AUTO TEMP CONTROL C3-4WAY
CAV CIRCUIT FUNCTION
1 F600 20LB/PK PROTECTED IGNITION
2 D40 20WT/LB KDB NO. 2 CLOCK
3 C905 20BR/LB SENSOR RETURN
4 D18 20WT/YL KDB NO. 2 DATA
AUTOMATIC DAY/NIGHT MIRROR (PREMIUM/LUXURY) - BLACK 7 WAY
CAV CIRCUIT FUNCTION
1 F503 20BK/PK FUSED IGNITION SWITCH OUTPUT (RUN)
2 Z113 20BK GROUND
3 L1 20BK/WT BACK-UP LAMP FEED
4 P112 20BK/OR (EXCEPT EXPORT) MIRROR B(+)
5 P114 20BK/LB (EXCEPT EXPORT) MIRROR B(-)
6- -
7 L24 20BK/GY (EXCEPT EXPORT) AUTOMATIC HEADLAMP SWITCH SENSOR
AUTOSTICK SWITCH (EXCEPT EXPORT) - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 T55 20YL/VT AUTOSTICK/OVERDRIVE OFF MUX INPUT
2 Z65 20BK/YL GROUND
BACK-UP LAMP SWITCH (MTX) - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 T2 18DG/WT TRS REVERSE SENSE
2 Z252 18BK/WT GROUND
8W - 80 - 10 8W-80 CONNECTOR PIN-OUTSRS
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CD CHANGER-8WAY
CAV CIRCUIT FUNCTION
1 X40 24GY/WT AUDIO OUT RIGHT
2 E14 18OR/TN PANEL LAMPS DRIVER
3 D25 20WT/VT (EXCEPT EXPORT) PCI BUS
3 D25 20VT/YL (EXPORT) PCI BUS
4 X112 20RD IGNITION SWITCH OUTPUT
5 X41 20DG/WT AUDIO OUT LEFT
6 Z140 18BK/OR GROUND
7 Z141 18BK/TN GROUND
8 X160 20GY/YL B(+)
CENTER DOME LAMP (BASE/HIGHLINE) - GRAY 3 WAY
CAV CIRCUIT FUNCTION
1 M22 20YL/OR COURTESY LAMPS DRIVER
2 Z327 20BK/OR GROUND
3 M27 20YL/LB (EXCEPT BASE) READING LAMPS DRIVER
CENTER HIGH MOUNTED STOP LAMP - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 Z350 20BK/TN GROUND
2 L50 18WT/TN BRAKE LAMP SWITCH OUTPUT
CLOCKSPRING C1 - WHITE 6 WAY
CAV CIRCUIT FUNCTION
1 X920 22GY/OR RADIO CONTROL MUX RETURN
2 X20 22GY/WT RADIO CONTROL MUX
3 X3 22DG/VT HORN SWITCH SENSE
4 V37 22VT SPEED CONTROL SWITCH SIGNAL
5 K900 20DB/DG SPEED CONTROL SWITCH GROUND
6- -
RS8W-80 CONNECTOR PIN-OUTS8W-80-51
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CLOCKSPRING C2 - YELLOW 4 WAY
CAV CIRCUIT FUNCTION
1 R61 18LG/DB DRIVER SQUIB 2 LINE 1
2 R63 18LG/WT DRIVER SQUIB 2 LINE 2
3 R43 18LG/BR DRIVER SQUIB 1 LINE 1
4 R45 18LG/OR DRIVER SQUIB 1 LINE 2
CLOCKSPRING C3 - BLACK 4 WAY
CAV CIRCUIT FUNCTION
1- -
2 Z23 20BK/VT LEFT SPEED CONTROL SWITCH GROUND
2 Z23 20BK/VT RIGHT SPEED CONTROL SWITCH GROUND
3 V37 20VT (EXCEPT 2.4L) SPEED CONTROL SWITCH SIGNAL
3 V37 20VT (2.4L) S/C SWITCH SIGNAL
3 V37 20VT (2.4L) S/C SWITCH SIGNAL
3 V37 20VT (EXCEPT 2.4L) SPEED CONTROL SWITCH SIGNAL
4 X3 20DG/VT HORN SWITCH SENSE
CLOCKSPRING C4 - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 X20 20RD/BK RADIO CONTROL MUX
2 X920 20RD/DB RADIO CONTROL MUX RETURN
CLUTCH PEDAL INTERLOCK SWITCH (MTX) - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 T141 20YL/OR FUSED IGNITION SWITCH OUTPUT (START)
2 T751 20YL (DIESEL) FUSED IGNITION SWITCH OUTPUT (START)
2 Z429 20BK/OR (GAS) GROUND
CLUTCH PEDAL UPSTOP SWITCH (DIESEL) - RED 2 WAY
CAV CIRCUIT FUNCTION
1 K119 20DB/LG CLUTCH PEDAL UPSTOP SWITCH SENSE
2 Z150 20BK/LG GROUND
8W - 80 - 52 8W-80 CONNECTOR PIN-OUTSRS
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REAR AUTO TEMP CONTROL SWITCH (3 ZONE ATC) - BLACK 13 WAY
CAV CIRCUIT FUNCTION
1 F504 20GY/PK FUSED IGNITION SWITCH OUTPUT (RUN)
2 Z27 18BK/DG GROUND
3 D22 20WT/TN (SWB) KDB CLOCK
3 D22 22WT/TN (LWB) KDB CLOCK
4 D17 20WT/DG (SWB) KDB DATA
4 D17 22WT/DG (LWB) KDB DATA
5 E10 20OR/DG PANEL LAMPS DRIVER
6- -
7- -
8- -
9- -
10 - -
11 - -
12 - -
13 - -
REAR BLOWER FRONT CONTROL SWITCH (3 ZONE MTC) - BLACK 8 WAY
CAV CIRCUIT FUNCTION
1- -
2 Z440 12BK/DG GROUND
3- -
4 C153 12DB/BR REAR BLOWER MOTOR HIGH
5- -
6 C152 16LB/LG REAR BLOWER MOTOR MED
7 C151 18LB/DG REAR BLOWER MOTOR LOW
8 C50 12DB/OR REAR BLOWER FRONT CONTROL FEED
REAR BLOWER MOTOR POWER MODULE C1 (3 ZONE ATC) - RED/BLACK 4 WAY
CAV CIRCUIT FUNCTION
1 C51 12DB/BR FUSED REAR BLOWER MOTOR RELAY OUTPUT
1 C51 18DB/BR FUSED REAR BLOWER MOTOR RELAY OUTPUT
2 C59 18DB/LB BLOWER MOTOR CONTROL
3 Z135 12BK/LB GROUND
4- -
RS8W-80 CONNECTOR PIN-OUTS8W - 80 - 115
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CONNECTOR NAME/NUMBER COLOR LOCATION FIG.
C317 BK Right Sliding Door 31
C318 (Trailer Tow) BK Left Quarter N/S
C319 Left Side Liftgate N/S
C320 DKGY Driver Power Seat on Seat Harness N/S
C321 DKGY Under Passenger Seat N/S
C322 BK On Seat Harness to Body 31
C324 BK Left Sliding Door N/S
C325 BK Right Sliding Door 31
C326 YL At Driver Side Airbag N/S
C327 YL At Passenger Side Airbag N/S
C328 Front of Left Quarter 46
C329 (Diesel) BK Near Fuel Tank 33
C330 (Diesel) LTGY Left Rear Engine Compartment N/S
C331 (Diesel) BK Left Rear Engine Compartment N/S
Cabin Heater RHD) At Heater N/S
Cabin Heater Assist C1 (Diesel) BK Top of Engine 15, 16
Cabin Heater Assist C2 (Diesel) BK Top of Engine 15, 16
Camshaft Position Sensor (Gas) BK Rear of Cylinder Head
Right Side of Engine11
Camshaft Position Sensor
(Diesel)BK Rear of Cylinder Head 15, 16
CD Changer Behind CD Changer N/S
Center Dome Lamp GY At Lamp N/S
Center High Mounted Stop Lamp BK At Lamp 48
Clockspring - C1 WT Steering Column 19, 20, 21, 22, 30
Clockspring - C2 YL Steering Column 19, 20, 21, 22, 30
Clockspring - C3 BK Steering Column N/S
Clockspring - C4 BK Steering Column N/S
Clockspring - C5 YL Steering Column N/S
Clutch Pedal Interlock Switch
(Diesel)RD At Switch/Driver Side 41
Clutch Pedal Upstop Switch
(Diesel)BK At Switch/Driver Side 41
Controller Anti-Lock Brake BK Right Side of Engine Compartment 11, 16, 17, 18
Crank Case Ventilation Heater
(Diesel)BK Top of Cylinder Head 15
Crankshaft Position Sensor
(Diesel)BK Rear of Engine 16
Crankshaft Position Sensor (Gas) BK Rear of Engine 13, 17
Data Link Connector WT Lower Instrument Panel Near
Steering Column40, 41
Dosing Pump BK Top of Engine N/S
Driver Airbag Squib1 BN Steering Column N/S
Driver Airbag Squib2 BK Steering Column N/S
RS8W-91 CONNECTOR/GROUND/SPLICE LOCATION8W-91-3
CONNECTOR/GROUND/SPLICE LOCATION (Continued)
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to the fused B(+) fuse in the IPM that feeds the
accessories when the relay is energized by the igni-
tion switch. There should be continuity between the
IPM cavity for relay terminal 87 and the fused B(+)
fuse in the IPM at all times. If OK, go to Step 4. If
not OK, repair the open fused B(+) circuit to the IPM
fuse as required.
(4) The coil ground terminal (85) is connected to
the electromagnet in the relay. It receives battery
feed to energize the accessory relay when the ignition
switch is in the Accessory or On positions. Turn the
ignition switch to the On position. Check for battery
voltage at the fused ignition switch output (acc/run)
circuit cavity for relay terminal 85 in the IPM recep-
tacle for the accessory relay. If OK, go to Step 5. If
not OK, repair the open fused ignition switch output
(acc/run) circuit to the ignition switch as required.
(5) The coil battery terminal (86) is connected to
the electromagnet in the relay. The IPM cavity for
this terminal should have continuity to ground at all
times. If not OK, repair the open ground circuit to
ground as required.
REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Remove the Integrated Power Module (IPM)
cover from the IPM.
(3) Remove the accessory relay from the IPM.
Refer to the IPM cover for relay location.
INSTALLATION
(1) Position the accessory relay in the proper
receptacle in the Integrated Power Module (IPM).
(2) Push in firmly on the accessory relay until the
terminals are fully seated in the terminal cavities in
the IPM receptacle.
(3) Install the IPM cover.
(4) Reconnect the battery negative cable.
INTEGRATED POWER MODULE
DESCRIPTION
The Integrated Power Module (IPM) is a combina-
tion of the Power Distribution Center (PDC) and the
Front Control Module (FCM). The IPM is located in
the engine compartment, next to the battery on this
model (Fig. 2). The power distribution center mates
directly with the Front Control Module (FCM) to
form the IPM Fuse and Relay Center. The power dis-
tribution center (PDC) is a printed circuit board
based module that contains fuses and relays, while
the front control module contains the electronics con-
trolling the IPM and other functions. This IPM con-
nects directly to the battery positive via a four pinconnector. The ground connection is via two other
connectors. The IPM provides the primary means of
voltage distribution and protection for the entire
vehicle.
The molded plastic IPM housing includes a base
and cover. The IPM cover is easily opened or removed
for service access by squeezing the two marked cover
latches and has a fuse and relay layout map integral
to the inside surface of the cover. This IPM housing
base and cover are secured in place by an IPM
mounting bracket. This mounting bracket is designed
to allow the IPM to rotate counter-clockwise once the
locking tab is disengaged. The IPM mounting bracket
is secured in place by bolts threaded into the left
front wheel house.
Replaceable components of the IPM assembly are
broken down into the following components: the
Power Distribution Center (PDC) (without fuses or
relays), the IPM cover, the Front Control Module
(FCM), the IPM mounting bracket, IPM bracket
retaining clips and the IPM assembly which includes
the power distribution center, the cover and FCM.
Refer to the Front Control Module in the Elec-
tronic Control Module sectionof this service
manual for information on the FCM.
OPERATION
All of the current from the battery and the gener-
ator output enters the Integrated Power Module
(IPM) via a four- pin connector on the bottom of the
Fig. 2 BATTERY THERMAL GUARD
1 - BATTERY THERMAL GUARD
2 - INTEGRATED POWER MODULE
3 - FRONT CONTROL MODULE
RS8W-97 POWER DISTRIBUTION SYSTEM8W-97-3
ACCESSORY RELAY (Continued)
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module. The IPM cover is unlatched and opened or
removed to access the fuses or relays. Internal con-
nections of all of the power distribution center cir-
cuits is accomplished by a combination of bus bars
and a printed circuit board. Refer to the Wiring sec-
tion of the service manual for complete IPM circuit
schematics.
REMOVAL
(1) Disconnect the negative and positive battery
cables.
(2) Remove the battery thermal guard from the
vehicle. Refer to the Battery section for the proce-
dure.
(3) Remove the battery from the vehicle. Refer to
the Battery section for the procedure.
(4) Using a flat-bladed screwdriver, twist the Inte-
grated Power Module (IPM) bracket retaining latch
outward to free the intelligent power module from its
mounting bracket (Fig. 3).
(5) Rotate the IPM counter-clockwise to access and
disconnect the various electrical connectors (Fig. 4).
(6) Free the IPM from its mounting bracket by
removing the IPM bracket clips from the hinge. A
screwdriver slipped up from under the hinge will free
the clips.
INSTALLATION
(1) Snap the left side of the Integrated Power Mod-
ule (IPM) housing in its mounting bracket and con-
nect the various electrical connectors. Care must be
taken that the Connector Positive Assurance (CPA)on the five-pin B+ connector is positively engaged to
prevent generating a Diagnostic Trouble Code (DTC).
NOTE: IPM electrical connectors are color coded to
ease location reference.
(2) Being certain no wires are stressed or pinched,
rotate the IPM clock-wise until secured in mounting
bracket. An audible click may be heard.
(3) Install the battery in the vehicle. Refer to the
Battery section for the procedure.
(4) Install the battery thermal guard in the vehi-
cle. Refer to the Battery section for the procedure.
(5) Connect the negative and positive battery
cables.
(6) Using a diagnostic scan tool, check for any
stored diagnostic trouble codes and correct, check
that all vehicle options are operational before return-
ing the vehicle to service.
IOD FUSE
DESCRIPTION
All vehicles are equipped with an Ignition-Off
Draw (IOD) fuse that is removed from its normal
cavity in the Integrated Power Module (IPM) when
the vehicle is shipped from the factory. Dealer per-
sonnel are to remove the IOD fuse from the storage
location and install it into the IPM fuse cavity
marked IOD as part of the preparation procedures
performed just prior to new vehicle delivery.
Fig. 3 RELEASING INTEGRATED POWER MODULE
FROM ITS MOUNTING BRACKET
Fig. 4 DISCONNECTING IPM
1 - INTEGRATED POWER MODULE FUSE & RELAY CENTER
8W - 97 - 4 8W-97 POWER DISTRIBUTION SYSTEMRS
INTEGRATED POWER MODULE (Continued)
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The IPM has a molded plastic cover that can be
removed to provide service access to all of the fuses
and relays in the IPM. An integral latch and hinges
are molded into the IPM cover for easy removal. A
fuse layout map is integral to the underside of the
IPM cover to ensure proper fuse and relay identifica-
tion. The IOD fuse is a 20 ampere blade-type mini
fuse and, when removed, it is stored in a fuse cavity
adjacent to the washer fuse within the IPM.
OPERATION
The term ignition-off draw identifies a normal con-
dition where power is being drained from the battery
with the ignition switch in the Off position. The IOD
fuse feeds the memory and sleep mode functions for
some of the electronic modules in the vehicle as well
as various other accessories that require battery cur-
rent when the ignition switch is in the Off position,
including the clock. The only reason the IOD fuse is
removed is to reduce the normal IOD of the vehicle
electrical system during new vehicle transportation
and pre-delivery storage to reduce battery depletion,
while still allowing vehicle operation so that the
vehicle can be loaded, unloaded and moved as needed
by both vehicle transportation company and dealer
personnel.
The IOD fuse is removed from the IPM fuse cavity
when the vehicle is shipped from the assembly plant.
Dealer personnel must install the IOD fuse when the
vehicle is being prepared for delivery in order to
restore full electrical system operation. Once the
vehicle is prepared for delivery, the IOD function of
this fuse becomes transparent and the fuse that has
been assigned the IOD designation becomes only
another Fused B(+) circuit fuse. The IOD fuse serves
no useful purpose to the dealer technician in the ser-
vice or diagnosis of any vehicle system or condition,
other than the same purpose as that of any other
standard circuit protection device.
The IOD fuse can be used by the vehicle owner as
a convenient means of reducing battery depletion
when a vehicle is to be stored for periods not to
exceed about thirty days. However, it must be
remembered that removing the IOD fuse will not
eliminate IOD, but only reduce this normal condition.
If a vehicle will be stored for more than about thirty
days, the battery negative cable should be discon-
nected to eliminate normal IOD; and, the battery
should be tested and recharged at regular intervals
during the vehicle storage period to prevent the bat-
tery from becoming discharged or damaged. Refer to
Battery Systemfor additional service information.
REMOVAL
(1) Turn the ignition switch to the Off position.(2) Unlatch and open the cover of the intelligent
power module.
(3) Remove the IOD fuse from fuse location
markedIODof the Integrated Power Module (IPM).
(4) Store the removed IOD fuse by installing it in
the unused fuse storage markedSPAREof the IPM.
(5) Close and latch the IPM.
INSTALLATION
(1) Be certain the ignition switch is in the Off posi-
tion.
(2) Unlatch and open the cover of the Integrated
Power Module (IPM).
(3) Use a thumb to press the IOD fuse firmly down
into IPM fuse cavity markedIOD.
(4) Close and latch the IPM cover.
POWER OUTLET
DESCRIPTION
Accessory power outlets are standard equipment on
this model. Two power outlets are installed in the
instrument panel center lower bezel, which is located
near the bottom of the instrument panel center stack
area. Two additional power outlets are also incorpo-
rated into the vehicle, one on the left rear C-pillar
trim and the other in the center console, if equipped.
The power outlets bases are secured by a snap fit in
the appropriate bezels. A hinged plug flips closed to
conceal and protect the power outlet base when the
power outlet is not being used.
The power outlet receptacle unit and the power
outlet plugs are each available for service replace-
ment.
OPERATION
The power outlet base or receptacle shell is con-
nected to ground, and an insulated contact in the
bottom of the shell is connected to battery current.
The power outlet on the instrument panel marked
with a battery receives battery voltage from a fuse in
the Integrated Power Module (IPM) at all times. The
other power outlet on the instrument panel marked
with a key receives battery voltage only when the
key is in the on position.
The power outlet located in the center console
receives battery voltage all the time when positioned
between thefront seatsand key-on voltage when
positioned between therear seats. The power outlet
located on the C-pillar receives battery voltage only
when the key is in the on position.
RS8W-97 POWER DISTRIBUTION SYSTEM8W-97-5
IOD FUSE (Continued)
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