2002 DODGE RAM glove box

(5) Reach through the glove box opening and
behind the glove box lamp and switch mounting
bracket to depress the retaining tabs on the top and
bottom of the glove box lamp and switch housing.
(6) While holding the retaining tabs depressed,
push the glove box lamp and switch unit out through
the hole in the mounting bracket on the instrument
panel glove box opening upper reinforcement.
(7) Remove the glove box lamp and switch unit
from the instrument panel.
INSTALLATION
(1) Reach through the glove box opening and
behind the glove box lamp and switch mounting
bracket to feed the instrument panel wire harness
connectors out through the hole in the glove box
lamp and switch housing mounting bracket.
(2) Position the glove box lamp and switch unit to
the instrument panel.
(3) Reconnect the instrument panel wire harness
connector to the connector receptacle on the back of
the glove box lamp and switch unit.
(4) Push the glove box lamp and switch unit into
the hole in the mounting bracket on the instrument
panel glove box opening upper reinforcement.
(5) Install the glove box onto the instrument panel.
(Refer to 23 - BODY/INSTRUMENT PANEL/GLOVE
BOX - INSTALLATION) for the procedures.
(6) Close the glove box.
(7) Reconnect the battery negative cable.
READING LAMP
DESCRIPTION
The overhead console in this vehicle is equipped
with two individual reading and courtesy lamps. The
lamp lenses are the only visible components of these
lamps. The reading and courtesy lamp lenses are
mounted in the overhead console housing between
the garage door opener storage bin and the sun-
glasses storage bin. Each lamp has its own switch,
bulb, reflector and lens; but both lamps share a com-
mon lamp housing within the overhead console.
The overhead console reading and courtesy lamps
operate on battery current that is provided at all
times, regardless of the ignition switch position. The
ground feed for the lamps is switched through the
integral reading and courtesy lamp switches or
through the door jamb switches. Each lamp is
designed and aimed to provide illumination that will
be directed only to that side of the vehicle on which
the lamp is located.The reading and courtesy lamp lenses, bulbs and
the lamp housing and reflector unit are available for
service replacement. The reading and courtesy lamp
switches, bulb holders and wiring are only available
as part of the overhead console wire harness. If
either of the lamp switches or bulb holders is faulty
or damaged, the entire overhead console wire har-
ness assembly must be replaced.
For service of the reading and courtesy lamp bulbs,
refer to the appropriate wiring information. The wir-
ing information includes wiring diagrams, proper
wire and connector repair procedures, details of wire
harness routing and retention, connector pin-out
information and location views for the various wire
harness connectors, splices and grounds.
OPERATION
All reading and courtesy lamps located in the over-
head console are activated by the door jamb switches.
When all of the doors are closed, these lamps can be
individually activated by depressing the correspond-
ing lens. When any door is open, depressing the lamp
lenses to activate the lamp switches will not turn the
lamps off.
See the owner's manual in the vehicle glove box for
more information on the use and operation of the
overhead console reading and courtesy lamps.
REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Insert a long, narrow, flat-bladed tool between
the curved (outboard) edge of the reading and cour-
tesy lamp lens and the overhead console housing
(Fig. 5).
(3) Gently pry inward and downward against the
lens until the latch tab in the center of the outboard
edge of the reading and courtesy lamp lens is disen-
gaged from the overhead console housing.
(4) Pull firmly on the lens toward the outboard
side of the vehicle to disengage the two pivot tabs on
the inboard edge of the reading and courtesy lamp
lens are disengaged from the overhead console hous-
ing.
(5) Remove the reading and courtesy lamp lens
from the overhead console housing.
8L - 36 LAMPS/LIGHTING - INTERIORBR/BE
GLOVE BOX LAMP AND SWITCH (Continued)

MESSAGE SYSTEMS
TABLE OF CONTENTS
page page
OVERHEAD CONSOLE
DESCRIPTION..........................1
STANDARD PROCEDURE
STANDARD PROCEDURE - COMPASS
CALIBRATION.........................4
STANDARD PROCEDURE - COMPASS
VARIATION ADJUSTMENT................4
STANDARD PROCEDURE - COMPASS
DEMAGNETIZING......................5
REMOVAL
OVERHEAD CONSOLE REMOVAL.........6
DISASSEMBLY
OVERHEAD CONSOLE DISASSEMBLY......7
ASSEMBLY
OVERHEAD CONSOLE ASSEMBLY........8
INSTALLATION
OVERHEAD CONSOLE INSTALLATION......8SPECIAL TOOLS
OVERHEAD CONSOLE SPECIAL TOOL.....9
COMPASS/MINI-TRIP COMPUTER
DESCRIPTION..........................9
OPERATION............................9
DIAGNOSIS AND TESTING - COMPASS
MINI-TRIP COMPUTER.................10
REMOVAL.............................11
INSTALLATION.........................11
AMBIENT TEMP SENSOR
DESCRIPTION.........................12
OPERATION...........................12
DIAGNOSIS AND TESTING - AMBIENT
TEMPERATURE SENSOR...............12
REMOVAL.............................12
INSTALLATION.........................13
OVERHEAD CONSOLE
DESCRIPTION
Three different overhead console units are avail-
able factory-installed options on this model, base,
premium and premium with vehicle theft security.
The base overhead console unit features a garage
door opener storage bin, a sunglasses storage bin and
two reading and courtesy lamps. The premium over-
head console has all of the features of the base unit,
but adds a compass mini-trip computer and/or vehi-
cle theft security LED. See the owner's manual in
the vehicle glove box for more information on the fea-
tures, use and operation of all of the overhead con-
sole components and systems. Refer toOverhead
Consolein the Contents of Wiring Diagrams for
complete circuit diagrams.
The premium overhead console (Fig. 1) includes
two front-mounted reading and courtesy lamps, a
garage door opener storage bin, and a sunglasses
storage bin. The premium overhead console includesa compass mini-trip computer. The base overhead
console uses the same overhead console housing, but
has a computer cover plug installed in place of the
compass mini-trip computer display module lens and
push buttons.
The rear of the overhead console is secured to two
rear mounting holes in the inner roof panel by two
plastic hook formations that are integral to the over-
head console housing. The front of the overhead con-
sole is secured to the two front mounting holes of the
inner roof panel by two plastic latches that are inte-
gral to the overhead console housing. A single electri-
cal connection joins the overhead console wire
harness to the roof wire harness for both the base
and premium overhead console units.
Following are general descriptions of the major
components used in the overhead console. See the
owner's manual in the vehicle glove box for more
information on the use and operation of the various
overhead console features.
BR/BEMESSAGE SYSTEMS 8M - 1

GARAGE DOOR OPENER STORAGE BIN
A compartment near the front of the overhead con-
sole is designed to hold most garage door opener
remote control transmitters. The transmitter is
mounted within the compartment with an adhesive-
backed hook and loop fastener patch and, when the
compartment is closed, a push button in the center of
the compartment door is depressed to actuate the
transmitter.
A transmitter mounting kit including the adhesive-
backed hook and loop fastener material is available
for service. The garage door opener storage bin door
and the push button with three assorted length
adapter pegs are also available for service replace-
ment.
The garage door opener storage compartment door
is opened by pressing the integral latch towards the
front of the vehicle. When the compartment door is
opened, the push button unit is removed from the
compartment by squeezing the latch tabs and pulling
the unit downward. With the push button removed,
the garage door opener can be installed in the com-
partment using the adhesive-backed hook and loop
fastener material provided.
With the transmitter mounted in the storage bin,
adapter pegs located on the garage door opener push
button unit are selected and mounted on one of two
posts on the back side of the push button. The com-
bination of the adapter peg length and the push but-
ton post location must be suitable to depress the
button of the transmitter when the push button in
the center of the garage door opener storage bin door
is depressed. When the proper combination has been
selected, the push button is reinstalled in the com-
partment and the compartment door is closed.
SUNGLASS STORAGE BIN
A sunglasses storage bin is included in the over-
head console. The storage bin is located near the rear
of the overhead console and is held in the closed posi-
tion by a latch that is integral to the storage bin
door. The interior of the bin is lined with a foam rub-
ber padding material to protect the sunglasses from
being scratched. Dampening springs that are located
on the back of the overhead console reading andcourtesy lamp housing contact the hinges of the sun-
glasses storage bin for a smooth opening action.
The sunglasses storage bin and door unit is avail-
able for service replacement. The hinge dampening
springs are serviced as a unit with the overhead con-
sole reading and courtesy lamp housing.
The sunglasses storage bin is opened by pressing
the latch on the rear edge of the door towards the
front of the vehicle, then pulling the bin downward to
the open position. The integral latch on the sun-
glasses bin door will automatically engage when the
bin is closed. See the owner's manual in the vehicle
glove box for more information on the use and oper-
ation of the sunglasses storage bin.
COMPASS
While in the compass/temperature mode, the com-
pass will display the direction in which the vehicle is
pointed using the eight major compass headings
(Examples: north is N, northeast is NE), along with
the outside ambient temperature. When the compass
unit is placed in the compass/compass in degrees
mode, the compass will display the direction the
vehicle is heading using the eight major compass
headings and in degrees (0 to 359 degrees). North is
0 degrees, East is 90 degrees, South is 180 degrees
and West is 270 degrees. It will not display the head-
ings in minutes or seconds.
The self-calibrating compass unit requires no
adjusting in normal use. The compass unit will com-
pensate for magnetism the body of the vehicle may
acquire during normal use. However, avoid placing
anything magnetic directly on the roof of the vehicle.
Magnetic mounts for an antenna, a repair order hat,
or a funeral procession flag can exceed the compen-
sating ability of the compass unit if placed on the
roof panel. If the vehicle roof should become magne-
tized, the demagnetizing and calibration procedures
found in this group may be required to restore proper
compass operation.
THERMOMETER
The thermometer displays the outside ambient
temperature in whole degrees. The temperature dis-
play can be changed from Fahrenheit to Celsius
1 - SUNGLASSES STORAGE BIN
2 - GARAGE DOOR OPENER STORAGE BIN DOOR
3 - COMPUTER LENS OR COVER PLUG
4 - HOOK AND LOOP FASTENER
5 - SECURITY INDICATOR LAMP
6 - COMPASS MINI-TRIP COMPUTER MODULE
7 - SCREW (3)
8 - SCREW (4)
9 - BULB HOLDERS10 - SWITCHES
11 - WIRE HARNESS
12 - SPRINGS (2)
13 - READING AND COURTESY LAMP HOUSING
14 - REFLECTORS
15 - OVERHEAD CONSOLE HOUSING
16 - LENSES
17 - BUMPER
18 - GARAGE DOOR OPENER PUSH BUTTON
BR/BEMESSAGE SYSTEMS 8M - 3
OVERHEAD CONSOLE (Continued)

will return to the last function being displayed before
the ignition was turned to the Off position. With the
ignition switch in the On position, momentarily
depressing and releasing the Step push button switch
will cause the compass-mini-trip computer to change
its mode of operation, and momentarily depressing
and releasing the U.S./Metric push button will cause
the unit to toggle between U.S. and Metric measure-
ments. While in either compass mode, depressing the
U.S./Metric push button for more than ten seconds
will toggle the display between the compass/temper-
ature and the compass/compass in degrees modes.
This compass mini-trip computer features several
functions that can be reset. If both the Step and U.S./
Metric push buttons are depressed at the same time
with the ignition switch in the On position, the trip
computer information that can be reset is reset.
Depressing and releasing the Step and U.S./Metric
push buttons at the same time for more than 100
milliseconds, but not more than one second while in
any display mode (except the compass/temperature
mode) will cause a local reset. A local reset affects
only the function currently displayed. See the Reset
Chart below for more information on this feature.
Performing a local reset while in the compass/tem-
perature mode enters the module into the compass
variance setting mode.
Depressing and releasing the Step and U.S./Metric
push buttons at the same time for more than two
seconds while in any display mode (except the com-
pass/temperature mode) will cause a global reset. A
global reset changes all of the trip computer func-
tions that can be reset.
For more information on the features and control
functions of the compass mini-trip computer, see the
owner's manual in the vehicle glove box.
DIAGNOSIS AND TESTING - COMPASS
MINI-TRIP COMPUTER
If the problem with the compass mini-trip com-
puter module is an inoperative security indicator
lamp, refer toSecurity Indicator Lampin Vehicle
Theft/Security Systems. If the problem with the com-
pass mini-trip computer module is an ªOCº or ªSCº in
the compass/thermometer display, refer toAmbient
Temperature Sensorin this section. If the problem
with the compass mini-trip computer module is an
inaccurate or scrambled display, refer toCMTC Self-
Diagnostic Testin this section. If the problem with
the compass mini-trip computer module is incorrect
Vacuum Fluorescent Display (VFD) dimming levels,
use a DRBtscan tool and the proper Diagnostic Pro-
cedures manual to test for the correct dimming mes-
sage inputs being received from the instrument
cluster over the Chrysler Collision Detection (CCD)
data bus. If the problem is a no-display condition,use the following procedures. For complete circuit
diagrams, refer toOverhead Consolein the Con-
tents of Wiring Diagrams.
(1) Check the fused B(+) fuse in the junction block.
If OK, go to Step 2. If not OK, repair the shorted cir-
cuit or component as required and replace the faulty
fuse.
(2) Check for battery voltage at the fused B(+) fuse
in the junction block. If OK, go to Step 3. If not OK,
repair the open fused B(+) circuit to the battery as
required.
(3) Check the fused ignition switch output (run/
start) fuse in the junction block. If OK, go to Step 4.
If not OK, repair the shorted circuit or component as
required and replace the faulty fuse.
(4) Turn the ignition switch to the On position.
Check for battery voltage at the fused ignition switch
output (run/start) fuse in the junction block. If OK,
go to Step 5. If not OK, repair the open fused ignition
switch output (run/start) circuit to the ignition switch
as required.
(5) Turn the ignition switch to the Off position.
Disconnect and isolate the battery negative cable.
Remove the overhead console. Check for continuity
between the ground circuit cavities of the roof wire
harness connector for the overhead console and a
good ground. There should be continuity. If OK, go to
Step 6. If not OK, repair the open ground circuit to
ground as required.
(6) Connect the battery negative cable. Check for
battery voltage at the fused B(+) circuit cavity of the
roof wire harness connector for the overhead console.
If OK, go to Step 7. If not OK, repair the open fused
B(+) circuit to the junction block fuse as required.
(7) Turn the ignition switch to the On position.
Check for battery voltage at the fused ignition switch
output (run/start) circuit cavity of the roof wire har-
ness connector for the overhead console. If OK, refer
toSelf-Diagnostic Testin the Diagnosis and Test-
ing section of this group for further diagnosis of the
compass mini-trip computer module and the CCD
data bus. If not OK, repair the open fused ignition
switch output (run/start) circuit to the junction block
fuse as required.
CMTC SELF-DIAGNOSTIC TEST
A self-diagnostic test is used to determine that the
compass mini-trip computer module is operating
properly electrically. Initiate the self-diagnostic test
as follows:
(1) With the ignition switch in the Off position,
simultaneously depress and hold the Step button and
the U.S./Metric button.
(2) Turn the ignition switch to the On position.
(3) Continue to hold both buttons depressed until
the compass mini-trip computer module enters the
8M - 10 MESSAGE SYSTEMSBR/BE
COMPASS/MINI-TRIP COMPUTER (Continued)

The RKE transmitter operates on two Duracell
DL2016, Panasonic CR2016 (or equivalent) batteries.
Typical battery life is from one to two years. The
RKE transmitter cannot be repaired and, if faulty or
damaged, it must be replaced.
OPERATION
See the owner's manual in the vehicle glove box for
more information on the features, use and operation
of the Remote Keyless Entry (RKE) transmitters.
DIAGNOSIS AND TESTING - REMOTE KEYLESS
ENTRY TRANSMITTER
(1) Replace the Remote Keyless Entry (RKE)
transmitter batteries. (Refer to 8 - ELECTRICAL/
POWER LOCKS/REMOTE KEYLESS ENTRY
TRANSMITTER - STANDARD PROCEDURE - RKE
TRANSMITTER BATTERIES). Test each of the RKE
transmitter functions. If OK, discard the faulty bat-
teries. If not OK, go to Step 2.
(2) Program the suspect RKE transmitter and
another known good transmitter into the RKE
receiver. (Refer to 8 - ELECTRICAL/POWER
LOCKS/REMOTE KEYLESS ENTRY TRANSMIT-
TER - STANDARD PROCEDURE - RKE TRANS-
MITTER PROGRAMMING).
(3) Test the RKE system operation with both
transmitters. If both transmitters fail to operate the
power lock system, a DRBIIItscan tool is required
for further diagnosis of the RKE system. Refer to the
appropriate diagnostic information. If the known
good RKE transmitter operates the power locks and
the suspect transmitter does not, replace the faulty
RKE transmitter.
NOTE: Be certain to perform the RKE Transmitter
Programming procedure again following this test.
This procedure will erase the access code of the
test transmitter from the RKE receiver.
STANDARD PROCEDURE
STANDARD PROCEDURE - RKE TRANSMITTER
PROGRAMMING
To program the Remote Keyless Entry (RKE)
transmitter access codes into the RKE receiver in the
high-line or premium Central Timer Module (CTM)
requires the use of a DRBIIItscan tool. Refer to the
appropriate diagnostic information.
STANDARD PROCEDURE - REMOTE KEYLESS
ENTRY TRANSMITTER BATTERIES
The Remote Keyless Entry (RKE) transmitter case
snaps open and shut for battery access. To replace
the RKE transmitter batteries:
(1) Using a trim stick or a thin coin, gently pry at
the notch in the center seam of the RKE transmitter
case halves located near the key ring until the two
halves unsnap.
(2) Lift the back half of the transmitter case off of
the RKE transmitter.
(3) Remove the two batteries from the RKE trans-
mitter.
(4) Replace the two batteries with new Duracell
DL2016, or their equivalent. Be certain that the bat-
teries are installed with their polarity correctly ori-
ented.
(5) Align the two RKE transmitter case halves
with each other, and squeeze them firmly and evenly
together using hand pressure until they snap back
into place.
POWER LOCK SWITCH
DESCRIPTION
The power lock system can be controlled by a two-
way momentary switch integral to the power window
and lock switch and bezel unit on the trim panel of
each front door. Each power lock switch is illumi-
nated by a Light-Emitting Diode (LED) that is inte-
gral to the switch paddle. The LED of each switch is
illuminated whenever the ignition switch is in the
On position.
The power lock switches and their LEDs cannot be
adjusted or repaired and, if faulty or damaged, the
entire power window and lock switch and bezel unit
must be replaced.
OPERATION
On models with a base version of the Central
Timer Module (CTM), the power lock switches are
hard-wired to the power lock motors. The power lock
switch provides the correct battery and ground feeds
to the power lock motors to lock or unlock the door
latches.
On models with a high-line or premium version of
the CTM, the power lock switch controls battery cur-
rent signals to the lock and unlock sense inputs of
the CTM. The CTM then relays the correct battery
and ground feeds to the power lock motors to lock or
unlock the door latches.
8N - 8 POWER LOCKSBR/BE
REMOTE KEYLESS ENTRY TRANSMITTER (Continued)

POWER MIRRORS
TABLE OF CONTENTS
page page
POWER MIRRORS
DESCRIPTION.........................11
OPERATION...........................11
AUTOMATIC DAY / NIGHT MIRROR
DESCRIPTION.........................11
OPERATION...........................12
DIAGNOSIS AND TESTING - AUTOMATIC
DAY/NIGHT MIRROR...................12
REMOVAL.............................13
INSTALLATION.........................13
POWER MIRROR SWITCH
DESCRIPTION.........................13OPERATION...........................13
REMOVAL.............................13
INSTALLATION.........................14
SIDEVIEW MIRROR
DESCRIPTION.........................14
OPERATION...........................14
DIAGNOSIS AND TESTING - SIDEVIEW
MIRROR............................14
REMOVAL.............................15
POWER MIRRORS
DESCRIPTION
AUTOMATIC DAY / NIGHT MIRROR
The automatic day/night mirror system is able to
automatically change the reflectance of the inside
rear view mirror in order to reduce the glare of head-
lamps approaching the vehicle from the rear. The
automatic day/night rear view mirror receives bat-
tery current through a fuse in the junction block only
when the ignition switch is in the On position.
OUTSIDE REAR VIEW MIRROR
The heated mirror option includes an electric heat-
ing grid behind the mirror glass in each outside mir-
ror, which can clear the mirror glass of ice, snow, or
fog. The heating grid receives fused battery current
through the heated mirror relay in the heater and air
conditioner control only when the ignition switch is
in the On position, and the heated mirror system is
turned on. (Refer to 8 - ELECTRICAL/HEATED
MIRRORS - DESCRIPTION) for more information.
Refer to the owner's manual in the vehicle glove
box for more information on the features, use and
operation of the power mirror system.
OPERATION
AUTOMATIC DAY / NIGHT MIRROR
A switch located on the bottom of the automatic
day/night mirror housing allows the vehicle operator
to select whether the automatic dimming feature is
operational. When the automatic day/night mirror isturned on, the mirror switch is lighted by an integral
Light-Emitting Diode (LED). The mirror will auto-
matically disable its self-dimming feature whenever
the vehicle is being driven in reverse.
Refer to the owner's manual in the vehicle glove
box for more information on the features, use and
operation of the automatic day/night mirror system.
OUTSIDE REAR VIEW MIRROR
The heated mirror option includes an electric heat-
ing grid behind the mirror glass in each outside mir-
ror, which can clear the mirror glass of ice, snow, or
fog. The heating grid receives fused battery current
through the heated mirror relay in the heater and air
conditioner control only when the ignition switch is
in the On position, and the heated mirror system is
turned on. (Refer to 8 - ELECTRICAL/HEATED
MIRRORS - OPERATION) for more information.
Refer to the owner's manual in the vehicle glove
box for more information on the features, use and
operation of the power mirror system.
AUTOMATIC DAY / NIGHT
MIRROR
DESCRIPTION
The automatic day/night mirror uses a thin layer
of electrochromic material between two pieces of con-
ductive glass to make up the face of the mirror.
When the mirror switch is in the On position, two
photocell sensors are used by the mirror circuitry to
monitor external light levels and adjust the reflec-
tance of the mirror.
BR/BEPOWER MIRRORS 8N - 11

POWER SEAT SYSTEM
TABLE OF CONTENTS
page page
POWER SEAT SYSTEM
DESCRIPTION.........................16
OPERATION...........................16
DIAGNOSIS AND TESTING - POWER SEAT
SYSTEM............................16
DRIVER POWER SEAT SWITCH
DESCRIPTION.........................17
OPERATION...........................17
DIAGNOSIS AND TESTING - DRIVER POWER
SEAT SWITCH........................17
REMOVAL.............................18
INSTALLATION.........................18
LUMBAR CONTROL SWITCH
DESCRIPTION.........................18
OPERATION...........................19
REMOVAL.............................19
LUMBAR MOTOR
DESCRIPTION.........................19OPERATION...........................19
DIAGNOSIS AND TESTING - LUMBAR MOTOR . 19
PASSENGER POWER SEAT SWITCH
DESCRIPTION.........................20
OPERATION...........................20
DIAGNOSIS AND TESTING - PASSENGER
POWER SEAT SWITCH.................20
REMOVAL.............................21
INSTALLATION.........................21
POWER SEAT TRACK
DESCRIPTION.........................21
OPERATION...........................22
DIAGNOSIS AND TESTING - POWER SEAT
TRACK.............................22
REMOVAL.............................22
INSTALLATION.........................22
POWER SEAT SYSTEM
DESCRIPTION
The power seat system option allows the driver (or
passenger on SLT Plus with power seats) to electri-
cally adjust the seat position for optimum control and
comfort using the power seat switches located on the
outboard seat cushion side shield. The power seat
system allows the seating position to be adjusted for-
ward, rearward, front up, front down, rear up, or
rear down. The power seat system receives battery
current through a fuse in the Power Distribution
Center and a circuit breaker in the junction block,
regardless of the ignition switch position.
The quad cab models equipped with the power seat
option also feature a power operated lumbar support
in the seat back. The power lumbar support allows
the user to inflate or deflate a bladder located in the
lower seat back to achieve optimum comfort and sup-
port in the lower lumbar region of the spinal column.
The power lumbar support shares the battery feed
circuit of the power seat system.
The power seat system includes the power seat
adjuster and motors unit, the power lumbar support
bladder and electric pump (quad cab only), the power
seat switch, and the circuit breaker. Following are
general descriptions of the major components in the
power seat system. Refer toHeated Seat Systemfor information on the individually controlled heated
front seats. Refer to the owner's manual in the vehi-
cle glove box for more information on the features,
use and operation of the power seat system.
OPERATION
The power seat system allows the driver and/or
front passenger seating positions to be adjusted elec-
trically and independently using the separate power
seat switches found on the outboard seat cushion
side shield of each front seat. See the owner's manual
in the vehicle glove box for more information on the
features, use and operation of the power seat system.
DIAGNOSIS AND TESTING - POWER SEAT
SYSTEM
Before any testing of the power seat system is
attempted, the battery should be fully-charged and
all wire harness connections and pins cleaned and
tightened to ensure proper continuity and grounds.
For circuit descriptions and diagrams, refer to Wiring
Diagrams.
With the dome lamp on, apply the power seat
switch in the direction of the failure. If the dome
lamp dims, the seat may be jamming. Check under
and behind the seat for binding or obstructions. If
the dome lamp does not dim, proceed with testing of
the individual components and circuits.
8N - 16 POWER SEAT SYSTEMBR/BE

DRIVER POWER SEAT SWITCH
DESCRIPTION
The power seat in standard cab models can be
adjusted in eight different directions, up, down, front
up, front down, rear up, rear down, rearward and for-
ward. The power seat switch for quad cab models has
an additional switch knob for adjusting the power
lumbar support. The switch is located on the lower
outboard side of the seat cushion on the seat cushion
side shield (Fig. 1) on all models. Refer to the owner's
manual in the vehicle glove box for more information
on the power seat switch functions and the seat
adjusting procedures.
The individual switches in the power seat switch
module cannot be repaired. If one switch is damaged
or faulty, the entire power seat switch module must
be replaced.
OPERATION
When a power switch control knob or knobs are
actuated, a battery feed and a ground path are
applied through the switch contacts to the power seat
track or recliner adjuster motor. The selected
adjuster motor operates to move the seat track or
recliner through its drive unit in the selected direc-
tion until the switch is released, or until the travel
limit of the adjuster is reached. When the switch is
moved in the opposite direction, the battery feed and
ground path to the motor are reversed through the
switch contacts. This causes the adjuster motor to
run in the opposite direction.No power seat switch should be held applied in any
direction after the adjuster has reached its travel
limit. The power seat adjuster motors each contain a
self-resetting circuit breaker to protect them from
overload. However, consecutive or frequent resetting
of the circuit breaker must not be allowed to con-
tinue, or the motor may be damaged.
DIAGNOSIS AND TESTING - DRIVER POWER
SEAT SWITCH
The following procedure can be used to test the
power seat switch on standard and quad cab models.
Some quad cab trucks utilize a additional power lum-
bar option, if the switch being tested does not have
the lumbar option simply ignore the lumbar portion
of the test. For circuit descriptions and diagrams,
refer to Wiring Diagrams.
(1) Disconnect and isolate the battery negative
cable.
(2) Remove the power seat switch from the power
seat.
(3) Use an ohmmeter to test the continuity of the
power seat switches in each position. See the Power
Seat Switch Continuity chart (Fig. 2). If OK, see
Power Seat Adjuster and Motors or Power Lumbar
Adjuster and Motor in the Diagnosis and Testing sec-
tion of this group. If not OK, replace the faulty power
seat switch unit.
Fig. 1 Power Seat Switch - Standard Cab
1 - SEAT SWITCH BEZEL
Fig. 2 Testing Driver Power Seat Switch
BR/BEPOWER SEAT SYSTEM 8N - 17