John Deere 318 - Manual (Page 317)

1b
20-Amp Power
Circuit Test at TDC
Module
Remove battery base to
access TDC 8-pin
connector.
Set battery on air
cleaner cover, then
reroute battery negative
(—) cable so it can be
connected to battery.
M37160 -UN-25JAN90
Turn key switch to RUN
position.
Check for voltage at
terminal with pink and
purple wires (A) at TDC
8-pin connector.
VOLTAGE: GO TO
1c
NO VOLTAGE: Pink
wire between 20-amp
fuse and TDC 8-pin
connector is open.
Repair or replace as
necessary, then GO TO
;
, Group 05.
1c
20-Amp Power
Circuit Test at PTO
Switch
Turn key switch to RUN
position.
M55146 -UN-11DEC89
Check for voltage at
switch terminal with
yellow and purple wires
(A). VOLTAGE: GO TO
1d
NO VOLTAGE: Purple
wire running between
TDC 8-pin connector
and PTO switch is
open. Repair or replace
wire as necessary, then
GO TO
;
, Group 05.
1d
20-Amp Power
Circuit Test at
Light Switch
For machines,
316 (S.N. —362983)
318 (S.N. —364137)
420 (S.N. —360009)
remove left pedestal
side panel.
M77928 -UN-17JAN95
Turn key switch to RUN
position.
Check for voltage at
terminal (A) at light
switch.
VOLTAGE: GO TO
1k
NO VOLTAGE: Yellow
wire between PTO
switch and light switch
is open. Repair or
replace as necessary,
then GO TO
;
, Group
05.
MX,159024025,12-19-16MAY95
MX,159024025,13-19-16MAY95
MX,159024025,14-19-16MAY95
Electrical System Diagnosis/Dash Lamp Circuit Tests
TM1590 (17MAY95)
240-20-5
316, 318 & 420 Lawn and Garden Tractors
020895
240
20
5