Steering box DODGE RAM 1500 1998 2.G User Guide

Airbag Control Module (ACM). An airbag indicator in
the ElectroMechanical Instrument Cluster (EMIC)
illuminates for about six seconds as a bulb test each
time the ignition switch is turned to the On or Start
positions. Following the bulb test, the airbag indica-
tor is turned on or off by the ACM to indicate the
status of the supplemental restraint system. If the
airbag indicator comes on at any time other than
during the bulb test, it indicates that there is a prob-
lem in the supplemental restraint system electrical
circuits. Such a problem may cause airbags not to
deploy when required, or to deploy when not
required.
Deployment of the supplemental restraints
depends upon the angle and severity of an impact.
Deployment is not based upon vehicle speed; rather,
deployment is based upon the rate of deceleration as
measured by the forces of gravity (G force) upon the
impact sensors. When an impact is severe enough,
the microprocessor in the ACM signals the inflator of
the appropriate airbag units to deploy their airbag
cushions. The outboard front seat belt tensioners are
provided with a deployment signal by the ACM in
conjunction with the driver and passenger front air-
bags. During a frontal vehicle impact, the knee block-
ers work in concert with properly fastened and
adjusted seat belts to restrain both the driver and
the front seat passenger in the proper position for an
airbag deployment. The knee blockers also absorb
and distribute the crash energy from the driver and
the front seat passenger to the structure of the
instrument panel. The seat belt tensioner removes
the slack from the outboard front seat belts to pro-
vide further assurance that the driver and front seat
passenger are properly positioned and restrained for
an airbag deployment.
Typically, the vehicle occupants recall more about
the events preceding and following a collision than
they do of an airbag deployment itself. This is
because the airbag deployment and deflation occur
very rapidly. In a typical 48 kilometer-per-hour (30
mile-per-hour) barrier impact, from the moment of
impact until the airbags are fully inflated takes
about 40 milliseconds. Within one to two seconds
from the moment of impact, the airbags are almost
entirely deflated. The times cited for these events are
approximations, which apply only to a barrier impact
at the given speed. Actual times will vary somewhat,
depending upon the vehicle speed, impact angle,
severity of the impact, and the type of collision.
When the ACM monitors a problem in any of the
supplemental restraint system circuits or compo-
nents, including the seat belt tensioners, it stores a
fault code or Diagnostic Trouble Code (DTC) in its
memory circuit and sends an electronic message to
the EMIC to turn on the airbag indicator. Propertesting of the supplemental restraint system compo-
nents, the Programmable Communications Interface
(PCI) data bus, the electronic message inputs to and
outputs from the EMIC or the ACM, as well as the
retrieval or erasure of a DTC from the ACM or EMIC
requires the use of a DRBIIItscan tool. Refer to the
appropriate diagnostic information.
See the owner's manual in the vehicle glove box for
more information on the features, use and operation
of all of the factory-installed passive restraints.
WARNING
WARNINGS - RESTRAINT SYSTEM
WARNING: TO AVOID PERSONAL INJURY OR
DEATH, DURING AND FOLLOWING ANY SEAT BELT
OR CHILD RESTRAINT ANCHOR SERVICE, CARE-
FULLY INSPECT ALL SEAT BELTS, BUCKLES,
MOUNTING HARDWARE, RETRACTORS, TETHER
STRAPS, AND ANCHORS FOR PROPER INSTALLA-
TION, OPERATION, OR DAMAGE. REPLACE ANY
BELT THAT IS CUT, FRAYED, OR TORN.
STRAIGHTEN ANY BELT THAT IS TWISTED.
TIGHTEN ANY LOOSE FASTENERS. REPLACE ANY
BELT THAT HAS A DAMAGED OR INOPERATIVE
BUCKLE OR RETRACTOR. REPLACE ANY BELT
THAT HAS A BENT OR DAMAGED LATCH PLATE
OR ANCHOR PLATE. REPLACE ANY CHILD
RESTRAINT ANCHOR OR THE UNIT TO WHICH THE
ANCHOR IS INTEGRAL THAT HAS BEEN BENT OR
DAMAGED. NEVER ATTEMPT TO REPAIR A SEAT
BELT OR CHILD RESTRAINT COMPONENT.
ALWAYS REPLACE DAMAGED OR FAULTY SEAT
BELT AND CHILD RESTRAINT COMPONENTS WITH
THE CORRECT, NEW AND UNUSED REPLACEMENT
PARTS LISTED IN THE DAIMLERCHRYSLER MOPAR
PARTS CATALOG.
WARNING: TO AVOID PERSONAL INJURY OR
DEATH, ON VEHICLES EQUIPPED WITH AIRBAGS,
DISABLE THE SUPPLEMENTAL RESTRAINT SYS-
TEM BEFORE ATTEMPTING ANY STEERING
WHEEL, STEERING COLUMN, AIRBAG, SEAT BELT
TENSIONER, IMPACT SENSOR, OR INSTRUMENT
PANEL COMPONENT DIAGNOSIS OR SERVICE.
DISCONNECT AND ISOLATE THE BATTERY NEGA-
TIVE (GROUND) CABLE, THEN WAIT TWO MINUTES
FOR THE SYSTEM CAPACITOR TO DISCHARGE
BEFORE PERFORMING FURTHER DIAGNOSIS OR
SERVICE. THIS IS THE ONLY SURE WAY TO DIS-
ABLE THE SUPPLEMENTAL RESTRAINT SYSTEM.
FAILURE TO TAKE THE PROPER PRECAUTIONS
COULD RESULT IN ACCIDENTAL AIRBAG DEPLOY-
MENT.
DRRESTRAINTS 8O - 5
RESTRAINTS (Continued)

OPERATION
The multistage passenger airbag is deployed by
electrical signals generated by the Airbag Control
Module (ACM) through the passenger airbag squib 1
and squib 2 circuits to the two initiators in the air-
bag inflator. By using two initiators, the airbag can
be deployed at multiple levels of force. The force level
is controlled by the ACM to suit the monitored
impact conditions by providing one of four delay
intervals between the electrical signals provided to
the two initiators. The longer the delay between
these signals, the less forcefully the airbag will
deploy.
When the ACM sends the proper electrical signals to
each initiator, the electrical energy generates enough
heat to initiate a small pyrotechnic charge which, in
turn ignites chemical pellets within the inflator. Once
ignited, these chemical pellets burn rapidly and pro-
duce a large quantity of inert gas. The inflator is
sealed to the airbag cushion and a diffuser in the infla-
tor directs all of the inert gas into the airbag cushion,
causing the cushion to inflate. As the cushion inflates,
the passenger airbag door will split at predetermined
tear seam lines concealed on the inside surface of the
door, then the door will pivot up over the top of the
instrument panel and out of the way. Following an air-
bag deployment, the airbag cushion quickly deflates by
venting the inert gas through vent holes within the
fabric used to construct the back (instrument panel
side) of the airbag cushion.
Typically, both initiators are used during an airbag
deployment event. However, it is possible for only one
initiator to be used during a deployment due to an
airbag system fault; therefore, it is necessary to
always confirm that both initiators have been used in
order to avoid the improper disposal of potentially
live pyrotechnic materials. (Refer to 8 - ELECTRI-
CAL/RESTRAINTS - STANDARD PROCEDURE -
SERVICE AFTER A SUPPLEMENTAL RESTRAINT
DEPLOYMENT).
REMOVAL
The following procedure is for replacement of a
faulty or damaged passenger airbag. If the airbag is
faulty or damaged, but not deployed, review the rec-
ommended procedures for handling non-deployed
supplemental restraints. (Refer to 8 - ELECTRICAL/
RESTRAINTS - STANDARD PROCEDURE - HAN-
DLING NON-DEPLOYED SUPPLEMENTAL
RESTRAINTS). If the passenger airbag has been
deployed, review the recommended procedures for
service after a supplemental restraint deployment
before removing the airbag from the vehicle. (Refer to
8 - ELECTRICAL/RESTRAINTS - STANDARD PRO-
CEDURE - SERVICE AFTER A SUPPLEMENTAL
RESTRAINT DEPLOYMENT).WARNING: TO AVOID PERSONAL INJURY OR
DEATH, ON VEHICLES EQUIPPED WITH AIRBAGS,
DISABLE THE SUPPLEMENTAL RESTRAINT SYS-
TEM BEFORE ATTEMPTING ANY STEERING
WHEEL, STEERING COLUMN, AIRBAG, SEAT BELT
TENSIONER, IMPACT SENSOR, OR INSTRUMENT
PANEL COMPONENT DIAGNOSIS OR SERVICE.
DISCONNECT AND ISOLATE THE BATTERY NEGA-
TIVE (GROUND) CABLE, THEN WAIT TWO MINUTES
FOR THE SYSTEM CAPACITOR TO DISCHARGE
BEFORE PERFORMING FURTHER DIAGNOSIS OR
SERVICE. THIS IS THE ONLY SURE WAY TO DIS-
ABLE THE SUPPLEMENTAL RESTRAINT SYSTEM.
FAILURE TO TAKE THE PROPER PRECAUTIONS
COULD RESULT IN ACCIDENTAL AIRBAG DEPLOY-
MENT.
WARNING: TO AVOID PERSONAL INJURY OR
DEATH, WHEN REMOVING A DEPLOYED AIRBAG,
RUBBER GLOVES, EYE PROTECTION, AND A
LONG-SLEEVED SHIRT SHOULD BE WORN. THERE
MAY BE DEPOSITS ON THE AIRBAG UNIT AND
OTHER INTERIOR SURFACES. IN LARGE DOSES,
THESE DEPOSITS MAY CAUSE IRRITATION TO THE
SKIN AND EYES.
(1) Disconnect and isolate the battery negative
cable. Wait two minutes for the system capacitor to
discharge before further service.
(2) Remove the lower surround from the instru-
ment panel. (Refer to 23 - BODY/INSTRUMENT
PANEL/LOWER SURROUND - REMOVAL).
(3) Remove the screw that secures the mounting
tab of the panel outlet housing to the upper glove box
opening reinforcement (Fig. 36).
(4) Remove the six screws that secure the inboard
and lower flanges of the passenger airbag door to the
instrument panel.
Fig. 36 Passenger Airbag Door Screws
1 - PASSENGER AIRBAG DOOR
2 - PANEL OUTLET SCREW (1)
3 - GLOVE BOX OPENING UPPER REINFORCEMENT
4 - DOOR SCREW (6)
8O - 40 RESTRAINTSDR
PASSENGER AIRBAG (Continued)

(5) Reach through and above the glove box opening
to access and remove the two screws that secure the
passenger airbag rear brackets to the upper glove
box opening reinforcement (Fig. 37).
(6) Reach through and above the glove box opening
to access and remove the two screws that secure the
passenger airbag front brackets to the instrument
panel structural support.
(7) Using a trim stick or another suitable wide
flat-bladed tool, gently pry the upper and outboard
edges of the passenger airbag door away from the
instrument panel far enough to disengage the seven
snap features on the door from the receptacles in the
instrument panel base trim (Fig. 38).
(8) Pull the passenger airbag housing and door
unit straight back from the instrument panel far
enough to access the instrument panel wire harness
take out and connector for the airbag located on the
inboard side of the airbag housing.(9) Disconnect the passenger airbag pigtail wire
connector from the instrument panel wire harness
connector for the airbag. To disconnect the connector:
(a) Slide the red Connector Position Assurance
(CPA) lock on the connector toward the side of the
connector.
(b) Depress the connector latch tab and pull the
two halves of the connector straight away from
each other.
(10) Remove the passenger airbag and airbag door
from the instrument panel as a unit.
INSTALLATION
The following procedure is for replacement of a
faulty or damaged passenger airbag. If the airbag is
faulty or damaged, but not deployed, review the rec-
ommended procedures for handling non-deployed
supplemental restraints. (Refer to 8 - ELECTRICAL/
RESTRAINTS - STANDARD PROCEDURE - HAN-
DLING NON-DEPLOYED SUPPLEMENTAL
RESTRAINTS). If the passenger airbag has been
deployed, review the recommended procedures for
service after a supplemental restraint deployment
before removing the airbag from the vehicle. (Refer to
8 - ELECTRICAL/RESTRAINTS - STANDARD PRO-
CEDURE - SERVICE AFTER A SUPPLEMENTAL
RESTRAINT DEPLOYMENT).
WARNING: TO AVOID PERSONAL INJURY OR
DEATH, ON VEHICLES EQUIPPED WITH AIRBAGS,
DISABLE THE SUPPLEMENTAL RESTRAINT SYS-
TEM BEFORE ATTEMPTING ANY STEERING
WHEEL, STEERING COLUMN, AIRBAG, SEAT BELT
TENSIONER, IMPACT SENSOR, OR INSTRUMENT
PANEL COMPONENT DIAGNOSIS OR SERVICE.
DISCONNECT AND ISOLATE THE BATTERY NEGA-
TIVE (GROUND) CABLE, THEN WAIT TWO MINUTES
FOR THE SYSTEM CAPACITOR TO DISCHARGE
BEFORE PERFORMING FURTHER DIAGNOSIS OR
SERVICE. THIS IS THE ONLY SURE WAY TO DIS-
ABLE THE SUPPLEMENTAL RESTRAINT SYSTEM.
FAILURE TO TAKE THE PROPER PRECAUTIONS
COULD RESULT IN ACCIDENTAL AIRBAG DEPLOY-
MENT.
WARNING: TO AVOID PERSONAL INJURY OR
DEATH, WHEN REMOVING A DEPLOYED AIRBAG,
RUBBER GLOVES, EYE PROTECTION, AND A
LONG-SLEEVED SHIRT SHOULD BE WORN. THERE
MAY BE DEPOSITS ON THE AIRBAG UNIT AND
OTHER INTERIOR SURFACES. IN LARGE DOSES,
THESE DEPOSITS MAY CAUSE IRRITATION TO THE
SKIN AND EYES.
Fig. 37 Passenger Airbag Remove/Install
1 - PASSENGER AIRBAG DOOR
2 - UPPER GLOVE BOX OPENING REINFORCEMENT
3 - FRONT BRACKET SCREW (2)
4 - REAR BRACKET SCREW (2)
Fig. 38 Passenger Airbag Door Disengage
1 - TRIM STICK
2 - PASSENGER AIRBAG DOOR
3 - INSTRUMENT PANEL
DRRESTRAINTS 8O - 41
PASSENGER AIRBAG (Continued)

The passenger airbag on/off switch housing is con-
structed of molded plastic and has three integral
mounting tabs. These mounting tabs are used to
secure the switch to the back of the molded plastic
switch face plate with three small screws. The
molded plastic face plate also has three integral
mounting tabs that are used to secure the switch and
face plate unit to the instrument panel center bezel
with three additional screws. A molded plastic con-
nector receptacle on the back of the switch housing
connects the switch to the vehicle electrical system
through a dedicated take out and connector of the
instrument panel wire harness. The molded plastic
harness connector insulator is keyed and latched to
ensure proper and secure switch electrical connec-
tions. The passenger airbag on/off switch cannot be
adjusted or repaired and, if faulty or damaged, the
switch must be replaced.
OPERATION
The passenger airbag on/off switch allows the cus-
tomer to turn the passenger airbag function On or
Off to accommodate certain uses of the right front
seating position where airbag protection may not be
desired. See the owner's manual in the vehicle glove
box for specific recommendations on when to enable
or disable the passenger airbag. The Off indicator of
the switch will be illuminated whenever the switch is
turned to the Off position and the ignition switch is
in the On position.
The ignition key is the only key or object that
should ever be inserted into the key cylinder actuator
of the switch. The on/off switch requires only a par-
tial key insertion to fully depress a spring-loaded
locking plunger. The spring-loaded locking plunger
prevents the user from leaving the key in the switch.
The key will be automatically ejected when force is
not applied. To actuate the passenger airbag on/off
switch, insert the ignition key into the switch key
actuator far enough to fully depress the plunger, then
rotate the actuator to the desired switch position.
When the switch key actuator is rotated to its clock-
wise stop (the key actuator slot will be aligned with
the Off indicator), the Off indicator is illuminated
and the passenger airbag is disabled. When the
switch is rotated to its counterclockwise stop (the key
actuator slot will be in a vertical position), the Off
indicator will be extinguished and the passenger air-
bag is enabled.The passenger airbag on/off switch connects one of
two internal resistors in series between the passen-
ger airbag mux switch sense and passenger airbag
mux switch return circuits of the Airbag Control
Module (ACM). The ACM continually monitors the
resistance in these circuits to determine the switch
position that has been selected. When the switch is
in the Off position, the ACM provides a ground input
to the switch through the passenger airbag indicator
driver circuit, which energizes the Light-Emitting
Diode (LED) that illuminates the Off indicator of the
switch.
The ACM will also illuminate the Off indicator of
the switch for about seven seconds each time the
ignition switch is turned to the On position as a bulb
test. The ACM will store a Diagnostic Trouble Code
(DTC) for any fault it detects in the passenger airbag
on/off switch or Off indicator circuits, and will illumi-
nate the airbag indicator in the instrument cluster if
a fault is detected. For proper diagnosis of the pas-
senger airbag on/off switch or the ACM, a DRBIIIt
scan tool is required. Refer to the appropriate diag-
nostic information.
REMOVAL
WARNING: TO AVOID PERSONAL INJURY OR
DEATH, ON VEHICLES EQUIPPED WITH AIRBAGS,
DISABLE THE SUPPLEMENTAL RESTRAINT SYS-
TEM BEFORE ATTEMPTING ANY STEERING
WHEEL, STEERING COLUMN, AIRBAG, SEAT BELT
TENSIONER, IMPACT SENSOR, OR INSTRUMENT
PANEL COMPONENT DIAGNOSIS OR SERVICE.
DISCONNECT AND ISOLATE THE BATTERY NEGA-
TIVE (GROUND) CABLE, THEN WAIT TWO MINUTES
FOR THE SYSTEM CAPACITOR TO DISCHARGE
BEFORE PERFORMING FURTHER DIAGNOSIS OR
SERVICE. THIS IS THE ONLY SURE WAY TO DIS-
ABLE THE SUPPLEMENTAL RESTRAINT SYSTEM.
FAILURE TO TAKE THE PROPER PRECAUTIONS
COULD RESULT IN ACCIDENTAL AIRBAG DEPLOY-
MENT.
(1) Disconnect and isolate the battery negative
cable. Wait two minutes for the system capacitor to
discharge before further service.
(2) Remove the center bezel from the instrument
panel. (Refer to 23 - BODY/INSTRUMENT PANEL/
INSTRUMENT PANEL CENTER BEZEL -
REMOVAL).
(3) From the back of the center bezel, remove the
three screws that secure the passenger airbag on/off
switch and face plate unit to the back of the bezel
(Fig. 40).
(4) Remove the passenger airbag on/off switch and
face plate from the center bezel as a unit.
DRRESTRAINTS 8O - 43
PASSENGER AIRBAG ON/OFF SWITCH (Continued)

8W-15 GROUND DISTRIBUTION
Component Page
A/C Compressor Clutch................ 8W-15-5, 8
A/C-Heater Control.................. 8W-15-9, 12
Adjustable Pedal Switch................ 8W-15-12
Airbag Control Module................. 8W-15-15
Amplifier Audio...................... 8W-15-11
Ashtray Lamp....................... 8W-15-11
Automatic Day/Night Mirror.............. 8W-15-9
Auxiliary Battery...................... 8W-15-7
Battery............................. 8W-15-7
Brake Lamp Switch.................... 8W-15-9
Brake Transmission Shift Interlock Solenoid . . 8W-15-14
Center High Mounted Stop Lamp/Cargo Lamp . 8W-15-14
Cigar Lighter Outlet................... 8W-15-12
Clearance Lamp No. 1.................. 8W-15-13
Clearance Lamp No. 2.................. 8W-15-13
Clearance Lamp No. 3.................. 8W-15-13
Clearance Lamp No. 4.................. 8W-15-13
Clearance Lamp No. 5.................. 8W-15-13
Clockspring......................... 8W-15-10
Clutch Interlock Brake Switch............. 8W-15-3
Compass/Mini-Trip Computer.............. 8W-15-9
Condenser Fan........................ 8W-15-4
Cylinder Lock Switch-Driver............. 8W-15-17
Data Link Connector.................... 8W-15-9
Data Link Connector-Engine.............. 8W-15-8
Dome Lamp......................... 8W-15-14
Door Ajar Switch-Driver................ 8W-15-17
Door Ajar Switch-Left Rear.............. 8W-15-16
Door Ajar Switch-Passenger.............. 8W-15-17
Door Ajar Switch-Right Rear............. 8W-15-16
Door Lock Motor/Ajar Switch-Driver........ 8W-15-17
Door Lock Motor/Ajar Switch-Left Rear...... 8W-15-16
Door Lock Motor/Ajar Switch-Passenger..... 8W-15-17
Door Lock Motor/Ajar Switch-Right Rear..... 8W-15-16
Door Lock Switch-Passenger.............. 8W-15-17
Driver Door Module................... 8W-15-18
EGR Solenoid......................... 8W-15-5
Electric Brake Provision................. 8W-15-4
Engine Control Module.................. 8W-15-8
Fender Lamp-Front Left................. 8W-15-2
Fender Lamp-Front Right................ 8W-15-2
Fender Lamp-Rear Left.................. 8W-15-2
Fender Lamp-Rear Right................. 8W-15-2
Fog Lamp-Left........................ 8W-15-3
Fog Lamp-Right....................... 8W-15-3
Fuel Heater.......................... 8W-15-8
Fuel Pump Module..................... 8W-15-4
G100............................... 8W-15-7
G101............................... 8W-15-7
G102............................... 8W-15-7
G104.......................... 8W-15-3, 4, 15
G105............................... 8W-15-7
G107............................. 8W-15-5, 6
G108............................... 8W-15-7
G109............................... 8W-15-7
G114............................... 8W-15-8
G120............................... 8W-15-8
G201............................ 8W-15-9, 10Component Page
G202......................... 8W-15-11, 12, 14
G204.............................. 8W-15-15
G301.............................. 8W-15-16
G302.............................. 8W-15-18
Generator.......................... 8W-15-6, 8
Glove Box Lamp And Switch............. 8W-15-12
Hands Free Module.................... 8W-15-11
Headlamp Switch..................... 8W-15-14
Headlamp-Left........................ 8W-15-3
Headlamp-Right....................... 8W-15-7
Heated Seat Cushion-Driver.............. 8W-15-18
Heated Seat Cushion-Passenger........... 8W-15-19
Heated Seat Switch-Driver............... 8W-15-12
Heated Seat Switch-Passenger............ 8W-15-12
Horn-High Note....................... 8W-15-4
Horn-Low Note........................ 8W-15-4
Ignition Switch....................... 8W-15-10
Instrument Cluster................. 8W-15-10, 14
Intake Air Heater Relay No. 1............. 8W-15-7
Intake Air Heater Relay No. 2............. 8W-15-7
Integrated Power Module............... 8W-15-3, 4
License Lamp-Left..................... 8W-15-2
License Lamp-Right.................... 8W-15-2
Lift Pump Motor....................... 8W-15-8
Natural Vacuum Leak Detection Assembly..... 8W-15-6
Overhead Map/Reading Lamp............ 8W-15-14
Oxygen Sensor 1/1 Upstream.............. 8W-15-6
Oxygen Sensor 1/2 Downstream............ 8W-15-6
Oxygen Sensor 2/1 Upstream.............. 8W-15-6
Oxygen Sensor 2/2 Downstream............ 8W-15-6
Park/Turn Signal Lamp-Left Front.......... 8W-15-4
Park/Turn Signal Lamp-Right Front......... 8W-15-7
Passenger Lumbar Switch............... 8W-15-19
Power Mirror-Left..................... 8W-15-18
Power Mirror-Right.................... 8W-15-18
Power Outlet........................ 8W-15-12
Power Outlet-Console................ 8W-15-15, 19
Power Seat Switch-Driver............... 8W-15-18
Power Seat Switch-Passenger............. 8W-15-19
Power Steering Pressure Switch............ 8W-15-5
Powertrain Control Module............. 8W-15-5, 6
Radio.............................. 8W-15-11
Seat Belt Switch-Driver................. 8W-15-16
Seat Heater Interface Module............. 8W-15-16
Sentry Key Immobilizer Module........... 8W-15-10
Speed Control Servo.................... 8W-15-3
Tail/Stop/Turn Signal Lamp-Left........... 8W-15-2
Tail/Stop/Turn Signal Lamp-Right.......... 8W-15-2
Tailgate Lamp........................ 8W-15-2
Tow/Haul Overdrive Switch............... 8W-15-9
Trailer Tow Connector................... 8W-15-4
Trailer Tow Connector-Add On............. 8W-15-4
Transfer Case Control Module............ 8W-15-15
Transfer Case Selector Switch........... 8W-15-4, 15
Vacuum Pump........................ 8W-15-7
Washer Fluid Level Switch.............. 8W-15-3, 7
Washer Pump Motor-Front............... 8W-15-7
Wiper Motor-Front..................... 8W-15-4
DR8W-15 GROUND DISTRIBUTION 8W - 15 - 1

Component Page
Fuel Pump Module.................. 8W-80-66
Fuel Pump Motor (Diesel)............ 8W-80-66
Generator......................... 8W-80-67
Glove Box Lamp And Switch.......... 8W-80-67
Hands Free Module (Telematics)....... 8W-80-67
Headlamp Switch................... 8W-80-68
Headlamp-Left..................... 8W-80-68
Headlamp-Right.................... 8W-80-68
Heated Seat Cushion-Driver........... 8W-80-68
Heated Seat Cushion-Passenger........ 8W-80-69
Heated Seat Switch-Driver............ 8W-80-69
Heated Seat Switch-Passenger......... 8W-80-69
Horn Switch....................... 8W-80-69
Horn-High Note.................... 8W-80-70
Horn-Low Note..................... 8W-80-70
Idle Air Control Motor (3.7L/4.7L)...... 8W-80-70
Ignition Switch..................... 8W-80-70
Inlet Air Temperature Sensor.......... 8W-80-71
Input Speed Sensor (45RFE).......... 8W-80-71
Instrument Cluster C1............... 8W-80-71
Instrument Cluster C2............... 8W-80-72
Instrument Cluster C3............... 8W-80-72
Intake Air Temperature Sensor (Gas).... 8W-80-73
Intake Air Temperature/Manifold Absolute
Pressure Sensor (Diesel)............ 8W-80-73
Integrated Power Module C1.......... 8W-80-73
Integrated Power Module C2.......... 8W-80-74
Integrated Power Module C3.......... 8W-80-74
Integrated Power Module C4.......... 8W-80-75
Integrated Power Module C5.......... 8W-80-75
Integrated Power Module C6.......... 8W-80-76
Integrated Power Module C7.......... 8W-80-76
Knock Sensor (3.7L)................. 8W-80-77
Knock Sensor-Left (5.7L)............. 8W-80-77
Knock Sensor-Right (5.7L)............ 8W-80-77
License Lamp-Left.................. 8W-80-77
License Lamp-Right................. 8W-80-77
Lift Pump Motor (Diesel)............. 8W-80-78
Line Pressure Sensor (NGC)........... 8W-80-78
Lumbar Motor-Driver................ 8W-80-78
Lumbar Motor-Passenger............. 8W-80-78
Manifold Absolute Pressure Sensor
(NGC).......................... 8W-80-79
Mode Door Actuator 1 (Panel To Floor) . . . 8W-80-79
Mode Door Actuator 2 (Defrost To Floor) . 8W-80-79
Multi-Function Switch............... 8W-80-79
Natural Vacuum Leak Detection Assembly
(NGC).......................... 8W-80-80
Output Speed Sensor (45RFE)......... 8W-80-80
Output Speed Sensor (47RE).......... 8W-80-80
Overhead Map/reading Lamp (Except
Base).......................... 8W-80-80
Oxygen Sensor 1/1 Upstream (NGC).... 8W-80-81
Oxygen Sensor 1/2 Downstream (NGC) . . 8W-80-81Component Page
Oxygen Sensor 2/1 Upstream (NGC).... 8W-80-81
Oxygen Sensor 2/2 Downstream (NGC) . . 8W-80-81
Park/Turn Signal Lamp-Left Front...... 8W-80-82
Park/Turn Signal Lamp-Right Front.... 8W-80-82
Passenger Blend Door Actuator (Dual-
Zone).......................... 8W-80-82
Passenger Lumbar Switch............ 8W-80-82
Power Mirror-Left................... 8W-80-82
Power Mirror-Right................. 8W-80-83
Power Outlet...................... 8W-80-83
Power Outlet-Console (Except Base)..... 8W-80-83
Power Seat Motor-Driver Front Vertical . . 8W-80-83
Power Seat Motor-Driver Horizontal.... 8W-80-84
Power Seat Motor-Driver Rear Vertical . . 8W-80-84
Power Seat Motor-Passenger Front
Vertical......................... 8W-80-84
Power Seat Motor-Passenger Horizontal . 8W-80-84
Power Seat Motor-Passenger Rear
Vertical......................... 8W-80-84
Power Seat Switch-Driver............ 8W-80-85
Power Seat Switch-Passenger.......... 8W-80-85
Power Steering Pressure Switch (NGC) . . 8W-80-85
Power Window Circuit Breaker........ 8W-80-86
Power Window Motor-Driver.......... 8W-80-86
Power Window Motor-Left Rear........ 8W-80-86
Power Window Motor-Passenger........ 8W-80-86
Power Window Motor-Right Rear....... 8W-80-87
Power Window Switch-Left Rear....... 8W-80-87
Power Window Switch-Passenger....... 8W-80-87
Power Window Switch-Right Rear...... 8W-80-87
Powertrain Control Module C1 (NGC) . . . 8W-80-88
Powertrain Control Module C2 (NGC) . . . 8W-80-89
Powertrain Control Module C3 (NGC) . . . 8W-80-90
Powertrain Control Module C4 (NGC) . . . 8W-80-91
Radio C1 (Except Infinity)............ 8W-80-92
Radio C1 (Infinity).................. 8W-80-92
Radio C2.......................... 8W-80-93
Recirculation Door Actuator........... 8W-80-93
Remote Radio Switch-Left............ 8W-80-93
Remote Radio Switch-Right........... 8W-80-93
Seat Belt Switch-Driver.............. 8W-80-94
Seat Belt Tensioner Reducer (Standard
Cab)........................... 8W-80-94
Seat Belt Tensioner-Driver............ 8W-80-94
Seat Belt Tensioner-Passenger......... 8W-80-94
Seat Heater Interface Module.......... 8W-80-94
Sentry Key Immobilizer Module (SKIM) . . 8W-80-95
Side Impact Sensor-Left.............. 8W-80-95
Side Impact Sensor-Right............. 8W-80-95
Speaker-Center Instrument Panel...... 8W-80-95
Speaker-Left Front Door.............. 8W-80-95
Speaker-Left Instrument Panel........ 8W-80-96
Speaker-Left Rear.................. 8W-80-96
Speaker-Right Front Door............ 8W-80-96
DR8W-80 CONNECTOR PIN-OUTS 8W - 80 - 3

CONNECTOR NAME/NUMBER COLOR LOCATION FIG.
Glove Box Lamp and Switch BK At Glove Box 35, 39
Governor Pressure Sensor BK Left Rear of Transmission N/S
Hands Free Module Right Instrument Panel 39
Headlamp Switch BK Left Side of Instrument Panel 32, 35, 38
Headlamp-Left BL At Headlamp 23, 28, 29
Headlamp-Right BL At Headlamp 1, 21, 26
Heated Seat Cushion - Driver BL Under Driver Seat N/S
Heated Seat Cushion - Passenger BL Under Passenger Seat N/S
Heated Seat Switch-Driver RD Center of Instrument Panel 33, 35, 36
Heated Seat Switch-Passenger BL Center of Instrument Panel 33, 35, 36
Horn Switch WT In Steering Wheel N/S
Horn-High Note BK Left Front Fender 23, 28, 29
Horn-Low Note BK Left Front Fender 23, 29
Idle Air Control Motor BK On Throttle Body 6
Ignition Coil GY Left Rear of Engine N/S
Ignition Switch BK Steering Column 31
Inlet Air Temperature/Pressure
SensorBK Right Side Engine 10
Input Speed Sensor BK At Transmission 15, 16
Instrument Cluster C1 GY Rear of Instrument Cluster 35
Instrument Cluster C2 GY Rear of Instrument Cluster 35
Instrument Cluster C3 WT Rear of Instrument Cluster 35
Intake Air Heater Relay Right Engine Compartment 2
Intake Air Temperature/Manifold
Absolute Pressure Sensor (Diesel)BK Left rear Engine N/S
Intake Air Temperature Sensor BK On Intake Manifold 5
Integrated Power Module C1 BK Left Front Fender 26, 28
Integrated Power Module C2 WT Left Front Fender 26, 28
Integrated Power Module C3 GR Left Front Fender 26, 28
Integrated Power Module C4 WT Left Front Fender 26, 28
Integrated Power Module C5 BK Left Front Fender 26, 28
Integrated Power Module C6 BK Left Front Fender 25, 26, 28
Integrated Power Module C7 GY Left Front Fender 26, 28
Integrated Power Module FCM BK In IPM N/S
Knock Sensor BK Left Rear of Engine 5, 7, 9
License Lamp-Left BK At Rear Bumper 50, 51
License Lamp-Right BK At Rear Bumper 50, 51
Lift Pump Motor BK Near T/O for WIF Sensor N/S
Line Pressure Sensor BK Right Rear of Transmission 15, 18
Lumbar Motor-Driver DK GY At Driver Seat N/S
Lumbar Motor-Passenger BK At Passenger Seat N/S
Manifold Absolute Pressure Sensor GY Left Front of Intake Manifold 6
Mode Door Actuator 1 BK Right Side of HVAC N/S
DR8W-91 CONNECTOR/GROUND/SPLICE LOCATION 8W - 91 - 5
CONNECTOR/GROUND/SPLICE LOCATION (Continued)

IAC Stepper Motor Program:The PCM is also
equipped with a memory program that records the
number of steps the IAC stepper motor most recently
advanced to during a certain set of parameters. For
example: The PCM was attempting to maintain a
1000 rpm target during a cold start-up cycle. The last
recorded number of steps for that may have been
125. That value would be recorded in the memory
cell so that the next time the PCM recognizes the
identical conditions, the PCM recalls that 125 steps
were required to maintain the target. This program
allows for greater customer satisfaction due to
greater control of engine idle.
Another function of the memory program, which
occurs when the power steering switch (if equipped),
or the A/C request circuit, requires that the IAC step-
per motor control engine rpm, is the recording of the
last targeted steps into the memory cell. The PCM
can anticipate A/C compressor loads. This is accom-
plished by delaying compressor operation for approx-
imately 0.5 seconds until the PCM moves the IAC
stepper motor to the recorded steps that were loaded
into the memory cell. Using this program helps elim-
inate idle-quality changes as loads change. Finally,
the PCM incorporates a9No-Load9engine speed lim-
iter of approximately 1800 - 2000 rpm, when it rec-
ognizes that the TPS is indicating an idle signal and
IAC motor cannot maintain engine idle.
A (factory adjusted) set screw is used to mechani-
cally limit the position of the throttle body throttle
plate.Never attempt to adjust the engine idle
speed using this screw.All idle speed functions are
controlled by the IAC motor through the PCM.
REMOVAL
3.7L V-6
The Idle Air Control (IAC) motor is located on the
side of the throttle body (Fig. 14).
(1) Remove air resonator box at throttle body.
(2) Disconnect electrical connector from IAC motor.
(3) Remove two mounting bolts (screws).
(4) Remove IAC motor from throttle body.
4.7L V-8
The Idle Air Control (IAC) motor is located on the
side of the throttle body (Fig. 15).
(1) Remove air resonator box at throttle body.
(2) Disconnect electrical connector from IAC motor.
(3) Remove two mounting bolts (screws).
(4) Remove IAC motor from throttle body.
5.7L V-8
The IAC motor is not serviceable on the 5.7L V-8
engine.
INSTALLATION
3.7L V-6
The Idle Air Control (IAC) motor is located on the
side of the throttle body (Fig. 14).
(1) Install IAC motor to throttle body.
(2) Install and tighten two mounting bolts (screws)
to 7 N´m (60 in. lbs.) torque.
(3) Install electrical connector.
(4) Install air resonator to throttle body.
4.7L V-8
The Idle Air Control (IAC) motor is located on the
side of the throttle body (Fig. 15).
(1) Install IAC motor to throttle body.
(2) Install and tighten two mounting bolts (screws)
to 7 N´m (60 in. lbs.) torque.
(3) Install electrical connector.
(4) Install air resonator to throttle body.
5.7L V-8
The IAC motor is not serviceable on the 5.7L V-8
engine.
Fig. 14 IDLE AIR CONTROL MOTOR - 3.7L V-6
1 - THROTTLE POSITION SENSOR (TPS)
2 - MOUNTING SCREWS
3 - IDLE AIR CONTROL MOTOR (IAC)
4 - MOUNTING SCREWS
DRFUEL INJECTION - GAS 14 - 29
IDLE AIR CONTROL MOTOR (Continued)

PITMAN SHAFT SEAL
REMOVAL
REMOVAL - GAS ENGINE
(1) Seperate the pitman arm from the gear box
(Refer to 19 - STEERING/LINKAGE/PITMAN ARM -
REMOVAL).
(2) Clean exposed end of pitman shaft and housing
with a wire brush.
(3) Rotate the steering wheel from stop to stop and
count the number of turns.
(4) Center the steering wheel by rotating it from
the stop back 1 1/2 turns to achieve center position.
(5) Remove the pitman shaft cover bolts.
NOTE: The pitman shaft will not clear the housing if
it is not centered.
(6) Remove the pitman shaft from the gear.
(7) Remove dust seal from the housing with a spe-
cial tool (Fig. 5).
CAUTION: Use care not to score the housing bore
when prying out seals and washer.
(8) Remove retaining ring with snap ring pliers.
(9) Remove washer from the housing.
NOTE: Tighten the slide hammer adapter 8990 into
the seal using wrenches, in order to make a tight fit
to pull the seal out. If this is not performed the seal
may tear on the removal making it difficult to
remove.(10) Remove oil seal from the housing with a spe-
cial tool 8990 with slide hammer C-3752.
REMOVAL - DIESEL
(1) Seperate the pitman arm from the gear box
(Refer to 19 - STEERING/LINKAGE/PITMAN ARM -
REMOVAL).
(2) Remove the steering gear box (Refer to 19 -
STEERING/GEAR - REMOVAL).
(3) Install the steering gear in a soft jawed bench
vise.
(4) Clean exposed end of pitman shaft and housing
with a wire brush.
(5) Rotate the input shaft with a 12 point socket
from stop to stop and count the number of turns (Fig.
6).
(6) Center the input shaft by rotating it from the
stop 1/2 of the total amount of turns (Fig. 6).
(7) Remove the pitman shaft cover bolts.
NOTE: The pitman shaft will not clear the housing if
it is not centered.
(8) Remove the pitman shaft from the gear.
(9) Remove dust seal from the housing with a spe-
cial tool 8990 (Fig. 5).
CAUTION: Use care not to score the housing bore
when prying out seals.
(10) Remove retaining ring with snap ring pliers.
(11) Remove washer from the housing.
Fig. 5 SLIDE HAMMER
1 - STEERING GEAR
2 - SLIDE HAMMER C-3752 USED WITH SPECIAL TOOL
ADAPTER
8990
Fig. 6 CENTERING STEERING GEAR
1 - STEERING GEAR
2 - 12 POINT SOCKET
3 - RATCHET
4 - INPUT SHAFT
DRGEAR - LINK/COIL 19 - 25

(7) Install the input shaft seal protector 8986 (Fig.
20).
(8) Coat the new seal inhigh temp greaseand
Install the new oil seal using special tool 8987 driver
and C-4171 handle (Fig. 21).
NOTE: Drive the oil seal into the housing until the
outer edge does not quite clear the snap ring
groove.
(9) Insert the snap ring into the housing. Using
special tool 8987 driver and C-4171 handle push the
snap ring and oil seal together until the snap ring
seats in the groove.NOTE: Generous amounts of the high temperature
grease from the seal kit should be applied to areas
between the pitman shaft bearing and oil seals and
also between the dust seals and snap ring.
(10) Install the new dust seal usinghigh temp
grease, special tool C-4171 (driver) and 8987 (han-
dle).
(11) Check to make sure the gear is centered in
the middle tooth before installing the pitman shaft
(Fig. 19).
(12) Install the pitman shaft into the steering gear
(Refer to 19 - STEERING/GEAR/PITMAN SHAFT -
INSTALLATION).
(13) Perform over-center meshload adjustment
(Refer to 19 - STEERING/GEAR - ADJUSTMENTS).
(14) Install the steering gear to the vehicle (Refer
to 19 - STEERING/GEAR - INSTALLATION).
(15) Perform a wheel alignment (Refer to 2 - SUS-
PENSION/WHEEL ALIGNMENT - STANDARD
PROCEDURE).
PITMAN SHAFT
REMOVAL
REMOVAL - GAS
(1) Separate the pitman arm from the gear box
(Refer to 19 - STEERING/LINKAGE/PITMAN ARM -
REMOVAL).
(2) Clean exposed end of pitman shaft and housing
with a wire brush.
(3) Rotate the steering wheel from stop to stop and
count the number of turns.
(4) Center the steering wheel by rotating it from
the stop back 1 1/2 turns to achieve center position.
(5) Remove the pitman shaft cover bolts.
NOTE: The pitman shaft will not clear the housing if
it is not centered.
(6) Remove the pitman shaft from the gear (Fig.
22).
(7) Remove the cover if needed by loosing the
adjuster nut, Then removing the cover from the pit-
man shaft.
REMOVAL - DIESEL
(1) Separate the pitman arm from the gear box
(Refer to 19 - STEERING/LINKAGE/PITMAN ARM -
REMOVAL).
(2) Remove the steering gear box (Refer to 19 -
STEERING/GEAR - REMOVAL).
(3) Install the steering gear in a soft jawed bench
vise.
Fig. 20 INPUT SHAFT SEAL PROTECTOR
1 - INPUT SHAFT
2 - SPECIAL TOOL 8986
Fig. 21 INPUT SHAFT SEAL INSTALLATION
1 - VALVE HOUSING
2 - SPECIAL TOOL 8987
3 - SPECIAL TOOL C-4171
19 - 30 GEAR - LINK/COILDR
STEERING GEAR INPUT SHAFT SEAL (Continued)