Switches; Ignition Key Switch; Testing - Mercury 305 CID Service Manual

Turn magnet clockwise until fuel capsule indica-
6.
tor reads FULL. Ohmmeter should read 30 ohms
(+ 5 ohms). Fuel capsule is defective if not within
specifications.
a
a - Capsule Reading Full

Switches

Ignition Key Switch

TESTING

!
Disconnect battery cables from battery before
testing ignition key switch with wires still con-
nected to switch.
Disconnect battery cables, if testing ignition key
1.
switch with wires connected to switch.
Before testing key switch, check all fuses and/or
2.
circuit breakers in electrical circuit which could
prevent operation of starter.
Index
90-823225--1 1096
CAUTION
With key switch in OFF position, there should be
3.
no continuity between switch terminals.
With key switch in RUN position, continuity will
4.
exist between switch terminals B to I. There
should no continuity between terminal S and any
other terminals.
With key switch in START, continuity will exist be-
5.
tween terminals B to I and B to S.
Terminals are to make contact at angles shown
6.
and to stay in contact condition as switch is ro-
tated toward START.
If ignition key switch tests bad, unsolder wire con-
7.
nections and remove switch. Test switch again,
as in Steps 2-5, preceding. If switch tests good,
wiring in harness is bad, There should be no con-
tinuity between any harness wires with key
switch removed.
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a
a - Key
b - Off
c - Continuity, B to I Terminals
d - Run
e - Continuity B to S Terminals
f - Start
f
e
d
c
b
S
Back View
Key View
INSTRUMENTATION - 4D-9
B
I
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