuse.
The fuse is located on the port side of the p ower-
head, in the flywheel cover.
2
1. Fuse
2. Spare fuse
IMPORTANT:
the result of faulty conne ctions or a ccessories.
The 12 V a ccessory circuit (purple wire from ter-
minal "A" of key switch) is of ten used to power
accessories.
002292
Repeat failures of fuse could be
1
005004