John Deere 318 - Manual (Page 319)

1h
Main Power
Circuit
Test at Starter
Solenoid—For
Early Models:
316 (SN —362983)
318 (SN —364137)
420 (SN —360009)
NOTE: On Later
Models; Starter
solenoid is on starter.
M37158 -UN-25JAN90
Check for voltage at
battery cable terminal
(B) at starter solenoid. VOLTAGE AT
SOLENOID: Replace
wire to breaker.
NO VOLTAGE: Replace
battery cable.
Make repairs as
necessary, then GO TO
;
, Group 05.
1i
Engine Oil
Pressure Lamp
Test
Check 20-amp fuse.
If lamp stays on at all
times, GO TO
1l
Open hood.
Disconnect 3-pin
connector at left front
side of engine.
M55081 -UN-17JAN95
Turn key switch to RUN
position.
Connect jumper wire
from tan wire of
connector (A) to
ground.
LOOK: Lamp should
come ON.
LAMP ON: Wire
between 3-pin
connector and oil
pressure switch is open
or switch is faulty.
Repair or replace as
necessary, then GO TO
;
, Group 05.
LAMP NOT ON: GO
TO
1j
1j
Engine Oil
Pressure Lamp
Ground Circuit Test
Key switch OFF.
Disconnect 3-pin engine
connector.
M37300 -UN-25JAN90
M55082 -UN-09DEC89
Remove and check
bulb.
Check for continuity
between tan wire (A) of
bulb socket and tan
wire (B) of engine
harness connector.
CONTINUITY: Connect
engine harness, then
GO TO
1k
NO CONTINUITY:
Repair or replace tan
wire from engine
harness to bulb socket
then GO TO
; , Group
05.
MX,159024025,18-19-16MAY95
MX,159024025,19-19-16MAY95
MX,159024025,20-19-16MAY95
Electrical System Diagnosis/Dash Lamp Circuit Tests
TM1590 (17MAY95)
240-20-7
316, 318 & 420 Lawn and Garden Tractors
020895
240
20
7