14
• 8
FUEL
SYSTEM
IENERA&.
DSAGKOSIS"-DIE§EL
INDEX
page page
.
. 11
.
. 11
On Board Diagnostics 11
Air
Intake
Heater
11
Throttle
Position Sensor Test 10
KSB
Solenoid 11 Visual Inspection 8
VISUAL
INSPECTION
A
visual
inspection for loose, disconnected, or incor-
rectly
routed wires and
hoses
should be made before
attempting
to diagnose or service the
fuel
injection
system. A
visual
check
will
help
find
these
condi-
tions.
It also
saves
unnecessary test and diagnostic
time.
A thorough
visual
inspection of the
fuel
injec-
tion
system includes the
following
checks:
(I)
Ensure that the battery connections are
tight
and
not corroded
(Fig.
1).
Fig.
1
Battery Connections
(2)
Ensure that the
60-way
connector is
fully
en-
gaged
with
the engine
controller.
Verify
that the con-
nector mounting screw is
tight
(Fig.
2).
(3)
Ensure that the electrical connections at the air
intake
heater relays (Fig. 3) are
tight
and not cor-
roded.
•
(4)
Inspect the starter motor and starter solenoid
connections for tightness and corrosion
(Fig.
4).
(5)
Verify
that the electrical connectors are con-
nected to the charge air temperature
sensor
and air
temperature
switch.
Inspect the connectors for corro-
sion
or damaged wires
(Fig.
5).
(6)
Verify
that the electrical connector is connected
to
the air temperature
switch
(Fig.
5).
ENGINE
60-WAY
J9114-234
Fig,
2
Engine Controller
HEATER
RELAYS
WELL
J9114-67
Fig.
3 Air
Intake Heater Relays
(7)
Verify
that the Water-in-Fuel (W1F)
sensor
electrical
connector is connected to the
sensor
(Fig.
6).
Inspect the connector for corrosion or damaged
wires.
(8)
Place a
drain
pan under the
drain
tube
(Fig.
6).
With
the engine not operating,
hold
the
drain
open
until
all water and contaminants have been removed
and
clean
fuel
exits the
drain.
Dispose of
mixture
in
drain
pan according to applicable regulations.
(9)
Verify
that the electrical connector is connected
to
the
fuel
solenoid on the
injection
pump
(Fig.
7). In-
spect the connector for corrosion or damage.
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