Mercury 15XD User Manual

IGNITION
Page 2A-16 90-826883R2 JUNE 1998
Test 7 Ignition Coils
(
“
+
”
)
w
i
r
e
d
i
s
c
o
n
-
RED
BLACK
(+) Terminal
(--) Terminal
R x 1 W 0
T
e
s
t
7
I
g
n
i
t
i
o
n
C
o
i
l
s
(“+”) wire discon-
nected)
RED
BLACK
Spark Plug Tower
(+) Terminal
R x 100 W 8.5 - 12
NOTE: Copperisanexcellentconductor,howeverresistance may notably varybetween
low and high temperature. Therefore, reasonable differences can be accepted between
resistance readings and specifications.
The above readings are for a cold (room temperature) engine. Resistance will increase
if the engine is warm.
Ignition Troubleshooting
Mechanical Spark Advance
TOOL : MULTIMETER/DVA TESTER 91-99750
Tested Part
Multimeter
Wires
Connected To
Resistance
(ohms)
Scale
Stator (BLACK/
YELLOW and
BLACK/WHITE
wires discon-
nected from switch
boxes)
R x 1 120 - 180
32 - 38
31 - 37
R x 100
R x 100
Trigger (BROWN/
YELLOW and
BROWN wires dis-
connected from
switch boxes)
R x 100 6.5 - 8.5
RED
BLACK
BLACK/WHITE
GROUND
RED
BLACK
BLACK/YELLOW
GROUND
BLACK/YELLOW
BLACK/WHITE
BROWN/YELLOW
BROWN
Tested Part
Multimeter
Connected To
Scale
Ignition Coils
(all wires dis-
connected)
R x 1
R x 1000
0.02 - 0.04
8 - 11
Resistance
(ohms)
RED
BLACK
RED
BLACK
+ Terminal
-- Terminal
Spark Plug Tower
-- Terminal
RED
BLACK
RED
BLACK
Tested Part
Multimeter
Wires
Connected To
Reading At
300 - 1000 RPM
Selector
Position
Switch Box
Primary Coil
400 VDC 125 -260
Reading At
1000 - 4000 RPM
Stop Circuit
400 VDC
200 - 360
RED
BLACK
-- Terminal
+ Terminal
RED
BLACK
BLACK/YELLOW
GROUND
Switch Box
Stator Low
Speed
150 - 300
250 - 360
Stator High
Speed
RED
BLACK
GROUND
BLACK/WHITE
400 VDC 10 - 75 50 - 300

Mercury 15XD Specifications

General

Brand	Mercury
Model	15XD
Category	Outboard Motor
Language	English