Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Jeep Cherokee XJ 1997.1999-2001 Approved 2000 XJ Jeep Cherokee exj_8t

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XJ                                                                                       POWER MIRROR SYSTEMS                   8T - 1

                                     POWER MIRROR SYSTEMS
                                                  TABLE OF CONTENTS

                                                             page                                                                 page

GENERAL INFORMATION                                                   DIAGNOSIS AND TESTING
 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . 1    POWER MIRROR SYSTEM. . . . . . . . . . . . . . . . . . 2
 POWER MIRROR SYSTEM. . . . . . . . . . . . . . . . . . 1             REMOVAL AND INSTALLATION
DESCRIPTION AND OPERATION                                              POWER MIRROR SWITCH . . . . . . . . . . . . . . . . . . 3
 POWER MIRROR . . . . . . . . . . . . . . . . . . . . . . . . . 1      DOOR MODULE . . . . . . . . . . . . . . . . . . . . . . . . . . 3
 POWER MIRROR SWITCH . . . . . . . . . . . . . . . . . . 1             POWER MIRROR . . . . . . . . . . . . . . . . . . . . . . . . . 4
 DOOR MODULE . . . . . . . . . . . . . . . . . . . . . . . . . . 2

GENERAL INFORMATION                                                     Following are general descriptions of the major
                                                                      components in the power mirror system. Refer to the
INTRODUCTION                                                          owner's manual in the vehicle glove box for more
  Power operated or power operated and heated out-                    information on the features, use and operation of the
side rear view mirrors are available factory-installed                power mirror system.
options on this model. Refer to 8W-62 - Power Mir-
rors in Group 8W - Wiring Diagrams for complete cir-                  DESCRIPTION AND OPERATION
cuit descriptions and diagrams.

NOTE: This group covers both Left-Hand Drive                          POWER MIRROR
(LHD) and Right-Hand Drive (RHD) versions of this                        Each power mirror head contains two electric
model. Whenever required and feasible, the RHD                        motors, two drive mechanisms, and the mirror glass.
versions of affected vehicle components have been                     One motor and drive controls mirror up-and-down
constructed as mirror-image of the LHD versions.                      movement, and the other controls right-and-left
While most of the illustrations used in this group                    movement.
represent only the LHD version, the diagnostic and                       The power mirrors in vehicles equipped with the
service procedures outlined can generally be                          available heated mirror option also include an elec-
applied to either version. Exceptions to this rule                    tric heating grid located behind the mirror glass.
have been clearly identified as LHD or RHD, if a                      This heating grid is energized by the rear window
special illustration or procedure is required.                        defogger relay whenever the rear window defogger
                                                                      system is turned on. Refer to Group 8N - Electrically
                                                                      Heated Systems for more information on the opera-
POWER MIRROR SYSTEM                                                   tion of the rear window defogger system.
  The power operated or power operated and heated                        The power mirror assembly cannot be repaired.
outside rear view mirrors allow the driver to adjust                  Only the mirror glass is serviced separately. If any
both outside mirrors electrically from the driver seat                other component of the power mirror unit is faulty or
position by operating a switch on the driver side                     damaged, the entire assembly must be replaced.
front door trim panel. The power mirrors receive bat-
tery current through a fuse in the junction block, and                POWER MIRROR SWITCH
will only operate when the ignition switch is in the                    Both the right and left power outside mirrors are
On or Accessory positions.                                            controlled by a single multi-function switch unit
  The heated mirror option includes an electric heat-                 located on the driver side front door trim panel. Two
ing grid behind the mirror glass in each outside mir-                 versions of this switch are offered. Models without
ror, which can clear the mirror glass of ice, snow, or                power windows or power locks have a stand-alone
fog. The heating grid receives fused battery current                  switch mounted in the driver side front door trim
through the rear window defogger relay only when                      panel. Models equipped with power windows and
the rear window defogger system is turned on. Refer                   power locks have a power mirror switch that is inte-
to Group 8N - Electrically Heated Systems for more                    gral to the Driver Door Module (DDM).
information on the rear window defogger system.                         Both versions of the switch are operated in the
                                                                      same manner. A three position rocker-type mirror
8T - 2    POWER MIRROR SYSTEMS                                                                               XJ
selector switch is moved right (right mirror control),        (4) Turn the ignition switch to the Off position.
left (left mirror control), or center to turn the power    Disconnect and isolate the battery negative cable.
mirrors off. Then one of four directional control but-     Remove the driver side front door trim panel and
tons is depressed to control movement of the selected      unplug the DDM wire harness connectors. Connect
mirror up, down, right, or left. The directional control   the battery negative cable. Turn the ignition switch
buttons of the DDM-mounted switch are illuminated          to the On position. Check for battery voltage at the
when the ignition switch is in the On or Accessory         fused ignition switch output circuit cavity of the
positions. The stand-alone switch is not illuminated.      12-way DDM wire harness connector. If OK, replace
   The stand-alone power mirror switch cannot be           the faulty DDM. If not OK, repair the open circuit to
repaired and, if faulty or damaged, it must be             the power window circuit breaker in the junction
replaced as a complete unit. If the DDM power mir-         block as required.
ror switch is faulty or damaged, the entire DDM unit          (5) If the problem being diagnosed is an inopera-
must be replaced.                                          tive power mirror electric heating grid, proceed as
                                                           follows. If not, go to Step 8. Disconnect and isolate
DOOR MODULE                                                the battery negative cable. Remove the front door
  A Driver Door Module (DDM) and a Passenger               trim panel on the side of the vehicle with the inoper-
Door Module (PDM) are used on all models equipped          ative mirror heating grid. Unplug the wire harness
with power locks and power windows. Each door              connector at the mirror. Check for continuity between
module houses both the front door power lock and           the ground circuit cavity in the body half of the
power window switches. In addition to the switches         power mirror wire harness connector and a good
for its own door, the DDM houses individual switches       ground. If OK, go to Step 6. If not OK, repair the
for each passenger door power window, a power win-         open circuit to ground as required.
dow lockout switch, the power mirror switch, and cir-         (6) Connect the battery negative cable. Turn the
cuitry to support the one-touch down feature of the        ignition switch to the On position. Turn on the rear
driver side front door power window. The PDM also          window defogger system. Check for battery voltage at
houses the control circuitry and the power lock and        the rear window defogger relay output circuit cavity
unlock relays for the power lock system.                   in the body half of the power mirror wire harness
  The DDM and the PDM are mounted to their                 connector. If OK, go to Step 7. If not OK, repair the
respective front door trim panels. The DDM and             open circuit to the rear window defogger relay as
PDM are serviced individually and cannot be                required.
repaired. If the DDM or PDM, or any of the switches           (7) Check for continuity between the ground cir-
and circuitry that they contain are faulty or dam-         cuit and the rear window defogger relay output cir-
aged, the complete DDM or PDM unit must be                 cuit cavities in the mirror half of the power mirror
replaced.                                                  wire harness connector. There should be continuity. If
                                                           not OK, replace the faulty power mirror. If OK, check
                                                           the resistance through the electric heating grid cir-
DIAGNOSIS AND TESTING                                      cuit. Correct resistance through the electric heating
                                                           grid should be from 10 to 16 ohms when measured at
POWER MIRROR SYSTEM                                        an ambient temperature of 21

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