TM
5-5420-226-20-1
Symptom-42
DETAILED
TROUBLESHOOTING
PROCEDURE
INDICATOR
- LAMP
(Continued)
m
)
Check
engine
low oil pressure
switch
for short to
ground.
First
Technician
(Rear
Grille
Doors)
l Reconnect
transmission
harness
connector
to
transmission
high oil temperature
switch.
First
Technician
(Rear
of Crew
Compartment)
l Disconnect
engine
electrical
harness
connector
(CKT
509L)
from engine
low oil pressure
switch.
l Connect red probe of meter to center contact of engine
low oil pressure
switch
and black
probe
to ground.
Second
Technician
(Operator’s
Station)
l Start engine.
First
Technician
(Rear
of Crew
Compartment)
l
l Check if meter indicates
continuity.
Second
Technician
(Operator’s
Station)
l Stop engine.
!
Did meter
indicate
continuity,
thereby
indicating
a
short?
E
%--IF
TO VEHICLE
II
GROUND
~
/
CKT 509L
A
a
@
Tk*
ENGINE
.
*
J
LOW OIL
j
J
‘
PRESSURE
““,&
SWITCH
.
e
.
‘“
!
.
l Replace
engine
low oil
pressure
switch
(page
10-242).
l Install transmission
shroud
(page
9-6).
9
TA107192
4-503
