ECU DODGE RAM 2002 Service Repair Manual

Hard wired circuitry connects many of the VTSS
components to each other through the electrical sys-
tem of the vehicle. These hard wired circuits are
integral to several wire harnesses, which are routed
throughout the vehicle and retained by many differ-
ent methods. These circuits may be connected to each
other, to the vehicle electrical system and to the
VTSS components through the use of a combination
of soldered splices, splice block connectors, and many
different types of wire harness terminal connectors
and insulators. Refer to the appropriate wiring infor-
mation. The wiring information includes wiring dia-
grams, proper wire and connector repair procedures,
further details on wire harness routing and reten-
tion, as well as pin-out and location views for the
various wire harness connectors, splices and grounds.
OPERATION
A Central Timer Module (CTM) is used on this
model to control and integrate many of the electronic
functions and features included in the Vehicle Theft
Security System (VTSS). In the VTSS, the CTM
receives inputs indicating the status of the door ajar
switches, the door cylinder lock switch, and the igni-
tion switch. The programming in the CTM allows it
to process the information from all of these inputs
and send control outputs to energize or de-energize
the horn relay, the headlamp relay, and the VTSS
indicator. The control of these inputs and outputs are
what constitute all of the features of the VTSS. Fol-
lowing is information on the operation of each of the
VTSS features. Refer to the owner's manual in the
vehicle glove box for more information on the fea-
tures, use and operation of the VTSS.
ENABLING
The high-line or premium version of the CTM must
have the VTSS function electronically enabled in
order for the VTSS to perform as designed. The logic
in the CTM keeps its VTSS function dormant until it
is enabled using a DRBIIItscan tool. The VTSS
function of the high-line or premium CTM is enabled
on vehicles equipped with the VTSS option at the
factory, but a service replacement CTM must be
VTSS-enabled by the dealer using a DRBIIItscan
tool. Refer to the appropriate diagnostic information.
The VTSS engine no-run feature is disabled when
it is shipped from the factory. This is done by pro-
gramming within the Powertrain Control Module
(PCM). The logic in the PCM prevents the VTSS
engine no-run feature from arming until the engine
start counter within the PCM sees twenty enginestarts. The VTSS no-run feature must be enabled by
the dealer when the vehicle is received from the
assembly plant. Once the VTSS engine no-run fea-
ture has been enabled, it cannot be disabled unless
the PCM is replaced with a new unit. The same
VTSS engine no-run feature enable logic will apply
anytime the PCM is replaced with a new unit.
ARMING
Passive arming of the VTSS occurs when the vehi-
cle is exited with the key removed from the ignition
switch, the headlamps are turned off, and the doors
are locked while they are open using the power lock
switch, or locked after they are closed by turning
either front door lock cylinder to the lock position
using the key. The power lock switch will not func-
tion if the key is in the ignition switch or the head-
lamps are turned on with the driver side front door
open. The VTSS will not arm if the doors are locked
using the mechanical lock button. Active arming of
the VTSS occurs when the ªLockº button on the
Remote Keyless Entry (RKE) transmitter is
depressed to lock the vehicle. For active arming to
occur, the doors must be closed and the ignition
switch must be in the Off position when the RKE
transmitter ªLockº button is depressed. However,
once the VTSS arming process has been completed,
the ignition switch can be turned to the Accessory
position without triggering the alarm.
Once the VTSS begins passive or active arming,
the security indicator lamp in the overhead console
will flash rapidly for about fifteen seconds. This indi-
cates that the VTSS arming is in progress. Turning a
key in the ignition switch, opening a door, or unlock-
ing a door by any means during the fifteen second
arming process will cause the VTSS indicator to stop
flashing and the arming process to abort. Once the
fifteen second arming function is successfully com-
pleted, the indicator will flash at a slower rate, indi-
cating that the VTSS is armed.
DISARMING
Passive disarming of the VTSS occurs when the
vehicle is unlocked using the key to unlock either
front door. Active disarming of the VTSS occurs when
the vehicle is unlocked by depressing the ªUnlockº
button of the RKE transmitter. Once the alarm has
been activated (horn pulsing, headlamps flashing,
and the engine no-run feature), either disarming
method will also deactivate the alarm. Depressing
the ªPanicº button on the RKE transmitter willnot
disarm the VTSS.
8Q - 2 VEHICLE THEFT SECURITYBR/BE
VEHICLE THEFT SECURITY (Continued)

POWER-UP MODE
When the armed VTSS senses that the battery has
been disconnected and reconnected, it enters its pow-
er-up mode. In the power-up mode the alarm system
remains armed following a battery failure or discon-
nect. If the VTSS was armed prior to a battery dis-
connect or failure, the technician or vehicle operator
will have to actively or passively disarm the alarm
system after the battery is reconnected. The pow-
er-up mode will also apply if the battery goes dead
while the system is armed, and battery jump-starting
is attempted. The engine no-run feature will prevent
the engine from starting until the alarm system has
been actively or passively disarmed. The VTSS will
be armed until the technician or vehicle operator has
actively or passively disarmed the alarm system. If
the VTSS is in the disarmed mode prior to a battery
disconnect or failure, it will remain disarmed after
the battery is reconnected or replaced, or if jump-
starting is attempted.
TAMPER ALERT
The VTSS tamper alert feature will sound the horn
three times upon disarming, if the alarm was trig-
gered and has since timed-out (about fifteen min-
utes). This feature alerts the vehicle operator that
the VTSS alarm was activated while the vehicle was
unattended.
DIAGNOSIS AND TESTING - VEHICLE THEFT
SECURITY SYSTEM
The VTSS-related hard wired inputs to and out-
puts from the high-line or premium Central Timer
Module (CTM) may be diagnosed and tested using
conventional diagnostic tools and procedures. Refer
to the appropriate wiring information. The wiring
information includes wiring diagrams, proper wire
and connector repair procedures, further details on
wire harness routing and retention, as well as pin-
out and location views for the various wire harness
connectors, splices and grounds.
However, conventional diagnostic methods may not
prove conclusive in the diagnosis of the CTM, the
Powertrain Control Module (PCM), or the Chrysler
Collision Detection (CCD) data bus network. In order
to obtain conclusive testing of the VTSS, the CTM,
the PCM, and the CCD data bus network must also
be checked. The most reliable, efficient, and accurate
means to diagnose the VTSS requires the use of a
DRBIIItscan tool. Refer to the appropriate diagnos-
tic information. The DRBIIItscan tool can provide
confirmation that the CCD data bus network is func-
tional, that all of the electronic modules are sending
and receiving the proper messages over the CCD
data bus, and that these modules are receiving the
proper hard wired inputs and responding with theproper hard wired outputs needed to perform their
functions. See the ªVehicle Theft Security Systemº
menu item on the DRBIIItscan tool.
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, DISABLE THE AIRBAG SYSTEM BEFORE
ATTEMPTING ANY STEERING WHEEL, STEERING
COLUMN, OR INSTRUMENT PANEL COMPONENT
DIAGNOSIS OR SERVICE. DISCONNECT AND ISO-
LATE THE BATTERY NEGATIVE (GROUND) CABLE,
THEN WAIT TWO MINUTES FOR THE AIRBAG SYS-
TEM CAPACITOR TO DISCHARGE BEFORE PER-
FORMING FURTHER DIAGNOSIS OR SERVICE. THIS
IS THE ONLY SURE WAY TO DISABLE THE AIRBAG
SYSTEM. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIR-
BAG DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.
VTSS INDICATOR
DESCRIPTION
The Vehicle Theft Security System (VTSS) indica-
tor consists of a red Light-Emitting Diode (LED)
located on the electronic circuit board of the Compass
Mini-Trip Computer (CMTC) within the overhead
console. The LED extends through a hole in the
CMTC lens located near the forward end of the over-
head console housing near the windshield.
The VTSS indicator cannot be adjusted or repaired
and, if faulty or damaged, the entire CMTC unit
must be replaced. (Refer to 8 - ELECTRICAL/OVER-
HEAD CONSOLE/COMPASS/MINI-TRIP COM-
PUTER - DESCRIPTION).
OPERATION
The Vehicle Theft Security System (VTSS) indica-
tor gives a visible indication of the VTSS arming sta-
tus. One side of Light-Emitting Diode (LED) in the
VTSS indicator is connected to battery current
through a fused B(+) circuit and a fuse in the Junc-
tion Block (JB), so the indicator remains functional
regardless of the ignition switch position. The other
side of the LED is hard wired to the Central Timer
Module (CTM), which controls the operation of the
VTSS indicator by pulling this side of the LED cir-
cuit to ground. When the VTSS arming is in
progress, the CTM will flash the LED rapidly on and
off for about fifteen seconds. When the VTSS has
been successfully armed, the CTM will flash the LED
on and off continually at a much slower rate until
the VTSS has been disarmed. The VTSS indicator
can be diagnosed using conventional diagnostic tools
and methods.
BR/BEVEHICLE THEFT SECURITY 8Q - 3
VEHICLE THEFT SECURITY (Continued)

DIAGNOSIS AND TESTING - VTSS INDICATOR
The diagnosis found here addresses an inoperative
Vehicle Theft Security System (VTSS) indicator con-
dition. If the problem being diagnosed is related to
indicator accuracy, be certain to confirm that the
problem is with the indicator and not with an inop-
erative VTSS. (Refer to 8 - ELECTRICAL/VEHICLE
THEFT SECURITY SYSTEM- DIAGNOSIS AND
TESTING). If no VTSS problem is found, the follow-
ing procedure will help to locate a short or open in
the VTSS indicator control circuit. Refer to the
appropriate wiring information. The wiring informa-
tion includes wiring diagrams, proper wire and con-
nector repair procedures, details of wire harness
routing and retention, connector pin-out information
and location views for the various wire harness con-
nectors, splices and grounds.
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, DISABLE THE AIRBAG SYSTEM BEFORE
ATTEMPTING ANY STEERING WHEEL, STEERING
COLUMN, OR INSTRUMENT PANEL COMPONENT
DIAGNOSIS OR SERVICE. DISCONNECT AND ISO-
LATE THE BATTERY NEGATIVE (GROUND) CABLE,
THEN WAIT TWO MINUTES FOR THE AIRBAG SYS-
TEM CAPACITOR TO DISCHARGE BEFORE PER-
FORMING FURTHER DIAGNOSIS OR SERVICE. THIS
IS THE ONLY SURE WAY TO DISABLE THE AIRBAG
SYSTEM. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIR-
BAG DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.
(1) Check the fused B(+) fuse (Fuse 12 - 10
ampere) in the Junction Block (JB). If OK, go to Step
2. If not OK, repair the shorted circuit or component
as required and replace the faulty fuse.(2) Check for battery voltage at the fused B(+) fuse
(Fuse 12 - 10 ampere) in the JB. If OK, go to Step 3.
If not OK, repair the open fused B(+) circuit between
the JB and the Power Distribution Center (PDC) as
required.
(3) Disconnect and isolate the battery negative
cable. Disconnect the body wire harness connector for
the Compass Mini-Trip Computer (CMTC) from the
CMTC connector receptacle. Reconnect the battery
negative cable. Check for battery voltage at the fused
B(+) circuit cavity of the body wire harness connector
for the CMTC. If OK, go to Step 4. If not OK, repair
the open fused B(+) circuit between the CMTC indi-
cator and the JB as required.
(4) Disconnect and isolate the battery negative
cable. Disconnect the instrument panel wire harness
connector (Connector C2) for the Central Timer Mod-
ule (CTM) from the CTM connector receptacle. Check
for continuity between the VTSS indicator driver cir-
cuit cavity of the body wire harness connector for the
CMTC and a good ground. There should be no conti-
nuity. If OK, go to Step 5. If not OK, repair the
shorted VTSS indicator driver circuit between the
CMTC and the CTM as required.
(5) Check for continuity between the VTSS indica-
tor driver circuit cavities of the instrument panel
wire harness connector (Connector C2) for the CTM
and the body wire harness connector for the CMTC.
There should be continuity. If OK, replace the faulty
CMTC indicator. If not OK, repair the open VTSS
indicator driver circuit between the CMTC and the
CTM as required.
8Q - 4 VEHICLE THEFT SECURITYBR/BE
VTSS INDICATOR (Continued)

WIPERS/WASHERS
TABLE OF CONTENTS
page page
WIPERS/WASHERS
DESCRIPTION..........................1
OPERATION............................2
DIAGNOSIS AND TESTING - WIPER &
WASHER SYSTEM.....................3
CLEANING - WIPER & WASHER SYSTEM.....6
INSPECTION - WIPER & WASHER SYSTEM . . . 6
WASHER FLUID LEVEL SWITCH
DESCRIPTION..........................7
OPERATION............................7
REMOVAL.............................8
INSTALLATION..........................8
WASHER HOSES/TUBES
DESCRIPTION..........................8
OPERATION............................8
WASHER NOZZLE
DESCRIPTION..........................9
OPERATION............................9
REMOVAL.............................9
INSTALLATION..........................9
WASHER PUMP/MOTOR
DESCRIPTION..........................9
OPERATION............................9
REMOVAL.............................10
INSTALLATION.........................10
WASHER RESERVOIR
DESCRIPTION.........................10OPERATION...........................10
REMOVAL.............................10
INSTALLATION.........................11
WIPER ARM
DESCRIPTION.........................11
OPERATION...........................11
REMOVAL.............................12
INSTALLATION.........................12
WIPER BLADE
DESCRIPTION.........................12
OPERATION...........................13
REMOVAL.............................13
INSTALLATION.........................13
WIPER MODULE
DESCRIPTION.........................13
OPERATION...........................14
REMOVAL.............................14
INSTALLATION.........................14
WIPER RELAY
DESCRIPTION.........................15
OPERATION...........................15
DIAGNOSIS AND TESTING - WIPER RELAY . . . 16
REMOVAL.............................17
INSTALLATION.........................17
WIPERS/WASHERS
DESCRIPTION
An electrically operated intermittent wiper and
washer system is standard factory-installed safety
equipment on this model. The wiper and washer sys-
tem includes the following major components, which
are described in further detail elsewhere in this ser-
vice information:
²Central Timer Module- The Central Timer
Module (CTM) is located under the driver side end of
the instrument panel, inboard of the instrument
panel steering column opening. A base version of the
CTM is used on base models of this vehicle. The base
version of the CTM combines the functions of a
chime module and an intermittent wipe module in a
single unit. The high-line version of the CTM is used
on high-line vehicles. The high-line CTM provides all
of the functions of the base version of the CTM, but
also is used to control and integrate many additionalelectronic functions and features included on high-
line models. The premium version of the CTM is the
same as the high-line version, but is used only on
models equipped with the heated seat option. The
high-line and premium versions of the CTM contain
integrated circuitry, a central processing unit and the
programming to provide all of the proper wiper and
washer system features based upon the monitored
inputs. The high-line and premium CTM circuitry
monitors hard wired switch inputs, as well as mes-
sage inputs received from other vehicle electronic
modules on the Chrysler Collision Detection (CCD)
data bus network. (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/BODY CONTROL/
CENTRAL TIMER MODULE - DESCRIPTION).
²Multi-Function Switch- The multi-function
switch is secured to the left side of the steering col-
umn, just below the steering wheel. Only the control
stalk for the multi-function switch is visible, the
remainder of the switch is concealed beneath the
steering column shrouds. The multi-function switch
BR/BEWIPERS/WASHERS 8R - 1

contains all of the switches for both the wiper and
washer systems.
²Washer Fluid Level Switch- The washer fluid
level switch is located in a dedicated hole on the
lower rear side of the washer reservoir, above the
washer pump/motor unit near the left front corner of
the engine compartment.
²Washer Nozzles- The dual fluidic washer noz-
zles are secured with integral snap features to dedi-
cated openings in the cowl plenum cover/grille panel
located near the base of the windshield. The washer
plumbing fittings for the washer nozzles are con-
cealed beneath the cowl plenum cover/grille panel.
²Washer Pump/Motor- The washer pump/mo-
tor unit is located in a dedicated hole on the lower
rear side of the washer reservoir near the left front
corner of the engine compartment.
²Washer Reservoir- The washer reservoir is
secured to the left side of the radiator fan shroud in
the left front corner of the engine compartment.
²Wiper Arms- The two wiper arms are secured
to the two wiper pivots, which extend through the
cowl plenum cover/grille panel located near the base
of the windshield.
²Wiper Blades- The two wiper blades are
secured to the two wiper arms, and are parked on
the glass near the bottom of the windshield when the
wiper system is not in operation.
²Wiper Module- The wiper pivots are the only
visible components of the wiper module. The remain-
der of the module is concealed within the cowl ple-
num beneath the cowl plenum cover/grille panel. The
wiper module includes the module bracket, the single
wiper motor, the wiper linkage, and the two wiper
pivots.
²Wiper Relay- The wiper relay is located in the
Power Distribution Center (PDC) in the engine com-
partment near the battery.
Features of the wiper and washer system include
the following:
²Continuous Wipe Modes- The two-speed
wiper motor and the internal circuitry of the multi-
function switch work in concert to provide two con-
tinuous wipe cycles, low speed or high speed.
²Intermittent Wipe Mode- The internal cir-
cuitry of the multi-function switch, the CTM, and the
wiper relay work in concert to provide an intermit-
tent wipe mode with multiple delay interval selec-
tions. On models with a high-line or premium CTM,
the CTM also automatically adjusts each manually
selected delay interval to compensate for vehicle
speed.
²Washer Mode- When the washer system is
activated with the multi-function switch while the
wiper system is operating, washer fluid will be dis-
pensed onto the windshield glass through the washernozzles for as long as the washer pump/motor is
energized.
²Wipe-After-Wash Mode- The internal circuitry
of the CTM provides a wipe-after-wash feature
which, if the wipers are turned Off, will operate the
washer pump/motor and the wipers for as long as the
washer system is activated, then provide several
additional wipe cycles after the washer system is
deactivated before parking the wiper blades near the
base of the windshield.
Hard wired circuitry connects the wiper and
washer system components to the electrical system of
the vehicle. These hard wired circuits are integral to
several wire harnesses, which are routed throughout
the vehicle and retained by many different methods.
These circuits may be connected to each other, to the
vehicle electrical system and to the wiper and washer
system components through the use of a combination
of soldered splices, splice block connectors, and many
different types of wire harness terminal connectors
and insulators. Refer to the appropriate wiring infor-
mation. The wiring information includes wiring dia-
grams, proper wire and connector repair procedures,
further details on wire harness routing and reten-
tion, as well as pin-out and location views for the
various wire harness connectors, splices and grounds.
OPERATION
The wiper and washer system is intended to pro-
vide the vehicle operator with a convenient, safe, and
reliable means of maintaining visibility through the
windshield glass. The various components of this sys-
tem are designed to convert electrical energy pro-
duced by the vehicle electrical system into the
mechanical action of the wiper blades to wipe the
outside surface of the glass, as well as into the
hydraulic action of the washer system to apply
washer fluid stored in an on-board reservoir to the
area of the glass to be wiped. When combined, these
components provide the means to effectively main-
tain clear visibility for the vehicle operator by remov-
ing excess accumulations of rain, snow, bugs, mud, or
other minor debris from the outside windshield glass
surface that might be encountered while driving the
vehicle under numerous types of inclement operating
conditions. The vehicle operator initiates all wiper
and washer system functions with the multi-function
switch control stalk that extends from the left side of
the steering column, just below the steering wheel.
Rotating the knob on the end of the multi-function
switch control stalk selects the desired wiper system
operating mode. The wiper system allows the vehicle
operator to select from two continuous wiper speeds,
Hi or Lo, or one of several intermittent wipe Delay
mode intervals. Pushing the button on the end of the
control stalk downwards towards the steering column
8R - 2 WIPERS/WASHERSBR/BE
WIPERS/WASHERS (Continued)

the wiper blade with a new unit. Do not attempt to
repair a wiper blade that is damaged.
WASHER SYSTEM
The washer system components should be
inspected periodically, not just when washer perfor-
mance problems are experienced. This inspection
should include the following points:
(1) Check for ice or other foreign material in the
washer reservoir. If contaminated, clean and flush
the washer system. (Refer to 8 - ELECTRICAL/WIP-
ERS/WASHERS - CLEANING).
(2) Inspect the washer plumbing for pinched, leak-
ing, deteriorated, or incorrectly routed hoses and
damaged or disconnected hose fittings. Replace dam-
aged or deteriorated hoses and hose fittings. Leaking
washer hoses can sometimes be repaired by cutting
the hose at the leak and splicing it back together
using an in-line connector fitting. Similarly, sections
of deteriorated hose can be cut out and replaced by
splicing in new sections of hose using in-line connec-
tor fittings. Whenever routing a washer hose or a
wire harness containing a washer hose, it must be
routed away from hot, sharp, or moving parts. Also,sharp bends that might pinch the washer hose must
be avoided.
WASHER FLUID LEVEL
SWITCH
DESCRIPTION
The washer fluid level switch is a single pole, sin-
gle throw reed-type switch mounted on the rear of
the washer reservoir above the washer pump/motor,
in the left front corner of the engine compartment.
Only the molded plastic switch mounting flange and
connector receptacle are visible when the switch is
installed in the reservoir. A short nipple formation
extends from the inner surface of the switch mount-
ing flange, and a barb on the nipple near the switch
mounting flange is press-fit into a rubber grommet
seal installed in the mounting hole of the reservoir. A
small plastic float pivots on the end of a bracket that
extends from the switch nipple formation. Within the
float is a small magnet, which actuates the reed
switch. The washer fluid level switch cannot be
adjusted or repaired. If faulty or damaged, the switch
must be replaced.
OPERATION
The washer fluid level switch uses a pivoting,
oblong float to monitor the level of the washer fluid
in the washer reservoir. The float contains a small
magnet. When the float pivots, the changing proxim-
ity of its magnetic field will cause the contacts of the
small, stationary reed switch to open or close. When
the fluid level in the washer reservoir is at or above
the float level, the float moves to a vertical position
and the switch contacts open. When the fluid level in
the washer reservoir falls below the pivoting float,
the float moves to a horizontal position and the
switch contacts close. The switch contacts are con-
nected in series between ground and the washer fluid
switch sense input of the instrument cluster. The
switch is connected to the vehicle electrical system
through a dedicated take out and connector of the
headlamp and dash wire harness. The switch
receives ground through another take out of the
headlamp and dash wire harness with a single eyelet
terminal connector that is secured under a nut to a
ground stud located on the front extension of the left
front wheel housing in the engine compartment. The
washer fluid level switch can be diagnosed using con-
ventional diagnostic tools and methods. (Refer to 8 -
ELECTRICAL/INSTRUMENT CLUSTER/WASHER
FLUID INDICATOR - DIAGNOSIS AND TESTING).Fig. 1 Wiper Blade Inspection
1 - WORN OR UNEVEN EDGES
2 - ROAD FILM OR FOREIGN MATERIAL DEPOSITS
3 - HARD, BRITTLE, OR CRACKED
4 - DEFORMED OR FATIGUED
5 - SPLIT
6 - DAMAGED SUPPORT COMPONENTS
BR/BEWIPERS/WASHERS 8R - 7
WIPERS/WASHERS (Continued)

be routed away from hot, sharp, or moving parts;
and, sharp bends that might pinch the hose must be
avoided.
WASHER NOZZLE
DESCRIPTION
The two washer nozzles have integral snap fea-
tures that secure them in dedicated holes in the cowl
plenum cover/grille panel located near the base of the
windshield. The domed upper surface of the washer
nozzle is visible on the top of the plenum cover/grille
panel, and the nozzle orifice is oriented towards the
windshield glass. The washer plumbing fittings for
the washer nozzles are concealed beneath the cowl
plenum cover/grille panel. These fluidic washer noz-
zles are constructed of molded plastic. The cowl ple-
num cover/grille panel must be removed from the
vehicle to access the nozzles for service. The washer
nozzles cannot be adjusted or repaired and, if faulty
or damaged, they must be replaced.
OPERATION
The two washer nozzles are designed to dispense
washer fluid into the wiper pattern area on the out-
side of the windshield glass. Pressurized washer fluid
is fed to each nozzle from the washer reservoir by the
washer pump/motor through rubber hoses, which are
attached to a barbed nipple on each washer nozzle
below the cowl plenum cover/grille panel. The washer
nozzles incorporate a fluidic design, which causes the
nozzle to emit the pressurized washer fluid as an
oscillating stream to more effectively cover a larger
area of the glass area to be cleaned.
REMOVAL
(1) Remove the cowl plenum cover/grille panel
from the cowl top. (Refer to 23 - BODY/EXTERIOR/
COWL GRILLE - REMOVAL).
(2) From the underside of the cowl plenum cover/
grille panel, disconnect the washer hose from the
nozzle fitting.
(3) From the underside of the cowl plenum cover/
grille panel, compress the snap features of the
washer nozzle and push the nozzle out through the
top of the panel.
INSTALLATION
(1) From the top of the cowl plenum cover/grille
panel, insert the barbed nipple of the washer nozzle
through the nozzle mounting hole.
(2) With the orifice of the washer nozzle oriented
toward the windshield, use hand pressure to push
the nozzle into the mounting hole until the snap fea-tures of the nozzle are fully engaged with the under-
side of the cowl plenum cover/grille panel.
(3) From the underside of the cowl plenum cover/
grille panel, reconnect the washer hose to the washer
nozzle fitting.
(4) Reinstall the cowl plenum cover/grille panel
onto the cowl top. (Refer to 23 - BODY/EXTERIOR/
COWL GRILLE - INSTALLATION).
WASHER PUMP/MOTOR
DESCRIPTION
The washer pump/motor unit is located on the rear
of the washer reservoir, near the bottom in the left
front corner of the engine compartment. A small per-
manently lubricated and sealed electric motor is cou-
pled to the rotor-type washer pump. A seal flange
with a large barbed inlet nipple on the pump housing
passes through a rubber grommet seal installed in
the dedicated mounting hole near the bottom of the
washer reservoir. A smaller barbed outlet nipple on
the pump housing connects the unit to the washer
hose. The washer pump/motor unit is retained on the
reservoir by the interference fit between the barbed
pump inlet nipple and the grommet seal, which is a
light press fit. An integral electrical connector recep-
tacle is located on the motor housing. The washer
pump/motor unit cannot be repaired. If faulty or
damaged, the entire washer pump/motor unit must
be replaced.
OPERATION
The washer pump/motor unit is connected to the
vehicle electrical system through a single take out
and two-cavity connector of the headlamp and dash
wire harness. The washer pump/motor is grounded at
all times through a take out of the headlamp and
dash wire harness with a single eyelet terminal con-
nector that is secured by a nut to a ground stud
located on the forward extension of the left front
fender wheel housing in the engine compartment.
The washer pump/motor receives battery current on
a fused ignition switch output (run-acc) circuit
through the closed contacts of the momentary washer
switch within the multi-function switch only when
the washer button on the end of the switch control
stalk is depressed towards the steering column.
Washer fluid is gravity-fed from the washer reservoir
to the inlet side of the washer pump. When the pump
motor is energized, the rotor-type pump pressurizes
the washer fluid and forces it through the pump out-
let nipple, the washer plumbing, and the washer noz-
zles onto the windshield glass.
BR/BEWIPERS/WASHERS 8R - 9
WASHER HOSES/TUBES (Continued)

REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Disconnect the headlamp and dash wire har-
ness connector for the washer pump/motor from the
motor connector receptacle (Fig. 3).
(3) Disconnect the washer hose from the barbed
outlet nipple of the washer pump/motor and allow
the washer fluid to drain into a clean container for
reuse.
(4) Using a trim stick or another suitable wide
flat-bladed tool, gently pry the barbed inlet nipple of
the washer pump out of the rubber grommet seal in
the reservoir. Care must be taken not to damage the
reservoir.
(5) Remove the rubber grommet seal from the
washer pump mounting hole in the washer reservoir
and discard.
INSTALLATION
(1) Install a new rubber grommet seal into the
washer pump mounting hole in the washer reservoir.
Always use a new rubber grommet seal on the reser-
voir.
(2) Position the barbed inlet nipple of the washer
pump to the rubber grommet seal in the reservoir.
(3) Press firmly and evenly on the washer pump
until the barbed inlet nipple is fully seated in the
rubber grommet seal in the washer reservoir mount-
ing hole.
(4) Reconnect the washer hose to the barbed outlet
nipple of the washer pump.(5) Reconnect the headlamp and dash wire harness
connector for the washer pump/motor unit to the
motor connector receptacle (Fig. 3).
(6) Refill the washer reservoir with the washer
fluid drained from the reservoir during the removal
procedure.
(7) Reconnect the battery negative cable.
WASHER RESERVOIR
DESCRIPTION
The molded plastic washer fluid reservoir is
secured with integral mounting tabs to keyed slots
on the left side of the radiator fan shroud in the left
front corner of the engine compartment. A bright yel-
low plastic filler cap with a rubber seal and an Inter-
national Control and Display Symbol icon for
ªWindshield Washerº and the text ªWasher Fluid
Onlyº molded into it snaps over the open end of the
filler neck. A bail strap that is integral to the cap
secures the cap to the reservoir filler neck when it is
removed for inspecting or adjusting the fluid level in
the reservoir. There are separate, dedicated holes on
the rear side of the reservoir provided for the mount-
ing of the washer/pump motor unit and the washer
fluid level switch.
The washer reservoir cannot be repaired and, if
faulty or damaged, it must be replaced. The washer
reservoir, the grommet seals for the washer pump/
motor unit and the washer fluid level switch, and the
filler cap are each available for service replacement.
OPERATION
The washer fluid reservoir provides a secure,
on-vehicle storage location for a large reserve of
washer fluid for operation of the washer system. The
washer reservoir filler neck provides a clearly
marked and readily accessible point from which to
add washer fluid to the reservoir. The washer/pump
motor unit is located in a sump area near the bottom
of the reservoir to be certain that washer fluid will
be available to the pump as the fluid level in the res-
ervoir becomes depleted. The washer fluid level
switch is mounted just above the sump area of the
reservoir so that there will be adequate warning to
the vehicle operator that the washer fluid level is
low, before the washer system will no longer operate.
REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Drain the engine cooling system. (Refer to 7 -
COOLING - STANDARD PROCEDURE - DRAIN/
ALL EXCEPT DIESEL ENGINE) or (Refer to 7 -
Fig. 3 Washer Reservoir
1 - FAN SHROUD
2 - LOW WASHER FLUID SENSOR
3 - WASHER PUMP
4 - WASHER RESERVOIR
8R - 10 WIPERS/WASHERSBR/BE
WASHER PUMP/MOTOR (Continued)

COOLING - STANDARD PROCEDURE - DRAIN/
DIESEL ENGINE).
(3) Disconnect the upper radiator hose from the
radiator.
(4) Disconnect the headlamp and dash wire har-
ness connector for the washer fluid level switch from
the switch connector receptacle.
(5) Disconnect the headlamp and dash wire har-
ness connector for the washer pump/motor unit from
the motor connector receptacle.
(6) Disconnect the washer hose from the barbed
outlet nipple of the washer pump/motor and allow
the washer fluid to drain into a clean container for
reuse.
(7) While pulling the washer reservoir away from
the fan shroud, lift the reservoir upwards far enough
to disengage the reservoir mounting tabs from the
keyed upper and lower mounting slots in the fan
shroud (Fig. 4).
(8) Remove the washer reservoir from the engine
compartment.
INSTALLATION
(1) Position the washer reservoir into the engine
compartment (Fig. 4).
(2) Align and insert the upper and lower washer
reservoir mounting tabs into the keyed upper and
lower mounting slots in the radiator fan shroud.
When all the tabs are inserted, use hand pressure to
push the reservoir downwards far enough to engage
the mounting tabs in the keyways of the mounting
slots.(3) Reconnect the washer hose to the barbed outlet
nipple of the washer pump.
(4) Reconnect the headlamp and dash wire harness
connector for the washer pump/motor unit to the
motor connector receptacle.
(5) Reconnect the headlamp and dash wire harness
connector for the washer fluid level switch to the
switch connector receptacle.
(6) Reconnect the upper radiator hose to the radi-
ator.
(7) Refill the engine cooling system. (Refer to 7 -
COOLING - STANDARD PROCEDURE - REFILL/
ALL EXCEPT DIESEL ENGINE) or (Refer to 7 -
COOLING - STANDARD PROCEDURE - REFILL/
DIESEL ENGINE).
(8) Refill the washer reservoir with the washer
fluid drained from the reservoir during the removal
procedure.
(9) Reconnect the battery negative cable.
WIPER ARM
DESCRIPTION
The wiper arms are the rigid members located
between the wiper pivots that protrude from the cowl
plenum cover/grille panel near the base of the wind-
shield and the wiper blades on the windshield glass.
The wiper arm has a die cast metal pivot end. On the
underside of this pivot end is a socket formation with
internal serrations and a small, movable, stamped
steel latch plate that is secured loosely under a small
strap that is staked to the pivot end. The wide end of
a tapered, stamped steel channel hinges on and is
secured with a hinge pin to the pivot end of the
wiper arm. One end of a long, rigid, stamped steel
strap, with a small hole near its pivot end, is riveted
and crimped within the narrow end of the stamped
steel channel. The tip of the wiper blade end of this
strap is bent back under itself to form a small hook.
Concealed within the stamped steel channel, one end
of a long spring is hooked through a hole in a small
stamped steel strap on the hinge pin within the die
cast pivot end, while the other end of the spring is
hooked through the small hole in the steel strap. The
entire wiper arm has a satin black finish applied to
all of its visible surfaces.
A wiper arm cannot be adjusted or repaired. If
damaged or faulty, the entire wiper arm unit must be
replaced.
OPERATION
The wiper arms are designed to mechanically
transmit the motion from the wiper pivots to the
wiper blades. The wiper arm must be properly
indexed to the wiper pivot in order to maintain the
Fig. 4 Washer Reservoir
1 - FAN SHROUD
2 - WASHER FLUID LEVEL SWITCH
3 - WASHER PUMP
4 - WASHER RESERVOIR
BR/BEWIPERS/WASHERS 8R - 11
WASHER RESERVOIR (Continued)

proper wiper blade travel on the glass. The socket
formation with internal serrations in the wiper arm
pivot end interlocks with the serrations on the outer
circumference of the wiper pivot driver, allowing pos-
itive engagement and finite adjustment of this con-
nection. The latch plate on the underside of the
wiper arm pivot end locks the wiper arm to the wiper
pivot when in its installed position and, when in its
unlocked position, also serves as a blocker to hold the
spring-loaded wiper arm off of the glass to facilitate
removal and installation. The spring-loaded wiper
arm hinge controls the down-force applied through
the tip of the wiper arm to the wiper blade on the
glass. The hook formation on the tip of the wiper arm
provides a cradle for securing and latching the wiper
blade pivot block to the wiper arm.
REMOVAL
(1) Unlatch and open the hood.
(2) Lift the wiper arm far enough to raise the
wiper blade off of the glass and permit the wiper arm
latch plate to be pulled out to its holding position,
then release the arm (Fig. 5). The wiper arm and
blade will remain off the glass with the latch in this
position.
CAUTION: The use of a screwdriver or other prying
tool to remove a wiper arm may distort it. This dis-
tortion could allow the arm to come off of the wiper
pivot during wiper operation, regardless of how
carefully it is reinstalled.
(3) Using a slight rocking motion, remove the
wiper arm pivot end from the wiper pivot.
INSTALLATION
NOTE: Be certain that the wiper motor is in the park
position before attempting to install the wiper arms.
Turn the ignition switch to the On position and
move the wiper control knob on the end of the
multi-function switch control stalk to its Off posi-
tion. If the wiper pivots move, wait until they stop
moving, then turn the ignition switch back to theOff position. The wiper motor is now in its park
position.
(1) The wiper arms must be indexed to the wiper
pivots with the wiper motor in the park position to
be properly installed (Fig. 6). Position the wiper arm
pivot ends onto the wiper pivots so that the lower
edge of the wiper arm tip is on the upper edge of the
lower windshield blackout area   22 millimeters ( 
0.86 inches).
(2) Once the wiper arm is indexed to the wiper
pivot, lift the wiper arm away from the windshield
slightly to relieve the spring tension on the latch
plate, then push the latch plate into the locked posi-
tion. Gently lower the wiper arm until the wiper
blade rests on the glass.
(3) Wet the windshield glass, then operate the wip-
ers. Turn the wiper control knob on the end of the
multi-function switch control stalk to the Off posi-
tion, then check for the correct wiper arm position
and adjust as required.
WIPER BLADE
DESCRIPTION
Each wiper blade is secured by an integral latching
pivot block to the hook formation on the tip of the
wiper arms, and rests on the glass near the base of
the windshield when the wipers are not in operation.
The wiper blade consists of the following components:
²Superstructure- The superstructure includes
several stamped steel bridges and links with claw
formations that grip the wiper blade element. Also
included in this unit is the latching, molded plastic
pivot block that secures the superstructure to the
wiper arm. All of the metal components of the wiper
blade have a satin black finish applied.
²Element- The wiper element or squeegee is the
resilient rubber member of the wiper blade that con-
tacts the glass.
²Flexor- The flexor is a rigid metal component
running along the length of each side of the wiper
element where it is gripped by the claws of the
superstructure.Fig. 5 Wiper Arm Remove/Install - Typical
Fig. 6 Wiper Arm Installation
8R - 12 WIPERS/WASHERSBR/BE
WIPER ARM (Continued)