2006 MERCEDES-BENZ SPRINTER airbag off

(3) Disconnect the front lamp unit wire harness
connector from the fog lamp bulb base (Fig. 14).
(4) Disengage the two fog lamp bulb retainers by
pushing them slightly toward the front lamp unit
housing, outward to each side of the bulb base, then
pivot the retainers off of the bulb base.
(5) Remove the fog lamp bulb from the integral
bulb holder on the front lamp unit reflector.
INSTALLATION
(1) Position the fog lamp bulb into the integral
bulb holder on the front lamp unit reflector. Be cer-tain that the lugs on the bulb base are engaged in
the recesses of the bulb holder (Fig. 14).
(2) Engage the two fog lamp bulb retainers by piv-
oting them over the bulb base, pressing them slightly
toward the front lamp unit housing, then inward on
each side of the bulb base.
(3) Reconnect the front lamp unit wire harness
connector to the fog lamp bulb base.
(4) Position the front lamp unit rear cover onto the
lamp housing and engage the retainers over each
side of the cover to secure it (Fig. 13).
(5) Reconnect the battery negative cable.
FOG LAMP RELAY
REMOVAL
Fog lamps are optional equipment on this model.
On vehicles equipped with fog lamps, a fog lamp
relay is located in a dedicated connector of the vehi-
cle wire harness. This connector is snapped into an
opening in a stamped sheet metal bracket which is
secured with screws within the driver side front seat
riser just beneath the seat riser cover panel.
WARNING: To avoid personal injury or death, on
vehicles equipped with airbags, disable the supple-
mental restraint system before attempting any
steering wheel, steering column, airbag, seat belt
tensioner, or instrument panel component diagno-
sis or service. Disconnect and isolate the battery
negative (ground) cable, then wait two minutes for
the system capacitor to discharge before perform-
ing further diagnosis or service. This is the only
sure way to disable the supplemental restraint sys-
tem. Failure to take the proper precautions could
result in accidental airbag deployment.
(1) Disconnect and isolate the battery negative
cable.
(2) Move the driver side front seat to its most for-
ward position for easiest access to the seat riser
cover panel (Fig. 15).
Fig. 13 Front Lamp Unit Bulbs Remove/Install
1 - COVER RETAINER (2)
2 - BULB RETAINER (3)
3 - FOG LAMP BULB (OPTIONAL)
4 - COVER
5 - LOW BEAM BULB
6 - POSITION BULB
7 - HIGH BEAM BULB
8 - TURN/PARK/SIDE MARKER BULB
9 - FRONT LAMP UNIT
Fig. 14 Fog Lamp Bulb Remove/Install
1 - LAMP HOUSING
2 - BULB RETAINER
3 - CONNECTOR
4 - BULB BASE
VALAMPS/LIGHTING - EXTERIOR 8L - 11

(4) Remove the headlamp leveling switch from the
face of the cluster bezel.
INSTALLATION
WARNING: To avoid personal injury or death, on
vehicles equipped with airbags, disable the supple-
mental restraint system before attempting any
steering wheel, steering column, airbag, seat belt
tensioner, or instrument panel component diagno-
sis or service. Disconnect and isolate the battery
negative (ground) cable, then wait two minutes for
the system capacitor to discharge before perform-
ing further diagnosis or service. This is the only
sure way to disable the supplemental restraint sys-
tem. Failure to take the proper precautions could
result in accidental airbag deployment.
(1) Position the headlamp leveling switch to the
proper mounting hole on the face of the cluster bezel
(Fig. 29).
(2) Using hand pressure, push the headlamp level-
ing switch firmly and evenly into the switch mount-
ing hole of the cluster bezel until both of the latches
on the switch body are fully engaged.
(3) Reinstall the cluster bezel onto the instrument
panel. (Refer to 23 - BODY/INSTRUMENT PANEL/
CLUSTER BEZEL - INSTALLATION).
(4) Reconnect the battery negative cable.
HIGH BEAM HEADLAMP BULB
REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Disengage and swing the retainers that secure
the front lamp unit rear cover to each side of thelamp housing and remove the cover (Fig. 31).
(3) Disconnect the front lamp unit wire harness
connector from the high beam headlamp bulb base
(Fig. 32).
(4) Disengage the high beam headlamp bulb
retainer by pushing it slightly toward the front lamp
unit housing and outward from the bulb base, then
pivot the retainer off of the bulb base.
(5) Remove the high beam headlamp bulb from the
integral bulb holder on the front lamp unit reflector.
Fig. 30 Headlamp Leveling Switch Remove/Install
1 - SWITCH
2 - LATCH (2)
3 - CLUSTER BEZELFig. 31 Front Lamp Unit Bulbs Remove/Install
1 - COVER RETAINER (2)
2 - BULB RETAINER (3)
3 - FOG LAMP BULB (OPTIONAL)
4 - COVER
5 - LOW BEAM BULB
6 - POSITION BULB
7 - HIGH BEAM BULB
8 - TURN/PARK/SIDE MARKER BULB
9 - FRONT LAMP UNIT
Fig. 32 High Beam Headlamp Bulb Remove/Install
1 - LAMP HOUSING
2 - BULB RETAINER
3 - CONNECTOR
4 - BULB BASE
8L - 18 LAMPS/LIGHTING - EXTERIORVA

and to the supplemental restraint system compo-
nents through the use of a combination of soldered
splices, splice block connectors, and many different
types of wire harness terminal connectors and insu-
lators. 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.
OPERATION
ACTIVE RESTRAINTS
The primary passenger restraints in this or any
other vehicle are the standard equipment factory-in-
stalled seat belts. Seat belts are referred to as an
active restraint because the vehicle occupants are
required to physically fasten and properly adjust
these restraints in order to benefit from them. 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 active restraints.
PASSIVE RESTRAINTS
The passive restraints are referred to as a supple-
mental restraint system because they were designed
and are intended to enhance the protection for the
occupants of the vehicleonlywhen used in conjunc-
tion with the seat belts. They are referred to as pas-
sive restraints because the vehicle occupants are not
required to do anything to make them operate; how-
ever, the vehicle occupants must be wearing their
seat belts in order to obtain the maximum safety
benefit from the factory-installed supplemental
restraint system.
The supplemental restraint system electrical cir-
cuits are continuously monitored and controlled by a
microprocessor and software contained within the
Airbag Control Module (ACM). An airbag indicator in
the ElectroMechanical Instrument Cluster (EMIC)
illuminates for about four 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 either solid or flashing at
any time other than during the bulb test, it indicates
that there is a problem 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 sensor(s). 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 front seat belt tensioners are provided
with a deployment signal by the ACM in conjunction
with the driver and passenger airbags.
During a frontal vehicle impact, the knee blockers
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 dis-
tribute the crash energy from the driver and the
front seat passenger to the structure of the instru-
ment panel. The seat belt tensioners remove the
slack from the front seat belts to provide 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 so
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 only a few
milliseconds. Within one to two seconds from the
moment of impact, the airbags are almost entirely
deflated. The times cited for these events are approx-
imations, 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
airbag system circuits or components, including the
seat belt tensioners, it stores a fault code or Diagnos-
tic Trouble Code (DTC) in its memory circuit and
sends a hard wired output to the EMIC to turn on
the airbag indicator. If the EMIC detects a problem
in the airbag indicator or airbag indicator circuit, the
cluster will flash the seatbelt indicator on and off.
Proper testing of the supplemental restraint system
components as well as the retrieval or erasure of a
DTC from the ACM requires the use of a diagnostic
scan tool. Refer to the appropriate diagnostic infor-
mation.
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.
8O - 4 RESTRAINTSVA

(1) Begin the cleanup by using a vacuum cleaner
to remove any residual powder from the vehicle inte-
rior. Clean from outside the vehicle and work your
way inside, so that you avoid kneeling or sitting on a
non-cleaned area.
(2) Be certain to vacuum the heater and air condi-
tioning outlets as well (Fig. 4). Run the heater and
air conditioner blower on the lowest speed setting
and vacuum any powder expelled from the outlets.
CAUTION: All damaged, faulty, or non-deployed
supplemental restraints which are replaced on vehi-
cles are to be handled and disposed of properly. If
an airbag unit or seat belt tensioner unit is faulty or
damaged and non-deployed, refer to the Hazardous
Substance Control System for proper disposal. Be
certain to dispose of all non-deployed and deployed
supplemental restraints in a manner consistent with
state, provincial, local and federal regulations.
(3) Next, remove the deployed supplemental
restraints from the vehicle. Refer to the appropriate
service removal procedures.
(4) You may need to vacuum the interior of the
vehicle a second time to recover all of the powder.
STANDARD PROCEDURE - VERIFICATION TEST
The following procedure should be performed using
a diagnostic scan tool to verify proper supplemental
restraint system operation following the service or
replacement of any supplemental restraint system
component.
WARNING: To avoid personal injury or death, on
vehicles equipped with airbags, disable the supple-
mental restraint system before attempting any
steering wheel, steering column, airbag, seat belt
tensioner, impact sensor, or instrument panel com-
ponent diagnosis or service. Disconnect and isolate
the battery negative (ground) cable, then wait two
minutes for the system capacitor to dischargebefore performing further diagnosis or service. This
is the only sure way to disable the supplemental
restraint system. Failure to take the proper precau-
tions could result in accidental airbag deployment.
(1) During the following test, the battery negative
cable remains disconnected and isolated, as it was
during the supplemental restraint system component
removal and installation procedures.
(2) Be certain that the diagnostic scan tool con-
tains the latest version of the proper diagnostic soft-
ware. Connect the diagnostic to the 16-way Data
Link Connector (DLC). The DLC is located on the
dash panel beneath the driver side lower edge of the
instrument panel, outboard of the steering column
(Fig. 5).
(3) Turn the ignition switch to the On position and
exit the vehicle with the diagnostic scan tool.
(4) Check to be certain that nobody is in the vehi-
cle, then reconnect the battery negative cable.
(5) Using the diagnostic, read and record the
active (current) Diagnostic Trouble Code (DTC) data.
(6) Next, use the diagnostic to read and record any
stored (historical) DTC data.
(7) If any DTC is found in Step 5 or Step 6, refer
to the appropriate diagnostic information.
(8) Use the diagnostic to erase the stored DTC
data. If any problems remain, the stored DTC data
will not erase. Refer to the appropriate diagnostic
information to diagnose any stored DTC that will not
erase. If the stored DTC information is successfully
erased, go to Step 9.
(9) Turn the ignition switch to the Off position for
about fifteen seconds, and then back to the On posi-
tion. Observe the airbag indicator in the instrument
cluster. It should illuminate for four seconds, and
then go out. This indicates that the supplemental
Fig. 4 Vacuum Heater and A/C Outlets - Typical
Fig. 5 16-Way Data Link Connector
1 - BOTTOM OF INSTRUMENT PANEL
2 - CONNECTOR COVER
3 - 16-WAY DATA LINK CONNECTOR
4 - DASH PANEL
5 - INSIDE HOOD RELEASE LEVER
VARESTRAINTS 8O - 7

RAIN SENSOR CONTROL MOD-
ULE
DESCRIPTION
The Rain Sensor Control Module (RSCM) is the
primary component of the automatic wiper system
(Fig. 11). The RSCM is secured with two screws and
nuts to a bracket located under the instrument panel
above the throttle pedal within the passenger com-
partment. The rectangular molded plastic housing of
the RSCM has an integral mounting tab on each side
and an integral connector receptacle on one end,
which contains the module terminal pins. These ter-
minal pins connect the RSCM to the vehicle electrical
system through a dedicated take out and connector of
the instrument panel wiring. Concealed and pro-
tected within the RSCM housing is the electronic cir-
cuitry of the module.
The RSCM cannot be repaired and, if damaged or
faulty, the entire module must be replaced.
OPERATION
The microprocessor-based Rain Sensor Control
Module (RSCM) is only used in vehicles equipped
with an optional automatic wiper system. The RSCM
monitors inputs from the ignition switch, the wiper
and washer switch circuitry of the multi-function
switch on the steering column, the park switch
within the wiper motor, and the rain sensor on the
inside of the windshield glass. Based upon these
inputs the RSCM sends the proper control outputs to
the wiper motor and the washer pump motor to pro-
vide all of the requested wiper and washer system
functions.The RSCM operates on battery current received
from a fuse in the fuse block on a fused ignition
switch output (run-start) circuit so that the RSCM
will operate whenever the ignition switch is in the
On or Start positions. The RSCM receives ground at
all times through its connection to the instrument
panel wire harness. It is important to note that the
default condition for the wiper system is automatic
wipers Off; therefore, if no input is received from the
rain sensor by the RSCM, the automatic wipers will
be disabled and the RSCM will default the wiper and
washer system to normal manual operation for con-
tinuous low or high speed wiper or washer mode.
The hard wired RSCM circuits may be diagnosed
using conventional diagnostic tools and methods.
However, conventional diagnostic methods may not
prove conclusive in the diagnosis of the internal cir-
cuitry of the RSCM. Refer to the appropriate wiring
information.
REMOVAL
WARNING: To avoid personal injury or death, on
vehicles equipped with airbags, disable the supple-
mental restraint system before attempting any
steering wheel, steering column, airbag, seat belt
tensioner, or instrument panel component diagno-
sis or service. Disconnect and isolate the battery
negative (ground) cable, then wait two minutes for
the system capacitor to discharge before perform-
ing further diagnosis or service. This is the only
sure way to disable the supplemental restraint sys-
tem. Failure to take the proper precautions could
result in accidental airbag deployment.
(1) Disconnect and isolate the battery negative
cable.
(2) Locate the rain sensor control module on a
bracket under the instrument panel above the throt-
tle pedal (Fig. 12).
Fig. 11 Rain Sensor Control Module
1 - RAIN SENSOR CONTROL MODULE
2 - CONNECTOR RECEPTACLE
3 - MOUNTING TAB (2)
VAWIPERS/WASHERS 8R - 15

8W-10 POWER DISTRIBUTION
Component Page
A/C Compressor Clutch Relay............. 8W-10-11
A/C Roof Auxiliary Fan Relay............. 8W-10-11
Airbag Control Module................. 8W-10-19
Automatic Temperature Control Module..... 8W-10-30
Auxiliary Heater Control................ 8W-10-23
Battery........................... 8W-10-6, 11
Battery Relay-Auxiliary.................. 8W-10-6
Beam Select Switch.............. 8W-10-12, 18, 28
Blower Motor Resistor Block........... 8W-10-12, 30
Boost Pressure Servomotor............... 8W-10-29
Brake Lamp Switch.................... 8W-10-20
Brake Lamp Switch 4 Pole............... 8W-10-20
Central Timer Module.................. 8W-10-16
Cigar Lighter........................ 8W-10-23
Circulation Pump Diode................. 8W-10-30
Circulation Pump Relay-Cabin Heater
Module........................ 8W-10-22, 30
Courtesy Lamp-Driver Door.............. 8W-10-24
Courtesy Lamp-Left Sliding Door.......... 8W-10-24
Courtesy Lamp-Passenger Door........... 8W-10-24
Courtesy Lamp-Right Sliding Door......... 8W-10-24
Crankcase Heater..................... 8W-10-29
D+ Relay No. 1..................... 8W-10-9, 10
Data Link Connector................... 8W-10-20
Daytime Running Lamp Relay-Left Side . . . 8W-10-10, 27
Daytime Running Lamp Relay-Right Side . . 8W-10-10, 27
Daytime Running Lamps Relay........... 8W-10-25
Dome Lamp......................... 8W-10-24
EGR Valve.......................... 8W-10-29
Engine Control Module....... 8W-10-12, 15, 19, 29, 34
Engine Control Relay............. 8W-10-12, 29, 34
Fog Lamp Relay...................... 8W-10-28
Fuel Pump....................... 8W-10-12, 30
Fuel Pump Relay................... 8W-10-12, 30
Fuse 1.................. 8W-10-6, 8, 9, 17, 18, 25
Fuse 2....................... 8W-10-6, 8, 11, 18
Fuse 3........................ 8W-10-6, 8, 9, 18
Fuse 4.............. 8W-10-8, 11, 13, 14, 17, 19, 26
Fuse 5.................... 8W-10-8, 9, 11, 14, 20
Fuse 6.................. 8W-10-7, 8, 11, 14, 21, 33
Fuse 7....................... 8W-10-7, 8, 14, 22
Fuse 8....................... 8W-10-7, 9, 12, 23
Fuse 9.................... 8W-10-8, 9, 10, 12, 21
Fuse 10..................... 8W-10-9, 10, 11, 25
Fuse 11........................ 8W-10-9, 10, 26
Fuse 12.......................... 8W-10-7, 27
Fuse 13.......................... 8W-10-7, 27
Fuse 14.......................... 8W-10-7, 28
Fuse 15........................ 8W-10-7, 13, 16
Fuse 16......................... 8W-10-12, 29
Fuse 17......................... 8W-10-12, 29
Fuse 18........................ 8W-10-9, 14, 19
Fuse 19......................... 8W-10-12, 30
Fuse 20........................ 8W-10-7, 12, 30
Fuse 21....................... 8W-10-12, 13, 30
Component Page
Fuse Block No. 1 . 8W-10-3, 11, 12, 13, 14, 15, 18, 19, 20,
21, 22, 23, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34
Fuse Block No. 2.............. 8W-10-10, 17, 25, 26
Fused Ignition Switch Run-Start Relay...... 8W-10-19
G200........................... 8W-10-31, 32
G202........................... 8W-10-10, 19
Generator........................... 8W-10-6
Glow Plug Control Module............... 8W-10-11
Hazard Warning Switch...... 8W-10-13, 14, 21, 31, 32
Headlamp Assembly-Left........ 8W-10-18, 26, 27, 28
Headlamp Assembly-Right....... 8W-10-17, 18, 27, 28
Headlamp Switch........... 8W-10-12, 18, 25, 26, 27
Horn.............................. 8W-10-22
Horn Relay......................... 8W-10-22
Ignition Switch.................. 8W-10-12, 13, 14
Instrument Cluster............... 8W-10-10, 18, 19
Interior Lamp-Left.................... 8W-10-24
Interior Lamp-Middle Front.............. 8W-10-24
Interior Lamp-Middle Rear.............. 8W-10-24
Interior Lamp-Rear No. 1................ 8W-10-24
Interior Lamp-Rear No. 2................ 8W-10-24
Interior Lamp-Right................... 8W-10-24
Lamp Relay-Left...................... 8W-10-26
Lamp Relay-Right..................... 8W-10-17
Mass Air Flow Sensor.................. 8W-10-22
Multi-Function Switch . . 8W-10-12, 13, 14, 18, 21, 25, 26,
27, 28, 31, 32, 33, 34
Optional Equipment Relay........... 8W-10-6, 7, 22
Oxygen Sensor....................... 8W-10-29
Power Distribution Center........... 8W-10-2, 6, 11
Radio........................... 8W-10-16, 23
Radio/Cellular Antenna................. 8W-10-16
Rain Sensor Control Module.............. 8W-10-33
Sentry Key Remote Entry Module.......... 8W-10-22
Shifter Assembly................... 8W-10-14, 19
Starter Motor..................... 8W-10-11, 15
Starter Motor Relay................... 8W-10-15
Tail Lamp Assembly-Left................ 8W-10-26
Tail Lamp Assembly-Right............... 8W-10-17
Trailer Tow Connector.................. 8W-10-17
Transmission Relay.................... 8W-10-22
Turn Signal Relay..................... 8W-10-31
Turn Signal Switch............... 8W-10-13, 26, 31
Turn Signal/Anti-Theft Alarm Relay-Left..... 8W-10-23
Turn Signal/Anti-Theft Alarm Relay-Right.... 8W-10-23
Washer On/Off Switch............... 8W-10-21, 34
Washer Pump Motor-Front............... 8W-10-34
Window Defogger Switch-Rear............ 8W-10-22
Wiper Motor-Front.................... 8W-10-33
Wiper On/Off Relay................. 8W-10-21, 33
Wiper Switch................... 8W-10-21, 32, 33
Wiper/Turn Signal/Engine Start Control
Module............. 8W-10-14, 21, 31, 32, 33, 34
VA8W-10 POWER DISTRIBUTION 8W - 10 - 1

8W-15 GROUND DISTRIBUTION
Component PageA/C Auxiliary Fan..........................8W-15-4
A/C Auxiliary Fan Relay......................8W-15-12
A/C Compressor Clutch Relay...................8W-15-30
A/C Roof Auxiliary Fan......................8W-15-30
A/C Roof Auxiliary Fan Relay...................8W-15-30
Additional Heat Exchanger....................8W-15-12
Additional Heat Exchanger Relay.................8W-15-12
Additional Heat Exchanger Switch................8W-15-24
Airbag Control Module.......................8W-15-11
Ash Receiver Lamp........................8W-15-22
Automatic Temperature Control Module.............8W-15-24
Auxiliary Heater Control.....................8W-15-24
Battery................................8W-15-8
Battery Relay-Auxiliary......................8W-15-11
Battery-Auxiliary..........................8W-15-11
Blower Motor-Front.........................8W-15-9
Brake Fluid Level Switch......................8W-15-8
Brake Wear Sensor-Left Front...................8W-15-8
Brake Wear Sensor-Left Rear...................8W-15-28
Brake Wear Sensor-Right Front..................8W-15-8
Brake Wear Sensor-Right Rear..................8W-15-28
CTEL Connector..........................8W-15-21
Cabin Heater Module........................8W-15-3
Center High Mounted Stop Lamp.................8W-15-6
Central Timer Module.......................8W-15-15
Cigar Lighter............................8W-15-22
Cigar Lighter Lamp........................8W-15-22
Circulation Pump..........................8W-15-9
Circulation Pump Relay-Cabin Heater Module..........8W-15-12
Clockspring.............................8W-15-10
Controller Antilock Brake....................8W-15-2, 28
Crankcase Heater..........................8W-15-4
Cylinder Lock Switch-Driver...................8W-15-10
D+ Relay No. 1...........................8W-15-12
D+ Relay No. 2...........................8W-15-14
Data Link Connector........................8W-15-10
Daytime Running Lamp Relay-Left Side.............8W-15-13
Daytime Running Lamp Relay-Right Side............8W-15-13
Daytime Running Lamps Relay..................8W-15-13
Differential Lock Solenoid Valve..................8W-15-2
Dome Lamp.............................8W-15-6
Dosing Pump............................8W-15-2
Engine Control Module.......................8W-15-7
Engine Coolant Level Switch....................8W-15-2
Fan Stage 1 Relay.........................8W-15-11
Fog Lamp Relay..........................8W-15-11
Fog Lamp Switch.........................8W-15-22
Fuel Pump.............................8W-15-19
Fuse Block No. 1..........................8W-15-7
Fused Ignition Switch Run-Start Relay..............8W-15-14
G100...............................8W-15-2, 3
G101.................................8W-15-4
G102.................................8W-15-4
G103.................................8W-15-4
G200...........................8W-15-6, 7, 8, 9, 10
G201................................8W-15-11
G202................8W-15-11, 12, 13, 14, 15, 16, 17, 18, 19
G203......................8W-15-20, 21, 22, 23, 24, 25
G300............................8W-15-26, 27, 28
G301................................8W-15-28
G302................................8W-15-28
G303................................8W-15-31
G304................................8W-15-31
G305..............................8W-15-29, 30
Glow Plug Control Module.....................8W-15-2
Hazard Warning Switch.......................8W-15-7
Headlamp Adjust Switch.....................8W-15-22
Headlamp Assembly-Left......................8W-15-3
Headlamp Assembly-Right.....................8W-15-4
Heated Seat Module-Driver....................8W-15-19
Heated Seat Module-Passenger..................8W-15-19
Heated Seat Switch-Driver....................8W-15-25
Heated Seat Switch-Passenger..................8W-15-25
Heater Timer-Auxiliary......................8W-15-24
High Idle Switch..........................8W-15-25
Hood Ajar Switch..........................8W-15-4
Horn Relay.............................8W-15-11
Horn Switch............................8W-15-10
Ignition Lock Switch........................8W-15-10
Instrument Cluster........................8W-15-10
Instrument Panel Socket.....................8W-15-20
Interior Lamp No. 1.........................8W-15-6
Interior Lamp No. 2.........................8W-15-6
Interior Lamp No. 3.........................8W-15-6Component PageInterior Lamp No. 4.........................8W-15-6
Interior Lamp No. 5.........................8W-15-6
Interior Lamp-Left.........................8W-15-6
Interior Lamp-Middle Front...................8W-15-5, 6
Interior Lamp-Middle Rear...................8W-15-5, 6
Interior Lamp-Rear No. 2......................8W-15-5
Interior Lamp-Right.......................8W-15-5, 6
Interior Light Switch.......................8W-15-21
Interior Lighting Connector.....................8W-15-6
Intrusion Sensor No. 1.......................8W-15-6
Intrusion Sensor No. 2.......................8W-15-6
Intrusion Sensor No. 3.......................8W-15-6
Kickdown Switch..........................8W-15-8
Lamp Relay-Left..........................8W-15-13
Lamp Relay-Right.........................8W-15-13
License Plate Lamp No. 1.....................8W-15-27
License Plate Lamp No. 2.....................8W-15-27
Locker Switch No. 1........................8W-15-20
Map/Reading Lamp Switch....................8W-15-21
Marker Lamp Connector......................8W-15-17
Marker Lamp No. 1-Left Front..................8W-15-16
Marker Lamp No. 1-Right Front.................8W-15-16
Marker Lamp No. 2-Left Front..................8W-15-16
Marker Lamp No. 2-Right Front.................8W-15-16
Marker Lamp-Left Center.....................8W-15-17
Marker Lamp-Left Rear......................8W-15-27
Marker Lamp-Right Center....................8W-15-17
Marker Lamp-Right Rear.....................8W-15-27
Master Door Lock Switch.....................8W-15-25
Metering Pump...........................8W-15-18
Multi-Function Switch.......................8W-15-7
Optional Equipment Relay....................8W-15-19
Panic Alarm Switch........................8W-15-20
Parking Brake Switch.......................8W-15-15
Power Mirror Motor-Driver....................8W-15-23
Power Mirror Motor-Passenger..................8W-15-23
Power Mirror Switch........................8W-15-23
Power Window Switch-Driver...................8W-15-23
Power Window Switch-Master...................8W-15-23
Radio................................8W-15-21
Rain Sensor............................8W-15-31
Rain Sensor Control Module..................8W-15-19, 31
Reading Lamp Connector......................8W-15-6
Rear Window Defogger Relay...................8W-15-14
Recirculated Air Solenoid Valve...................8W-15-9
Rollover Switch Assembly......................8W-15-3
Roof A/C Blower..........................8W-15-29
Roof A/C Blower Stage I And Ii Relay...............8W-15-29
Roof A/C Blower Stage I Relay..................8W-15-29
Roof A/C Blower Stage Ii Relay..................8W-15-29
Roof A/C Control Module.....................8W-15-28
Roof A/C Switch..........................8W-15-24
Roof Fan Switch..........................8W-15-21
Roof Thermotronic Control Module................8W-15-30
Seat Belt Switch..........................8W-15-15
Security System Module......................8W-15-15
Sentry Key Remote Entry Module.................8W-15-7
Shifter Assembly..........................8W-15-20
Siren.................................8W-15-9
Steering Angle Sensor........................8W-15-7
TCS Switch.............................8W-15-25
Tail Lamp Assembly-Left.....................8W-15-26
Tail Lamp Assembly-Right.....................8W-15-26
Thermotronic Diode........................8W-15-30
Time Delay Relay.........................8W-15-17
Towing/Intrusion Sensor On/Off Switch..............8W-15-22
Trailer Tow Connector.......................8W-15-28
Trailer Tow Control Module....................8W-15-19
Transmission Control Module...................8W-15-19
Transmission Relay........................8W-15-19
Turn Signal No. 1-Left Front....................8W-15-3
Turn Signal No. 1-Right Front...................8W-15-4
Turn Signal No. 2-Left Front....................8W-15-3
Turn Signal No. 2-Right Front...................8W-15-4
Warm Air Auxiliary Heater Assembly...............8W-15-18
Washer Pump Motor-Front.....................8W-15-4
Water Cycle Valve..........................8W-15-9
Window Defogger Module-Rear..................8W-15-15
Window Defogger Switch-Rear..................8W-15-20
Window Defogger-Left Rear....................8W-15-26
Window Defogger-Right Rear...................8W-15-26
Wiper Motor-Front.........................8W-15-9
Wiper/Turn Signal/Engine Start Control Module.........8W-15-7
VA8W-15 GROUND DISTRIBUTION 8W - 15 - 1

motor, while relay 2 when activated, sends power
directly to the blower motor.
The rear blower motor switch cannot be repaired
and, if faulty or damaged, it must be replaced.
DIAGNOSIS AND TESTING
REAR BLOWER MOTOR SWITCH
Before testing the rear blower motor switch, verify
that the front A/C system is functional by performing
the ATC Fuction Test using the DRBIIItscan tool.
Use a volt/ohmmeter to test the rear blower motor
switch. For circuit descriptions and diagrams, refer
to the appropriate wiring information. The wiring
information includes wiring diagrams, proper wire
and connector repair procedures, details of wire har-
ness routing and retention, connector pin-out infor-
mation and location views for the various wire
harness connectors, splices and grounds.
WARNING: To avoid personal injury or death, on
vehicles equipped with airbags, disable the supple-
mental restraint system before attempting any
steering wheel, steering column, airbag, seat belt
tensioner, impact sensor, or instrument panel com-
ponent diagnosis or service. Disconnect and isolate
the battery negative (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 disable the supplemental
restraint system. Failure to take the proper precau-
tions could result in accidental airbag deployment.
(1) Disconnect and isolate the battery negative
cable.
(2) Unplug the wire harness connector from the
rear blower motor switch.
(3) Check for continuity between terminal 10 and
terminals 1, 7 and 4 of the blower motor switch. In
all instances, there should be continuity.
NOTE: To check the switch's internal circuits, con-
nect the negative lead of the ohmmeter to terminal
10 and the positive ohmmeter lead to terminals 1, 7
and 4. To check the switch's integral light emitting
diodes, reverse the ohmmeter leads.
(4) Check for continuity between the rear blower
motor switch terminals 3 and 7 as you move the
blower motor switch to each of the two speed posi-
tions, and the Off position. There should be continu-
ity in only one blower motor switch speed position.
(5) Check for continuity between the rear blower
motor switch terminals 4 and 8 as you move the
blower motor switch to each of the two speed posi-
tions, and the Off position. There should be continu-ity in only the other blower motor switch speed
position.
(6) If OK, test and repair the rear blower motor
switch wire harness circuits. If not OK, replace the
faulty rear blower motor switch.
REMOVAL
WARNING: To avoid personal injury or death, on
vehicles equipped with airbags, disable the supple-
mental restraint system before attempting any
steering wheel, steering column, airbag, seat belt
tensioner, impact sensor, or instrument panel com-
ponent diagnosis or service. Disconnect and isolate
the battery negative (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 disable the supplemental
restraint system. Failure to take the proper precau-
tions could result in accidental airbag deployment.
NOTE: The rear A/C blower motor switch is used on
vehicles with the optional rear A/C system.
(1) Disconnect and isolate the negative battery
cable.
(2) Remove the accessory switch panel from the
instrument panel (Refer to 23 - BODY/INSTRU-
MENT PANEL/ACCESSORY SWITCH BEZEL -
REMOVAL).
(3) Disconnect the wire harness connector from the
rear A/C blower motor switch (Fig. 14).
(4) Disengage the retaining tabs and remove the
rear A/C blower motor switch from the accessory
switch panel.
24 - 36 CONTROLS - REARVA