2002 JEEP GRAND CHEROKEE dtc codes

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Page 1698 of 2199

JEEP GRAND CHEROKEE 2002 WJ / 2.G Workshop Manual TRANSMISSION IDENTIFICATION
Transmission identification numbers are stamped
on the left side of the case just above the oil pan
sealing surface (Fig. 1). Refer to this information
when ordering replac

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JEEP GRAND CHEROKEE 2002 WJ / 2.G Workshop Manual (8) Install the transmission in the vehicle.
(9) Fill the transmission with the recommended
fluid.
TRANSMISSION CONTROL
RELAY
DESCRIPTION
The relay is supplied fused B+ voltage, energized
by the TCM,

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JEEP GRAND CHEROKEE 2002 WJ / 2.G Workshop Manual EMISSIONS CONTROL
TABLE OF CONTENTS
page page
EMISSIONS CONTROL
DESCRIPTION
DESCRIPTION - EMISSION CONTROL
SYSTEM.............................1
DESCRIPTION - STATE DISPLAY TEST
MODE...................

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JEEP GRAND CHEROKEE 2002 WJ / 2.G Workshop Manual DESCRIPTION - STATE DISPLAY TEST MODE
The switch inputs to the Powertrain Control Mod-
ule (PCM) have two recognized states; HIGH and
LOW. For this reason, the PCM cannot recognize the
difference betw

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JEEP GRAND CHEROKEE 2002 WJ / 2.G Workshop Manual DESCRIPTION - TASK MANAGER
The PCM is responsible for efficiently coordinating
the operation of all the emissions-related compo-
nents. The PCM is also responsible for determining if
the diagnostic sy

Page 2176 of 2199

JEEP GRAND CHEROKEE 2002 WJ / 2.G Workshop Manual OPERATION - TASK MANAGER
The Task Manager determines which tests happen
when and which functions occur when. Many of the
diagnostic steps required by OBD II must be per-
formed under specific operatin
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