transmission oil DODGE RAM 1500 1998 2.G Service Manual

for more than about 1.6 kilometers (one mile) and
the vehicle speed remains greater than about twenty-
four kilometers-per-hour (fifteen miles-per-hour).
²Vacuum Fluorescent Display Synchroniza-
tion- The EMIC transmits electronic panel lamp
dimming level messages which allows all other elec-
tronic modules on the PCI data bus with Vacuum
Fluorescent Display (VFD) units to coordinate their
illumination intensity with that of the EMIC VFD
units.
²Vehicle Theft Security System- The EMIC
monitors inputs from the door cylinder lock
switch(es), the door ajar switches, the ignition
switch, and the Remote Keyless Entry (RKE) receiver
module, then provides electronic horn and lighting
request messages to the Front Control Module (FCM)
located on the Integrated Power Module (IPM) for
the appropriate VTSS alarm output features.
²Wiper/Washer System Control- The EMIC
provides electronic wiper and/or washer request mes-
sages to the Front Control Module (FCM) located on
the Integrated Power Module (IPM) for the appropri-
ate wiper and washer system features. (Refer to 8 -
ELECTRICAL/WIPERS/WASHERS - DESCRIP-
TION).
The EMIC houses six analog gauges and has pro-
visions for up to twenty-three indicators (Fig. 3) or
(Fig. 4). The EMIC includes the following analog
gauges:
²Coolant Temperature Gauge
²Fuel Gauge
²Oil Pressure Gauge
²Speedometer
²Tachometer
²Voltage Gauge
Some of the EMIC indicators are automatically
configured when the EMIC is connected to the vehi-
cle electrical system for compatibility with certain
optional equipment or equipment required for regula-
tory purposes in certain markets. While each EMIC
may have provisions for indicators to support every
available option, the configurable indicators will not
be functional in a vehicle that does not have the
equipment that an indicator supports. The EMIC
includes provisions for the following indicators (Fig.
3) or (Fig. 4):
²Airbag Indicator (with Airbag System only)
²Antilock Brake System (ABS) Indicator
(with ABS or Rear Wheel Anti-Lock [RWAL]
brakes only)
²Brake Indicator
²Cargo Lamp Indicator
²Check Gauges Indicator
²Cruise Indicator (with Speed Control only)
²Door Ajar Indicator²Electronic Throttle Control (ETC) Indicator
(with 5.7L Gasoline Engine only)
²Gear Selector Indicator (with Automatic
Transmission only)
²High Beam Indicator
²Lamp Out Indicator
²Low Fuel Indicator
²Malfunction Indicator Lamp (MIL)
²Seatbelt Indicator
²Security Indicator (with Sentry Key Immo-
bilizer & Vehicle Theft Security Systems only)
²Service Four-Wheel Drive Indicator (with
Four-Wheel Drive only)
²Tow/Haul Indicator (with Automatic Trans-
mission only)
²Transmission Overtemp Indicator (with
Automatic Transmission only)
²Turn Signal (Right and Left) Indicators
²Upshift Indicator (with Manual Transmis-
sion only)
²Washer Fluid Indicator
²Wait-To-Start Indicator (with Diesel Engine
only)
²Water-In-Fuel Indicator (with Diesel Engine
only)
Each indicator in the EMIC, except those located
within one of the VFD units, is illuminated by a ded-
icated LED that is soldered onto the EMIC electronic
circuit board. The LED units are not available for
service replacement and, if damaged or faulty, the
entire EMIC must be replaced. Cluster illumination
is accomplished by dimmable incandescent back
lighting, which illuminates the gauges for visibility
when the exterior lighting is turned on. Each of the
incandescent bulbs is secured by an integral bulb
holder to the electronic circuit board from the back of
the cluster housing.
Hard wired circuitry connects the EMIC to the
electrical system of the vehicle. These hard wired cir-
cuits are integral to several wire harnesses, which
are routed throughout the vehicle and retained by
many different methods. These circuits may be con-
nected to each other, to the vehicle electrical system
and to the EMIC 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.
The EMIC modules for this model are serviced only
as complete units. The EMIC module cannot be
adjusted or repaired. If a gauge, an LED indicator, a
VFD unit, the electronic circuit board, the circuit
DRINSTRUMENT CLUSTER 8J - 5
INSTRUMENT CLUSTER (Continued)

board hardware, the cluster overlay, or the EMIC
housing are damaged or faulty, the entire EMIC mod-
ule must be replaced. The cluster lens, hood and
mask unit and the individual incandescent lamp
bulbs with holders are available for individual ser-
vice replacement.
OPERATION
The ElectroMechanical Instrument Cluster (EMIC)
in this model also includes the hardware and soft-
ware necessary to serve as the electronic body control
module and is sometimes referred to as the Cab
Compartment Node or CCN. The following informa-
tion deals primarily with the instrument cluster
functions of this unit. Additional details of the elec-
tronic body control functions of this unit may be
found within the service information for the system
or component that the EMIC controls. For example:
Additional details of the audible warning functions ofthe EMIC are found within the Chime/Buzzer service
information.
The EMIC is designed to allow the vehicle operator
to monitor the conditions of many of the vehicle com-
ponents and operating systems. The gauges and indi-
cators in the EMIC provide valuable information
about the various standard and optional powertrains,
fuel and emissions systems, cooling systems, lighting
systems, safety systems and many other convenience
items. The EMIC is installed in the instrument panel
so that all of these monitors can be easily viewed by
the vehicle operator when driving, while still allow-
ing relative ease of access for service. The micropro-
cessor-based EMIC hardware and software uses
various inputs to control the gauges and indicators
visible on the face of the cluster. Some of these
inputs are hard wired, but most are in the form of
electronic messages that are transmitted by other
electronic modules over the Programmable Communi-
cations Interface (PCI) data bus network. (Refer to 8
Fig. 3 Gauges & Indicators - Gasoline Engine
1 - MALFUNCTION INDICATOR LAMP 13 - ELECTRONIC THROTTLE CONTROL (ETC) INDICATOR
2 - VOLTAGE GAUGE 14 - ENGINE TEMPERATURE GAUGE
3 - LEFT TURN INDICATOR 15 - SECURITY INDICATOR
4 - TACHOMETER 16 - GEAR SELECTOR INDICATOR DISPLAY (INCLUDES
CRUISE & UPSHIFT INDICATORS)
5 - AIRBAG INDICATOR 17 - CHECK GAUGES INDICATOR
6 - HIGH BEAM INDICATOR 18 - BRAKE INDICATOR
7 - SEATBELT INDICATOR 19 - ABS INDICATOR
8 - SPEEDOMETER 20 - ODOMETER/TRIP ODOMETER DISPLAY (INCLUDES
ENGINE HOURS, WASHER FLUID, LAMP OUTAGE, TOW/HAUL
& SERVICE 4x4 INDICATORS)
9 - RIGHT TURN INDICATOR 21 - ODOMETER/TRIP ODOMETER SWITCH BUTTON
10 - OIL PRESSURE GAUGE 22 - FUEL GAUGE
11 - CARGO LAMP INDICATOR 23 - LOW FUEL INDICATOR
12 - DOOR AJAR INDICATOR 24 - TRANSMISSION OVERTEMP INDICATOR
8J - 6 INSTRUMENT CLUSTERDR
INSTRUMENT CLUSTER (Continued)

- ELECTRICAL/ELECTRONIC CONTROL MOD-
ULES/COMMUNICATION - OPERATION).
The EMIC microprocessor smooths the input data
using algorithms to provide gauge readings that are
accurate, stable and responsive to operating condi-
tions. These algorithms are designed to provide
gauge readings during normal operation that are con-
sistent with customer expectations. However, when
abnormal conditions exist such as high coolant tem-
perature, the algorithm can drive the gauge pointer
to an extreme position and the microprocessor can
sound a chime through the on-board audible tone
generator to provide distinct visual and audible indi-
cations of a problem to the vehicle operator. The
instrument cluster circuitry may also produce audi-
ble warnings for other electronic modules in the vehi-
cle based upon electronic tone request messages
received over the PCI data bus. Each audible warn-ing is intended to provide the vehicle operator with
an audible alert to supplement a visual indication.
The EMIC circuitry operates on battery current
received through a fused B(+) fuse in the Integrated
Power Module (IPM) on a non-switched fused B(+)
circuit, and on battery current received through a
fused ignition switch output (run-start) fuse in the
IPM on a fused ignition switch output (run-start) cir-
cuit. This arrangement allows the EMIC to provide
some features regardless of the ignition switch posi-
tion, while other features will operate only with the
ignition switch in the On or Start positions. The
EMIC circuitry is grounded through a ground circuit
and take out of the instrument panel wire harness
with an eyelet terminal connector that is secured by
a ground screw to a ground location near the center
of the instrument panel structural support.
The EMIC also has a self-diagnostic actuator test
capability, which will test each of the PCI bus mes-
Fig. 4 Gauges & Indicators - Diesel Engine
1 - MALFUNCTION INDICATOR LAMP 14 - ENGINE TEMPERATURE GAUGE
2 - VOLTAGE GAUGE 15 - SECURITY INDICATOR
3 - LEFT TURN INDICATOR 16 - GEAR SELECTOR INDICATOR DISPLAY (INCLUDES
CRUISE & UPSHIFT INDICATORS)
4 - TACHOMETER 17 - WATER-IN-FUEL INDICATOR
5 - AIRBAG INDICATOR 18 - BRAKE INDICATOR
6 - HIGH BEAM INDICATOR 19 - WAIT-TO-START INDICATOR
7 - SEATBELT INDICATOR 20 - ODOMETER/TRIP ODOMETER DISPLAY (INCLUDES
ENGINE HOURS, WASHER FLUID, LAMP OUTAGE, TOW/HAUL
& SERVICE 4x4 INDICATORS)
8 - SPEEDOMETER 21 - ODOMETER/TRIP ODOMETER SWITCH BUTTON
9 - RIGHT TURN INDICATOR 22 - FUEL GAUGE
10 - OIL PRESSURE GAUGE 23 - LOW FUEL INDICATOR
11 - CARGO LAMP INDICATOR 24 - TRANSMISSION OVERTEMP INDICATOR
12 - DOOR AJAR INDICATOR 25 - CHECK GAUGES INDICATOR
13 - ABS INDICATOR
DRINSTRUMENT CLUSTER 8J - 7
INSTRUMENT CLUSTER (Continued)

sage-controlled functions of the cluster by lighting
the appropriate indicators, positioning the gauge nee-
dles at several predetermined calibration points
across the gauge faces, and illuminating all segments
of the odometer/trip odometer and gear selector indi-
cator Vacuum-Fluorescent Display (VFD) units.
(Refer to 8 - ELECTRICAL/INSTRUMENT CLUS-
TER - DIAGNOSIS AND TESTING). See the owner's
manual in the vehicle glove box for more information
on the features, use and operation of the EMIC.
GAUGES
All gauges receive battery current through the
EMIC circuitry only when the ignition switch is in
the On or Start positions. With the ignition switch in
the Off position battery current is not supplied to
any gauges, and the EMIC circuitry is programmed
to move all of the gauge needles back to the low end
of their respective scales. Therefore, the gauges do
not accurately indicate any vehicle condition unless
the ignition switch is in the On or Start positions.
All of the EMIC gauges are air core magnetic
units. Two fixed electromagnetic coils are located
within each gauge. These coils are wrapped at right
angles to each other around a movable permanent
magnet. The movable magnet is suspended within
the coils on one end of a pivot shaft, while the gauge
needle is attached to the other end of the shaft. One
of the coils has a fixed current flowing through it to
maintain a constant magnetic field strength. Current
flow through the second coil changes, which causes
changes in its magnetic field strength. The current
flowing through the second coil is changed by the
EMIC circuitry in response to messages received over
the PCI data bus. The gauge needle moves as the
movable permanent magnet aligns itself to the
changing magnetic fields created around it by the
electromagnets.
The gauges are diagnosed using the EMIC self-di-
agnostic actuator test. (Refer to 8 - ELECTRICAL/
INSTRUMENT CLUSTER - DIAGNOSIS AND
TESTING). Proper testing of the PCI data bus and
the electronic data bus message inputs to the EMIC
that control each gauge require the use of a DRBIIIt
scan tool. Refer to the appropriate diagnostic infor-
mation. Specific operation details for each gauge may
be found elsewhere in this service information.
VACUUM-FLUORESCENT DISPLAYS
The Vacuum-Fluorescent Display (VFD) units are
soldered to the EMIC electronic circuit board. With
the ignition switch in the Off or Accessory positions,
the odometer display is activated when the driver
door is opened (Rental Car mode) and is deactivated
when the driver door is closed. Otherwise, both dis-
play units are active when the ignition switch is inthe On or Start positions, and inactive when the igni-
tion switch is in the Off or Accessory positions.
The illumination intensity of the VFD units is con-
trolled by the EMIC circuitry based upon an input
from the headlamp switch and a dimming level input
received from the headlamp dimmer switch. The
EMIC synchronizes the illumination intensity of
other VFD units with that of the units in the EMIC
by sending electronic dimming level messages to
other electronic modules in the vehicle over the PCI
data bus.
The EMIC VFD units have several display capabil-
ities including odometer, trip odometer, engine hours,
gear selector indication (PRNDL) for models with an
automatic transmission, several warning or reminder
indications, and various diagnostic information when
certain fault conditions exist. An odometer/trip odom-
eter switch on the EMIC circuit board is used to con-
trol some of the display modes. This switch is
actuated manually by depressing the odometer/trip
odometer switch button that extends through the
lower edge of the cluster lens, just left of the tachom-
eter. Actuating this switch momentarily with the
ignition switch in the On position will toggle the
VFD between the odometer and trip odometer modes.
Depressing the switch button for about two seconds
while the VFD is in the trip odometer mode will
reset the trip odometer value to zero. While in the
odometer mode with the ignition switch in the On
position and the engine not running, depressing this
switch for about six seconds will display the engine
hours information. Holding this switch depressed
while turning the ignition switch from the Off posi-
tion to the On position will initiate the EMIC self-di-
agnostic actuator test. Refer to the appropriate
diagnostic information for additional details on this
VFD function. The EMIC microprocessor remembers
which display mode is active when the ignition
switch is turned to the Off position, and returns the
VFD display to that mode when the ignition switch is
turned On again.
The VFD units are diagnosed using the EMIC self-
diagnostic actuator test. (Refer to 8 - ELECTRICAL/
INSTRUMENT CLUSTER - DIAGNOSIS AND
TESTING). Proper testing of the PCI data bus and
the electronic data bus message inputs to the EMIC
that control some of the VFD functions requires the
use of a DRBIIItscan tool. Refer to the appropriate
diagnostic information. Specific operation details for
the odometer, the trip odometer, the gear selector
indicator and the various warning and reminder indi-
cator functions of the VFD may be found elsewhere
in this service information.
8J - 8 INSTRUMENT CLUSTERDR
INSTRUMENT CLUSTER (Continued)

required. Refer to the appropriate diagnostic infor-
mation.
TRANS TEMP INDICATOR
DESCRIPTION
A transmission over-temperature indicator is stan-
dard equipment on all instrument clusters (Fig. 31).
However, on vehicles not equipped with an optional
automatic transmission, this indicator is electroni-
cally disabled. The transmission over-temperature
indicator is located on the left side of the instrument
cluster, to the left of the fuel gauge. The transmission
over-temperature indicator consists of a stencil-like
cutout of the words ªTRANS TEMPº in the opaque
layer of the instrument cluster overlay. The dark
outer layer of the overlay prevents the indicator from
being clearly visible when it is not illuminated. A red
Light Emitting Diode (LED) behind the cutout in the
opaque layer of the overlay causes the ªTRANS
TEMPº text to appear in red through the translucent
outer layer of the overlay when the indicator is illu-
minated from behind by the LED, which is soldered
onto the instrument cluster electronic circuit board.
The transmission over-temperature indicator is ser-
viced as a unit with the instrument cluster.
OPERATION
The transmission over-temperature indicator gives
an indication to the vehicle operator when the trans-
mission fluid temperature is excessive, which may
lead to accelerated transmission component wear or
failure. This indicator is controlled by a transistor on
the instrument cluster circuit board based upon clus-
ter programming and electronic messages received by
the cluster from the Powertrain Control Module
(PCM) over the Programmable Communications
Interface (PCI) data bus. The transmission over-tem-
perature indicator Light Emitting Diode (LED) is
completely controlled by the instrument cluster logic
circuit, and that logic will only allow this indicator to
operate when the instrument cluster receives a bat-
tery current input on the fused ignition switch out-
put (run-start) circuit. Therefore, the LED will
always be off when the ignition switch is in any posi-
tion except On or Start. The LED only illuminates
when it is provided a path to ground by the instru-
ment cluster transistor. The instrument cluster will
turn on the transmission over-temperature indicator
for the following reasons:²Bulb Test- Each time the ignition switch is
turned to the On position the transmission over-tem-
perature indicator is illuminated for about two sec-
onds as a bulb test.
²Trans Over-Temp Lamp-On Message- Each
time the cluster receives a trans over-temp lamp-on
message from the PCM indicating that the transmis-
sion fluid temperature is 135É C (275É F) or higher,
the indicator will be illuminated and a single chime
tone is sounded. The indicator remains illuminated
until the cluster receives a trans over-temp lamp-off
message from the PCM, or until the ignition switch
is turned to the Off position, whichever occurs first.
The chime tone feature will only repeat during the
same ignition cycle if the transmission over-tempera-
ture indicator is cycled off and then on again by the
appropriate trans over-temp messages from the PCM.
²Actuator Test- Each time the cluster is put
through the actuator test, the transmission over-tem-
perature indicator will be turned on, then off again
during the bulb check portion of the test to confirm
the functionality of the LED and the cluster control
circuitry.
The PCM continually monitors the transmission
temperature sensor to determine the transmission
operating condition. The PCM then sends the proper
trans over-temp lamp-on or lamp-off messages to the
instrument cluster. If the instrument cluster turns on
the transmission over-temperature indicator due to a
high transmission oil temperature condition, it may
indicate that the transmission and/or the transmis-
sion cooling system are being overloaded or that they
require service. For further diagnosis of the trans-
mission over-temperature indicator or the instrument
cluster circuitry that controls the LED, (Refer to 8 -
ELECTRICAL/INSTRUMENT CLUSTER - DIAGNO-
SIS AND TESTING). For proper diagnosis of the
transmission temperature sensor, the PCM, the PCI
data bus, or the electronic message inputs to the
instrument cluster that control the transmission
over-temperature indicator, a DRBIIItscan tool is
required. Refer to the appropriate diagnostic infor-
mation.
TURN SIGNAL INDICATOR
DESCRIPTION
Two turn signal indicators, one right and one left,
are standard equipment on all instrument clusters
(Fig. 32). The turn signal indicators are located near
Fig. 31 Transmission Overtemp Indicator
Fig. 32 Turn Signal Indicators
8J - 40 INSTRUMENT CLUSTERDR
TOW/HAUL INDICATOR (Continued)

The wiper high/low relay can be diagnosed using
conventional diagnostic tools and methods. However,
conventional diagnostic methods may not prove con-
clusive in the diagnosis of the instrument cluster, the
Front Control Module (FCM), or the electronic mes-
sage inputs to or outputs from the instrument cluster
and the FCM that control the operation of the wiper
high/low relay. The most reliable, efficient, and accu-
rate means to diagnose the wiper high/low relay, the
instrument cluster, the FCM, or the electronic mes-
sage inputs and outputs related to the wiper high/low
relay operation requires the use of a DRBIIItscan
tool. Refer to the appropriate diagnostic information.
DIAGNOSIS AND TESTING - WIPER HIGH/LOW
RELAY
The wiper high/low relay (Fig. 23) is located in the
Integrated Power Module (IPM) in the engine com-
partment near the battery. Refer to the appropriate
wiring information. The wiring 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.
(1) Remove the wiper high/low relay from the IPM.
(Refer to 8 - ELECTRICAL/WIPERS/WASHERS/
WIPER HIGH/LOW RELAY - REMOVAL).
(2) A relay in the de-energized position should
have continuity between terminals 87A and 30, and
no continuity between terminals 87 and 30. If OK, go
to Step 3. If not OK, replace the faulty relay.
(3) Resistance between terminals 85 and 86 (elec-
tromagnet) should be 75   8 ohms. If OK, go to Step
4. If not OK, replace the faulty relay.(4) Connect a battery to terminals 85 and 86.
There should now be continuity between terminals
30 and 87, and no continuity between terminals 87A
and 30. If OK, reinstall the relay and use a DRBIIIt
scan tool to perform further testing. Refer to the
appropriate diagnostic information.
REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Remove the cover from the Integrated Power
Module (IPM) (Fig. 24).
(3) Remove the wiper high/low relay by grasping it
firmly and pulling it straight out from the receptacle
in the IPM.
Fig. 23 ISO Micro Relay
30 - COMMON FEED
85 - COIL GROUND
86 - COIL BATTERY
87 - NORMALLY OPEN
87A - NORMALLY CLOSED
Fig. 24 Integrated Power Module
1 - 15 - CARTRIDGE FUSE
16 - 53 - BLADE FUSE
54 - HEATED MIRROR RELAY
55 - WIPER ON/OFF RELAY
56 - A/C CONDENSER FAN RELAY
57 - ENGINE CONTROL RELAY
58 - FUEL PUMP RELAY
59 - TRANSMISSION RELAY
60 - WIPER HIGH/LOW RELAY
61 - SPARE
62 - FOG LAMP RELAY
63 - ADJUSTABLE PEDAL RELAY
64 - A/C CLUTCH RELAY
65 - SPARE
66 - O2 RELAY
67 - SPARE
68 - SPARE
69 - SPARE
70 - SPARE
71 - SPARE
72 - STARTER RELAY
73 - PARK LAMP RELAY
DRWIPERS/WASHERS 8R - 21
WIPER HIGH/LOW RELAY (Continued)

8W-02 COMPONENT INDEX
Component Page
A/C Compressor Clutch................. 8W-42
A/C Compressor Clutch Relay............ 8W-42
A/C Pressure Transducer................ 8W-42
A/C-Heater Control.................... 8W-42
Accelerator Pedal Position Sensor......... 8W-30
Adjustable Pedal Motor................. 8W-30
Adjustable Pedal Relay................. 8W-30
Adjustable Pedal Switch................ 8W-30
Airbag Control Module................. 8W-43
Airbag-Squibs........................ 8W-43
Airbag-Curtains....................... 8W-43
Airbag-Passenger On/Off Switch.......... 8W-43
Ambient Temperature Sensor............ 8W-49
Amplifier Audio....................... 8W-47
Ashtray Lamp........................ 8W-44
Auto Shut Down Relay................. 8W-30
Automatic Day/Night Mirror.......... 8W-49, 55
Auxiliary Battery..................... 8W-20
Backup Lamp Switch.................. 8W-51
Battery............................. 8W-20
Battery Temperature Sensor............. 8W-30
Blend Door Actuators.................. 8W-42
Blower Motor......................... 8W-42
Blower Motor Resistor Block............. 8W-42
Brake Fluid Level Switch............ 8W-34, 35
Brake Lamp Switch.................... 8W-33
Brake Transmission Shift Interlock
Solenoid........................... 8W-40
Camshaft Position Sensor............... 8W-30
Capacitor............................ 8W-30
Center High Mounted Stop Lamp-
Aftermarket........................ 8W-51
Center High Mounted Stop Lamp/Cargo
Lamp.......................... 8W-44, 51
Cigar Lighter Outlet................... 8W-41
Circuit Breaker....................... 8W-10
Clearance Lamps...................... 8W-50
Clockspring................. 8W-33, 41, 43, 47
Clutch Interlock Brake Switch........... 8W-21
Coil On Plugs........................ 8W-30
Compass/Mini-Trip Computer............ 8W-49
Condenser Fan....................... 8W-42
Condenser Fan Relay.................. 8W-42
Controller Antilock Brake............ 8W-34, 35
Crankshaft Position Sensor.............. 8W-30
Cylinder Lock Switch-Driver............. 8W-61
Data Link Connector................... 8W-18
Data Link Connector-Engine............. 8W-18
Dome Lamp....................... 8W-44, 49
Door Ajar Switches.................... 8W-40
Door Lock Motor/Ajar Switches........ 8W-40, 61
Door Lock Switch-Passenger............. 8W-61Component Page
Door Module................... 8W-60, 61, 62
EGR Solenoid........................ 8W-30
Electric Backlight..................... 8W-48
Electric Brake Provision................ 8W-54
Electronic Throttle Control Module........ 8W-30
Engine Control Module................. 8W-30
Engine Coolant Temperature Sensor....... 8W-30
Engine Oil Pressure Switch.............. 8W-30
EVAP/Purge Solenoid.................. 8W-30
Evaporator Temperature Sensor.......... 8W-42
Fender Lamps........................ 8W-51
Fog Lamp Relay...................... 8W-50
Fog Lamps.......................... 8W-50
Front Control Module.................. 8W-10
Fuel Control Actuator.................. 8W-30
Fuel Heater.......................... 8W-30
Fuel Heater Relay..................... 8W-30
Fuel Injector Packs.................... 8W-30
Fuel Injectors........................ 8W-30
Fuel Pump Module.................... 8W-30
Fuel Pump Motor..................... 8W-30
Fuel Pump Relay...................... 8W-30
Fuses............................ 8W-10, 33
Fusible Link......................... 8W-10
Generator........................... 8W-20
Glove Box Lamp And Switch............. 8W-44
Grounds............................ 8W-15
Hands Free Module.................... 8W-55
Headlamp Switch.................. 8W-40, 50
Headlamps.......................... 8W-50
Heated Mirror Relay................... 8W-62
Heated Seat Cushions.................. 8W-63
Horn Relay.......................... 8W-41
Horn Switch......................... 8W-41
Horn-High Note....................... 8W-41
Horn-Low Note....................... 8W-41
Idle Air Control Motor.................. 8W-30
Ignition Switch....................... 8W-10
Inlet Air Temperature Sensor............ 8W-30
Input Speed Sensor.................... 8W-31
Instrument Cluster.................... 8W-40
Intake Air Heater Relays............... 8W-30
Intake Air Temperature Sensor........... 8W-30
Intake Air Temperature/Manifold Absolute
Pressure Sensor..................... 8W-30
Integrated Power Module............... 8W-10
Knock Sensosr........................ 8W-30
License Lamps....................... 8W-51
Lift Pump Motor...................... 8W-30
Line Pressure Sensor................ 8W-30, 31
Lumbar Motors....................... 8W-63
Lumbar Switch....................... 8W-63
DR8W-02 COMPONENT INDEX 8W - 02 - 1

8W-10 POWER DISTRIBUTION
Component Page
A/C Compressor Clutch....................8W-10-17, 40
A/C Compressor Clutch Relay.................8W-10-17, 40
A/C-Heater Control....................8W-10-42, 43, 49
Adjustable Pedal Relay....................8W-10-15, 32
Adjustable Pedal Switch..................8W-10-15, 32, 42
Airbag Control Module.....................8W-10-42, 44
Airbag-Passenger On/Off Switch.................8W-10-42
Ambient Temperature Sensor.................8W-10-48, 50
Amplifier Audio..........................8W-10-31
Ashtray Lamp...........................8W-10-35
Auto Shut Down Relay....................8W-10-12, 19
Automatic Day/Night Mirror.................8W-10-41, 48
Auxiliary Battery.........................8W-10-12
Backup Lamp Switch.....................8W-10-44, 49
Battery.............................8W-10-12, 19
Blower Motor............................8W-10-52
Brake Lamp Switch....................8W-10-14, 30, 40
Capacitor..............................8W-10-22
Cigar Lighter Outlet........................8W-10-46
Circuit Breaker...........................8W-10-52
Clearance Lamp No. 1.......................8W-10-35
Clearance Lamp No. 2.......................8W-10-35
Clearance Lamp No. 3.......................8W-10-35
Clearance Lamp No. 4.......................8W-10-35
Clearance Lamp No. 5.......................8W-10-35
Clutch Interlock Brake Switch..................8W-10-37
Coil On Plug No. 1.......................8W-10-20, 23
Coil On Plug No. 2.......................8W-10-21, 22
Coil On Plug No. 3.......................8W-10-20, 23
Coil On Plug No. 4.......................8W-10-21, 22
Coil On Plug No. 5.......................8W-10-20, 23
Coil On Plug No. 6.......................8W-10-21, 22
Coil On Plug No. 7.......................8W-10-20, 23
Coil On Plug No. 8.......................8W-10-21, 22
Compass/Mini-Trip Computer...............8W-10-31, 39, 41
Condenser Fan.........................8W-10-18, 45
Condenser Fan Relay.....................8W-10-18, 45
Controller Antilock Brake.................8W-10-14, 28, 44
Data Link Connector......................8W-10-30, 50
Door Lock Switch-Passenger....................8W-10-41
Driver Door Module....................8W-10-15, 32, 52
Electric Backlight.........................8W-10-49
Electric Brake Provision....................8W-10-12, 19
Engine Control Module................8W-10-12, 26, 38, 40
Fender Lamp-Front Left......................8W-10-35
Fender Lamp-Front Right.....................8W-10-35
Fender Lamp-Rear Left......................8W-10-35
Fender Lamp-Rear Right.....................8W-10-35
Fog Lamp Relay........................8W-10-16, 36
Fog Lamp-Left...........................8W-10-36
Fog Lamp-Right..........................8W-10-36
Front Control Module . 8W-10-13, 26, 29, 30, 32, 33, 34, 36, 47, 48, 50, 51
Fuel Heater............................8W-10-53
Fuel Heater Relay.....................8W-10-18, 40, 53
Fuel Injector No. 1.......................8W-10-23, 24
Fuel Injector No. 2.......................8W-10-21, 22
Fuel Injector No. 3.......................8W-10-23, 24
Fuel Injector No. 4.......................8W-10-21, 22
Fuel Injector No. 5.......................8W-10-23, 24
Fuel Injector No. 6.......................8W-10-21, 22
Fuel Injector No. 7.......................8W-10-23, 24
Fuel Injector No. 8.......................8W-10-21, 22
Fuel Pump Module.......................8W-10-17, 39
Fuel Pump Relay......................8W-10-17, 39, 40
Fuse 1.............................8W-10-12, 19
Fuse 2...........................8W-10-12, 13, 19
Fuse 3.............................8W-10-13, 25
Fuse 4.............................8W-10-13, 25
Fuse 5.......................8W-10-12, 13, 14, 26, 27
Fuse 6...........................8W-10-13, 14, 28
Fuse 7.............................8W-10-14, 28
Fuse 8.............................8W-10-15, 29
Fuse 9.............................8W-10-13, 25
Fuse 10.............................8W-10-13, 25
Fuse 11...........................8W-10-13, 14, 30
Fuse 12...........................8W-10-18, 45, 53
Fuse 13.............................8W-10-13, 30
Fuse 14.............................8W-10-15, 37
Fuse 15...........................8W-10-16, 17, 34
Fuse 16.............................8W-10-17, 40
Fuse 17...........................8W-10-17, 18, 39
Fuse 18.............................8W-10-14, 30
Fuse 19.............................8W-10-14, 31
Fuse 20.............................8W-10-13, 25
Fuse 21.............................8W-10-14, 31
Fuse 22.............................8W-10-14, 31
Fuse 23.............................8W-10-14, 31
Fuse 24.............................8W-10-14, 30Component Page
Fuse 25.............................8W-10-14, 31
Fuse 26...............................8W-10-49
Fuse 27...........................8W-10-17, 18, 43
Fuse 28.............................8W-10-40, 41
Fuse 29...............................8W-10-46
Fuse 32.............................8W-10-17, 34
Fuse 33.............................8W-10-17, 34
Fuse 34.............................8W-10-17, 34
Fuse 35...............................8W-10-44
Fuse 36...............................8W-10-43
Fuse 37...............................8W-10-44
Fuse 38.............................8W-10-43, 44
Fuse 40...........................8W-10-15, 16, 32
Fuse 41.............................8W-10-16, 36
Fuse 42.............................8W-10-14, 32
Fuse 43.............................8W-10-14, 32
Fuse 45...........................8W-10-16, 17, 36
Fuse 46...........................8W-10-15, 16, 33
Fuse 47.............................8W-10-16, 33
Fuse 48.............................8W-10-15, 32
Fuse 49.............................8W-10-12, 19
Fuse 50.............................8W-10-26, 40
Fuse 51...........................8W-10-14, 15, 30
Fuse 52.............................8W-10-43, 44
Fuse 53...............................8W-10-41
Fusible Link............................8W-10-12
G104........................8W-10-27, 29, 47, 48, 53
G201................................8W-10-25
Generator..............................8W-10-12
Headlamp Switch.........................8W-10-36
Headlamp-Left...........................8W-10-51
Headlamp-Right..........................8W-10-51
Heated Mirror Relay......................8W-10-18, 43
Horn Relay...........................8W-10-16, 36
Horn-High Note..........................8W-10-36
Horn-Low Note...........................8W-10-36
Ignition Switch...............8W-10-13, 25, 37, 41, 44, 46, 52
Instrument Cluster............8W-10-14, 25, 30, 31, 41, 46, 52
Integrated Power Module . . 8W-10-3, 4, 12, 13, 14, 15, 16, 17, 18, 19, 25,
26, 27, 28, 29, 30, 31, 32, 33, 34, 36, 37, 39, 40, 41, 42, 43, 44, 45, 46,
47, 48, 49, 50, 51, 53
License Lamp-Left.........................8W-10-34
License Lamp-Right........................8W-10-34
Oxygen Sensor Downstream Relay..............8W-10-12, 19
Park Lamp Relay.......................8W-10-17, 34
Park/Turn Signal Lamp-Left Front..............8W-10-34, 47
Park/Turn Signal Lamp-Right Front.............8W-10-34, 47
Passenger Lumbar Switch.....................8W-10-28
Power Mirror-Left.........................8W-10-43
Power Mirror-Right........................8W-10-43
Power Outlet..........................8W-10-14, 31
Power Outlet-Console.....................8W-10-14, 32
Power Seat Switch-Driver.....................8W-10-28
Power Seat Switch-Passenger...................8W-10-28
Power Window Circuit Breaker..................8W-10-52
Powertrain Control Module . . 8W-10-18, 19, 22, 27, 31, 37, 39, 40, 45, 52
PTCNo.1 .........................8W-10-39, 40, 41
PTCNo.2 .............................8W-10-46
PTCNo.5 .............................8W-10-33
Radio..............................8W-10-30, 46
Rear Window Defogger Relay...................8W-10-49
Seat Belt Tensioner Reducer....................8W-10-46
Seat Heater Interface Module...................8W-10-32
Sentry Key Immobilizer Module..............8W-10-31, 39, 40
Starter Motor..........................8W-10-15, 37
Starter Motor Relay......................8W-10-15, 37
Tail/Stop/Turn Signal Lamp-Left...........8W-10-34, 47, 48, 50
Tail/Stop/Turn Signal Lamp-Right..........8W-10-35, 47, 48, 50
Tailgate Lamp...........................8W-10-34
Trailer Tow Connector.................8W-10-16, 17, 33, 34
Trailer Tow Connector-Add On..........8W-10-14, 31, 33, 34, 48
Trailer Tow Left Turn Relay..................8W-10-16, 33
Trailer Tow Right Turn Relay.................8W-10-16, 33
Transfer Case Control Module...............8W-10-14, 32, 37
Transfer Case Selector Switch...................8W-10-41
Transmission Control Relay................8W-10-13, 26, 27
Transmission Range Sensor................8W-10-38, 44, 49
Transmission Solenoid Assembly.................8W-10-26
Transmission Solenoid/TRS Assembly...........8W-10-27, 44, 49
Underhood Lamp..........................8W-10-30
Vistronic Fan Drive........................8W-10-43
Washer Fluid Level Switch....................8W-10-48
Washer Pump Motor-Front....................8W-10-48
Wiper High/Low Relay.....................8W-10-15, 29
Wiper Motor-Front.......................8W-10-29, 48
Wiper On/Off Relay......................8W-10-15, 29
DR8W-10 POWER DISTRIBUTION 8W - 10 - 1

8W-30 FUEL/IGNITION SYSTEM
Component Page
A/C Compressor Clutch Relay............ 8W-30-9, 58
A/C Pressure Transducer......... 8W-30-23, 28, 29, 45
Accelerator Pedal Position Sensor . . . 8W-30-29, 47, 64, 65
Adjustable Pedal Motor................. 8W-30-61
Adjustable Pedal Relay.................. 8W-30-61
Adjustable Pedal Switch................. 8W-30-61
Ambient Temperature Sensor............. 8W-30-30
Auto Shut Down Relay................... 8W-30-4
Battery............................ 8W-30-52
Battery Temperature Sensor............ 8W-30-12, 56
Brake Lamp Switch............. 8W-30-8, 36, 57, 63
Camshaft Position Sensor........ 8W-30-10, 29, 45, 46
Capacitor........................... 8W-30-13
Clockspring..................... 8W-30-8, 36, 59
Coil On Plug No. 1.................. 8W-30-14, 39
Coil On Plug No. 2.................. 8W-30-15, 37
Coil On Plug No. 3.................. 8W-30-14, 39
Coil On Plug No. 4.................. 8W-30-15, 37
Coil On Plug No. 5.................. 8W-30-16, 39
Coil On Plug No. 6.................. 8W-30-13, 37
Coil On Plug No. 7.................. 8W-30-16, 39
Coil On Plug No. 8.................. 8W-30-13, 37
Condenser Fan Relay.................... 8W-30-9
Controller Antilock Brake............ 8W-30-6, 11, 57
Crankshaft Position Sensor............ 8W-30-10, 46
Data Link Connector............... 8W-30-9, 22, 55
Data Link Connector-Engine.............. 8W-30-51
EGR Solenoid................... 8W-30-28, 29, 32
Electronic Throttle Control Module.......... 8W-30-35
Engine Control Module....... 8W-30-42, 43, 44, 45, 46,
47, 48, 49, 50, 51, 52, 53, 54,
55, 56, 57, 58, 59, 60, 62, 63, 64, 65
Engine Coolant Temperature Sensor.... 8W-30-23, 41, 47
Engine Oil Pressure Switch.......... 8W-30-2, 53, 56
EVAP/Purge Solenoid................... 8W-30-12
Front Control Module................... 8W-30-61
Fuel Control Actuator................... 8W-30-50
Fuel Heater......................... 8W-30-60
Fuel Heater Relay..................... 8W-30-60
Fuel Injector No. 1.................. 8W-30-14, 40
Fuel Injector No. 2.................. 8W-30-15, 38
Fuel Injector No. 3.................. 8W-30-14, 40
Fuel Injector No. 4.................. 8W-30-15, 38
Fuel Injector No. 5.................. 8W-30-14, 40
Fuel Injector No. 6.................. 8W-30-15, 38
Fuel Injector No. 7.................. 8W-30-16, 40
Fuel Injector No. 8.................. 8W-30-13, 38
Fuel Injector Pack No. 1................. 8W-30-42
Fuel Injector Pack No. 2............ 8W-30-42, 43, 44
Fuel Injector Pack No. 3................. 8W-30-44
Fuel Pump Module................... 8W-30-3, 58
Fuel Pump Motor...................... 8W-30-48
Fuel Pump Relay....................... 8W-30-3
Fuse 2.............................. 8W-30-4
Fuse 5........................... 8W-30-25, 62
Fuse 12............................ 8W-30-60
Fuse 17............................. 8W-30-3
Fuse 19............................ 8W-30-52
Fuse 23............................. 8W-30-2Component Page
Fuse 36.......................... 8W-30-54, 61
Fuse 40............................ 8W-30-61
Fuse 49............................. 8W-30-4
Fuse 50..................... 8W-30-2, 55, 58, 62
Fusible Link......................... 8W-30-52
G104........................ 8W-30-3, 8, 25, 60
G105............................ 8W-30-56, 58
G107........... 8W-30-2, 7, 15, 18, 19, 20, 21, 30, 32
G114 .............................. 8W-30-53
G120............................ 8W-30-51, 60
G201............................... 8W-30-6
G202.............................. 8W-30-61
Generator......................... 8W-30-7, 51
Idle Air Control Motor................... 8W-30-9
Ignition Switch..................... 8W-30-6, 22
Inlet Air Temperature Sensor............. 8W-30-49
Input Speed Sensor.................... 8W-30-24
Instrument Cluster.................... 8W-30-30
Intake Air Heater Relay No. 1............. 8W-30-56
Intake Air Heater Relay No. 2............. 8W-30-56
Intake Air Temperature Sensor.......... 8W-30-23, 41
Intake Air Temperature/Manifold Absolute
Pressure Sensor..................... 8W-30-50
Integrated Power Module.... 8W-30-2, 3, 4, 9, 25, 52, 54,
55, 58, 60, 61, 62, 64
Knock Sensor........................ 8W-30-31
Knock Sensor-Left..................... 8W-30-33
Knock Sensor-Right.................... 8W-30-33
Lift Pump Motor...................... 8W-30-51
Line Pressure Sensor................... 8W-30-17
Manifold Absolute Pressure Sensor..... 8W-30-23, 29, 41
Natural Vacuum Leak Detection Assembly..... 8W-30-7
Output Speed Sensor................. 8W-30-24, 62
Oxygen Sensor 1/1 Upstream........... 8W-30-20, 21
Oxygen Sensor 1/2 Downstream......... 8W-30-18, 19
Oxygen Sensor 2/1 Upstream........... 8W-30-20, 21
Oxygen Sensor 2/2 Downstream......... 8W-30-18, 19
Oxygen Sensor Downstream Relay........... 8W-30-4
Power Steering Pressure Switch............ 8W-30-7
Powertrain Control Module....... 8W-30-2, 3, 4, 5, 6, 7,
8, 9, 10, 11, 12, 13, 14, 15, 16,
17, 18, 19, 20, 21, 22, 23, 24,
25, 26, 27, 28, 29, 30, 31, 32,
33, 35, 36, 37, 38, 39, 40, 41
PTCNo.1 ....................... 8W-30-3, 9, 58
Pto Switch........................... 8W-30-6
Speed Control Servo.................. 8W-30-8, 63
Speed Control Switch-Left............. 8W-30-36, 59
Speed Control Switch-Right............ 8W-30-36, 59
Starter Motor Relay.................. 8W-30-2, 64
Throttle Position Sensor................. 8W-30-17
Tow/Haul Overdrive Switch............. 8W-30-6, 64
Transmission Control Relay............ 8W-30-25, 62
Transmission Range Sensor............... 8W-30-64
Transmission Solenoid Assembly......... 8W-30-54, 62
Transmission Solenoid/TRS Assembly . 8W-30-5, 25, 26, 27
Vacuum Pump........................ 8W-30-58
Vistronic Fan Drive.................... 8W-30-54
Water In Fuel Sensor................ 8W-30-47, 48
DR8W-30 FUEL/IGNITION SYSTEM 8W - 30 - 1

ENGINE CONTROL MODULE C2 (DIESEL) - 50 WAY
CAV CIRCUIT FUNCTION
1- -
2- -
3 K615 18VT/WT INLET AIR TEMPERATURE SENSE
3 K615 18BR/WT (M/T) INLET AIR TEMPERATURE SENSE
4 V35 18VT/OR (A/T) S/C VENT CONTROL
5 K176 18BR/OR INTAKE AIR HEATER RELAY NO 2 CONTROL
6 K174 18BR/YL INTAKE AIR HEATER RELAY NO 1 CONTROL
7 V32 18VT/YL (A/T) SPEED CONTROL SUPPLY
8- -
9 T41 18YL/DB (A/T) PARK/NEUTRAL POSITION SWITCH SENSE (T41)
10 K161 18BR/LB FAN SPEED SENSOR
11 B22 18DG/YL VEHICLE SPEED SENSOR SIGNAL NO. 1
12 G6 18VT/GY OIL PRESSURE SIGNAL
13 T6 18DG (A/T) TOW/HAUL OVERDRIVE OFF SWITCH SENSE
14 T118 18DG (A/T) GOVERNOR PRESSURE SOLENOID CONTROL
15 T9 18DG/TN (A/T) 3-4 SOLENIOD CONTROL
16 D21 18WT/BR SCI TRANSMIT (PCM)
16 D21 18PK (M/T) SCI TRANSMIT
17 - -
18 T38 18YL/BR (A/T) GOVERNOR PRESSURE SENSOR SIGNAL
19 D20 18WT/LG SCI RECEIVE (PCM)
20 A209 16RD FUSED B(+)
21 Z902 16BK GROUND
22 - -
23 F856 18YL/PK 5 VOLT SUPPLY
24 K900 18DB/DG SENSOR GROUND
25 T75 18YL/LB (A/T) TORQUE CONVERTER CLUTCH SOLENOID CONTROL
26 N4 18DB/WT FUEL LEVEL SENSOR SIGNAL
27 - -
28 D25 18WT/VT PCI BUS
29 T54 18DG/OR (A/T) TRANSMISSION TEMPERATURE SENSOR SIGNAL
30 A209 16RD FUSED B(+)
31 T515 18YL/DB (A/T) TRANSMISSION CONTROL RELAY CONTROL
32 F202 18PK/GY FUSED IGNITION SWITCH OUTPUT (RUN-START)
33 K854 18VT/BR (M/T) 5 VOLT SUPPLY
34 V36 18VT/YL (A/T) S/C VACUUM CONTROL
35 K616 18BR/YL INLET AIR PRESSURE SENSE
36 V32 18VT/YL (M/T) SPEED CONTROL SUPPLY
37 B29 18DG/WT BRAKE SWITCH SIGNAL
38 - -
39 - -
40 A209 16RD FUSED B(+)
41 C13 18LB/OR A/C CLUTCH RELAY CONTROL
42 - -
43 K160 18BR/OR PARK LOCKOUT SOLENOID CONTROL
44 T14 18DG/BR (A/T) OUTPUT SPEED SENSOR SIGNAL
45 T13 18DG/VT (A/T) SENSOR GROUND
46 V37 18VT S/C SWITCH NO. 1 SIGNAL
47 K25 18DB/VT BATT TEMP SIGNAL
48 K400 18BR/VT (M/T) APPS NO.2 RETURN
49 Z902 16BK GROUND
50 Z902 16BK GROUND
8W - 80 - 60 8W-80 CONNECTOR PIN-OUTSDR