2003 JEEP GRAND CHEROKEE oil system

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Page 2153 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual VISCOUS HEATER
DESCRIPTION
DESCRIPTION
The diesel engine has an engine mounted mechan-
ical device called a Viscous Heater that is used to
heat the coolant coming from the engine to the
heater core. T

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JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual (14) Remove the snap ring from the hub and
remove the clutch field coil (Fig. 22). Slide the clutch
field coil off of the hub.
INSTALLATION
INSTALLATION
(1) Install Viscous Heater to engine mounting
b

Page 2162 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual (M)Malfunction Indicator Lamp (MIL) illuminated during engine operation if this DTC was recorded
(depending if required by CARB and/or EPA). MIL is displayed as an engine icon on instrument panel.
(G)

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JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual (M)Malfunction Indicator Lamp (MIL) illuminated during engine operation if this DTC was recorded
(depending if required by CARB and/or EPA). MIL is displayed as an engine icon on instrument panel.
(G)

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JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual an associated limp in will take two trips to illumi-
nate the MIL.
Refer to the Diagnostic Trouble Codes Description
Charts in this section and the appropriate Power-
train Diagnostic Procedure Manual

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JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual ²a PCV valve mounted to the oil filler housing
(Fig. 3). The PCV valve is sealed to the oil filler
housing with an o-ring.
²the air cleaner housing
²two interconnected breathers threaded into the
r

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JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual set a temporary fault without turning on the MIL
and continue the leak portion of the test. However,
the PCM will assume that the system is already
pressurized and skip the rapid pump cycles.
Always d

Page 2192 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual Check the vapor/vacuum lines at the LDP, LDP
filter and EVAP canister purge solenoid for
damage or leaks. If a leak is present, a Diagnos-
tic Trouble Code (DTC) may be set.
(2) Connect electrical con