2002 DODGE RAM Service Repair Manual

Page 1361 of 2255

DODGE RAM 2002  Service Repair Manual (8) Crank the engine for 30 seconds at a time to
allow air trapped in the injection pump to vent out
the drain manifold.
WARNING: THE FUEL INJECTION PUMP SUPPLIES
EXTREMELY HIGH FUEL PRESSURE TO EACH

Page 1362 of 2255

DODGE RAM 2002  Service Repair Manual SPECIAL TOOLS
DIESEL FUEL SYSTEMFUEL FILTER / WATER
SEPARATOR
DESCRIPTION
The fuel filter/water separator assembly is located
on left side of engine above starter motor (Fig. 13).
The assembly also in

Page 1363 of 2255

DODGE RAM 2002  Service Repair Manual REMOVAL
Refer to maintenance schedules in this manual for
recommended fuel filter replacement intervals.
Draining water from fuel filter/water separa-
tor housing:
The housing drain valve (Fig. 14) se

Page 1364 of 2255

DODGE RAM 2002  Service Repair Manual (c) Check condition of o-ring.
(d) Inspect the 2 WIF sensor probes. Carefully
clean contaminants from sensor probes with a cloth
if necessary. Replace sensor if probes are covered
with contaminants an

Page 1365 of 2255

DODGE RAM 2002  Service Repair Manual (d) Tighten sensor to 2±3 N´m (15±20 in. lbs.)
torque.
(e) Connect electrical connector to WIF sensor.
(f) Install fuel filter. Refer to previous steps.
(4)Fuel Heater Element:
(a) Do not install f

Page 1366 of 2255

DODGE RAM 2002  Service Repair Manual Voltage to operate the fuel heater element is sup-
plied from the ignition switch, through the fuel
heater relay (also refer to Fuel Heater Relay), to the
fuel temperature sensor and on to the fuel he

Page 1367 of 2255

DODGE RAM 2002  Service Repair Manual DIAGNOSIS AND TESTING - FUEL HEATER
RELAY
The fuel heater relay is located in the Power Dis-
tribution Center (PDC). Refer to label under PDC
cover for relay location.
To test the fuel heater, refer t

Page 1368 of 2255

DODGE RAM 2002  Service Repair Manual (7) Attach the other jumper wire (12V +) to termi-
nal number 86. This will activate the relay. Continu-
ity should now be present between terminals number
87 and 30. Continuity should not be present