John Deere 318 - Manual (Page 349)

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SYSTEM SHORT
CIRCUIT TESTS FOR
2-AMP OR 3-AMP
FUSE
M55140 -UN-13APR95
M77926 -UN-12APR95
NOTE: For machines:
316 (S.N. —475000)
318 (S.N. —475000)
420 (S.N. —595880),
A—20-Amp Fuse
B—2-Amp Fuse
NOTE: For machines:
316 (S.N. 475001— )
318 (S.N. 475001— )
420 (S.N. 595881— ),
C—20-Amp Fuse
D—3-Amp Fuse
THE 2 OR 3-AMP
FUSE PROVIDES
CURRENT TO:
—Time Delay Control
(Seat Switch) Circuit
—Battery Discharge
Control Circuit
• If the 2 or 3-amp fuse blows each
time the key switch is turned to the
RUN position, a short is probably in
the 2 or 3-amp fuse power circuit or
inside the TDC module. Check red
wire running between fuse and TDC
8-pin connector and pink wire
running between TDC 8-pin
connector and seat switch. • If sitting on the seat blows this
fuse when the key switch is at the
RUN position, there is probably a
short in the pink wire running
between the seat switch and TDC
2-pin connector or a short may be
inside the TDC module. MOST LIKELY AREAS TO CHECK FOR
SHORTS:
Wires routed through panels or between frame
and deck.
Wires routed near exhaust manifold or muffler
Wires routed near the drive shaft.
MX,159024030,19-19-16MAY95
Electrical System Component Tests and Adjustments/System Short Circuit Tests
TM1590 (17MAY95)
240-25-9
316, 318 & 420 Lawn and Garden Tractors
020895
240
25
9