ECU DODGE RAM 1999 Service Workshop Manual
[x] Cancel search | Manufacturer: DODGE, Model Year: 1999, Model line: RAM, Model: DODGE RAM 1999Pages: 1691, PDF Size: 40.34 MB
Page 565 of 1691
Melted, not affecting
performance ............ 2 ........ (1) Suggest replacement.
Terminal broken ......... A .. Require repair or replacement.
Terminal burned, affecting
performance ............ A ........... ( 1) Require repair or
replacement.
Terminal burned, not
affecting performance .. 2 .. Suggest repair or replacement.
Terminal corroded,
affecting performance .. A .. Require repair or replacement.
Terminal corroded, not
affecting performance .. 2 .. Suggest repair or replacement.
Terminal loose, affecting
performance ............ B .. Require repair or replacement.
Terminal loose, not
affecting performance .. 1 .. Suggest repair or replacement.
( 1) - Determine cause and correct prior to repair or
replacement of part.
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FUSES, FUSIBLE LINKS AND CIRCUIT BREAKERS
FUSE, FUSIBLE LINK AND CIRCUIT BREAKER INSPECTION \
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Condition Code Procedure
Application incorrect ... B ............ Require replacement.
Blown ................... A ........ ( 1) Require replacement.
Corroded, affecting
performance ............ A .. Require repair or replacement.
Corroded, not affecting
performance ............ 2 .. Suggest repair or replacement.
Cracked, affecting
performance ............ A .. Require repair or replacement.
Cracked, not affecting
performance ............ 1 .. Suggest repair or replacement.
Inoperative ............. A ........ ( 2) Require replacement.
Insulation damaged,
conductors exposed ..... A .. Require repair or replacement.
Insulation damaged,
conductors not exposed . 1 ............ Suggest replacement.
Missing ................. C ............ Require replacement.
Routed incorrectly ...... B ................. Require repair.
Secured incorrectly ..... B ................. Require repair.
Terminal broken ......... A .. Require repair or replacement.
Terminal burned, affecting
performance ............ A ........... ( 1) Require repair or
replacement.
Terminal burned, not
affecting performance .. 2 .. Suggest repair or replacement.
Terminal corroded,
affecting performance .. A .. Require repair or replacement.
Terminal corroded, not
affecting performance .. 2 .. Suggest repair or replacement.
Terminal loose, affecting
performance ............ B .. Require repair or replacement.
Terminal loose, not
affecting performance .. 1 .. Suggest repair or replacement.
( 1) - Determine cause and correct prior to repair or
replacement of part.
( 2) - Inoperative includes intermittent operation.
Page 578 of 1691
![DODGE RAM 1999 Service Workshop Manual SEAT HEATERS
See
HEATING ELEMENTS (DEFROSTERS, DEFOGGERS, ELECTRIC HEATERS AND SEATS) .
SECURITY ALARM SENSORS
SECURITY ALARM SENSOR INSPECTION \](/img/12/56915/w960_56915-577.png "DODGE RAM 1999 Service Workshop Manual SEAT HEATERS
See
HEATING ELEMENTS (DEFROSTERS, DEFOGGERS, ELECTRIC HEATERS AND SEATS) .
SECURITY ALARM SENSORS
SECURITY ALARM SENSOR INSPECTION \")
SEAT HEATERS
See
HEATING ELEMENTS (DEFROSTERS, DEFOGGERS, ELECTRIC HEATERS AND SEATS) .
SECURITY ALARM SENSORS
SECURITY ALARM SENSOR INSPECTION \
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Condition Code Procedure
Attaching hardware
missing ................ C .......... Require replacement of
hardware.
Attaching hardware threads
damaged ................ A ... Require repair or replacement
of hardware.
Attaching hardware threads
stripped (threads
missing) ............... A ... Require repair or replacement
of hardware.
Connector broken ........ A .. Require repair or replacement.
Connector melted ........ A ........... ( 1) Require repair or
replacement.
Connector missing ....... C ............ Require replacement.
Inoperative ............. B ........... ( 2) Require repair or
replacement. Further
inspection required.
Missing ................. C ............ Require replacement.
Resistance out of
specification .......... B .. Require repair or replacement.
Terminal broken ......... A .. Require repair or replacement.
Terminal burned, affecting
performance ............ A ........... ( 1) Require repair or
replacement.
Terminal burned, not
affecting performance .. 2 .. Suggest repair or replacement.
Terminal corroded,
affecting performance .. A .. Require repair or replacement.
Terminal corroded, not
affecting performance .. 2 .. Suggest repair or replacement.
Terminal loose, affecting
performance ............ B .. Require repair or replacement.
Terminal loose, not
affecting performance .. 1 .. Suggest repair or replacement.
Threads damaged ......... A .. Require repair or replacement.
Threads stripped (threads
missing) ............... A ............ Require replacement.
Wire lead conductors
exposed ................ B .. Require repair or replacement.
Wire lead corroded ...... A .. Require repair or replacement.
Wire lead open .......... A .. Require repair or replacement.
Wire lead shorted ....... A .. Require repair or replacement.
( 1) - Determine cause and correct prior to repair or
replacement of part.
( 2) - Inoperative includes intermittent operation or out of OEM
specification.
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SIRENS
Page 593 of 1691
![DODGE RAM 1999 Service Workshop Manual WIRING HARNESSES AND CONNECTORS
WIRING HARNESS AND CONNECTOR INSPECTION \
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WIRING HARNESS AND CONNECTOR INSPECTION \
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WIRING HARNESSES AND CONNECTORS
WIRING HARNESS AND CONNECTOR INSPECTION \
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Condition Code Procedure
Application incorrect ... B .. Require repair or replacement.
Attaching hardware
broken ................. A ... Require repair or replacement
of hardware.
Attaching hardware
missing ................ C .......... Require replacement of
hardware.
Attaching hardware not
functioning ............ A ... Require repair or replacement
of hardware.
Connector broken ........ A .. Require repair or replacement.
Connector (Weatherpack
type) leaking .......... A .. Require repair or replacement.
Connector melted ........ A ........... ( 1) Require repair or
replacement.
Connector missing ....... C ............ Require replacement.
Insulation damaged,
conductors exposed ..... A .. Require repair or replacement.
Insulation damaged,
conductors not exposed . 1 ............ Suggest replacement.
Open .................... A .. Require repair or replacement.
Protective shield
(conduit) melted ....... 2 ........... ( 1) Suggest repair or
replacement.
Protective shield
(conduit) missing ...... 2 .. Suggest repair or replacement.
Resistance (voltage drop)
out of specification ... A .. Require repair or replacement.
Routed incorrectly ...... B ................. Require repair.
Secured incorrectly ..... B ................. Require repair.
Shorted ................. A .. Require repair or replacement.
Terminal broken ......... A .. Require repair or replacement.
Terminal burned, affecting
performance ............ A ........... ( 1) Require repair or
replacement.
Terminal burned, not
affecting performance .. 2 .. Suggest repair or replacement.
Terminal corroded,
affecting performance .. A .. Require repair or replacement.
Terminal corroded, not
affecting performance .. 2 .. Suggest repair or replacement.
Terminal loose, affecting
performance ............ B .. Require repair or replacement.
Terminal loose, not
affecting performance .. 1 .. Suggest repair or replacement.
Voltage drop out of
specification .......... A .. Require repair or replacement.
( 1) - Determine cause and correct prior to repair or
replacement of part.
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Page 725 of 1691
![DODGE RAM 1999 Service Workshop Manual BATTERY CABLE, WIRE AND CONNECTOR INSPECTION \
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Condition](/img/12/56915/w960_56915-724.png "DODGE RAM 1999 Service Workshop Manual BATTERY CABLE, WIRE AND CONNECTOR INSPECTION \
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BATTERY CABLE, WIRE AND CONNECTOR INSPECTION \
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Condition Code Procedure
Application incorrect ... B .. Require repair or replacement.
Attaching hardware
broken ................. A ... Require repair or replacement
of hardware.
Attaching hardware
missing ................ C .......... Require replacement of
hardware.
Attaching hardware not
functioning ............ A ... Require repair or replacement
of hardware.
Connector broken ........ A .. Require repair or replacement.
Connector melted ........ A ........... (1) Require repair or
replacement.
Connector missing ....... C ............ Require replacement.
Insulation damaged,
conductors exposed ..... A ........... ( 2) Require repair or
replacement.
Insulation damaged,
conductors not exposed . 1 ............ Suggest replacement.
Open .................... A .. Require repair or replacement.
Protective shield
(conduit) melted ....... 2 ........... ( 1) Suggest repair or
replacement.
Protective shield
(conduit) missing ...... 2 .. Suggest repair or replacement.
Resistance (voltage drop)
out of specification ... A .. Require repair or replacement.
Routed incorrectly ...... B ................. Require repair.
Secured incorrectly ..... B ................. Require repair.
Shorted ................. A .. Require repair or replacement.
Terminal broken ......... A .. Require repair or replacement.
Terminal burned, affecting
performance ............ A ........... ( 1) Require repair or
replacement.
Terminal burned, not
affecting performance .. 2 .. Suggest repair or replacement.
Terminal corroded,
affecting performance .. A .. Require repair or replacement.
Terminal corroded, not
affecting performance .. 2 .. Suggest repair or replacement.
Terminal loose, affecting
performance ............ B .. Require repair or replacement.
Terminal loose, not
affecting performance .. 1 .. Suggest repair or replacement.
Voltage drop out of
specification .......... A .. Require repair or replacement.
( 1) - Determine cause and correct prior to repair or
replacement of part.
( 2) - Exposed conductor at replacement (aftermarket) terminal
end does not require repair or replacement.
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BATTERY CONNECTORS
See BATTERY CABLES, WIRES AND CONNECTORS .
BATTERY TRAYS AND HOLD DOWN HARDWARE
Page 726 of 1691
![DODGE RAM 1999 Service Workshop Manual BATTERY TRAY AND HOLD DOWN HARDWARE INSPECTION \
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BATTERY TRAY AND HOLD DOWN HARDWARE INSPECTION \
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Condition Code Procedure
Battery improperly
secured ................ 2 ................. Suggest repair.
Bent, affecting
performance ............ A .. Require repair or replacement.
Bent, not affecting
performance ............ .. ....... No service suggested or
required.
Broken, affecting
performance ............ A .. Require repair or replacement.
Broken, not affecting
performance ............ .. ....... No service suggested or
required.
Corroded, affecting
performance ............ A .. Require repair or replacement.
Corroded, not affecting
performance ............ 2 .. Suggest repair or replacement.
Cracked, affecting
performance ............ A .. Require repair or replacement.
Cracked, not affecting
performance ............ 1 .. Suggest repair or replacement.
Missing ................. C ............ Require replacement.
Threads damaged ......... A .. Require repair or replacement.
Threads stripped (threads
missing) ............... A ............ Require replacement.
Water drain clogged ..... A ................. Require repair.
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BATTERY WIRES
See BATTERY CABLES, WIRES AND CONNECTORS .
BELT-DRIVEN AIR PUMPS
BELT-DRIVEN AIR PUMP INSPECTION \
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Condition Code Procedure
Attaching hardware
broken ................. A ... Require repair or replacement
of hardware.
Attaching hardware
missing ................ C .......... Require replacement of
hardware.
Attaching hardware not
functioning ............ A ... Require repair or replacement
of hardware.
Inoperative ............. A ........ ( 1) Require replacement.
Leaking ................. A ............ Require replacement.
Missing ................. C ............ Require replacement.
Noisy ................... 2 ............ Suggest replacement.
Pulley alignment
incorrect .............. B .. Require repair or replacement.
Pulley bent ............. A ............ Require replacement.
Pulley cracked .......... A ............ Require replacement.
Pulley loose ............ A .. Require repair or replacement.
Pulley missing .......... C ............ Require replacement.
Threads damaged ......... A .. Require repair or replacement.
Threads stripped (threads
Page 808 of 1691
![DODGE RAM 1999 Service Workshop Manual WIRING HARNESS AND CONNECTOR INSPECTION \
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WIRING HARNESS AND CONNECTOR INSPECTION \
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Condition Code Procedure
Application incorrect ... B .. Require repair or replacement.
Attaching hardware
broken ................. A ... Require repair or replacement
of hardware.
Attaching hardware
missing ................ C .......... Require replacement of
hardware.
Attaching hardware not
functioning ............ A ... Require repair or replacement
of hardware.
Connector broken ........ A .. Require repair or replacement.
Connector (Weatherpack
type) leaking .......... A .. Require repair or replacement.
Connector melted ........ A ........... (1) Require repair or
replacement.
Connector missing ....... C ............ Require replacement.
Insulation damaged,
conductors exposed ..... A .. Require repair or replacement.
Insulation damaged,
conductors not exposed . 1 ............ Suggest replacement.
Open .................... A .. Require repair or replacement.
Protective shield
(conduit) melted ....... 2 ........... ( 1) Suggest repair or
replacement.
Protective shield
(conduit) missing ...... 2 .. Suggest repair or replacement.
Resistance (voltage drop)
out of specification ... A .. Require repair or replacement.
Routed incorrectly ...... B ................. Require repair.
Secured incorrectly ..... B ................. Require repair.
Shorted ................. A .. Require repair or replacement.
Terminal broken ......... A .. Require repair or replacement.
Terminal burned, affecting
performance ............ A ........... ( 1) Require repair or
replacement.
Terminal burned, not
affecting performance .. 2 .. Suggest repair or replacement.
Terminal corroded,
affecting performance .. A .. Require repair or replacement.
Terminal corroded, not
affecting performance .. 2 .. Suggest repair or replacement.
Terminal loose, affecting
performance ............ B .. Require repair or replacement.
Terminal loose, not
affecting performance .. 1 .. Suggest repair or replacement.
Voltage drop out of
specification .......... A .. Require repair or replacement.
( 1) - Determine cause and correct prior to repair or
replacement of part.
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Page 824 of 1691
pointer is at one o'clock position. Push in on knob slightly and
continue rotating knob to its full clockwise stop. Place knob pointer
at a position about .32" (8 mm) beyond end of Red stripe. Release
knob. If knob is pointing at about .32" (8 mm) beyond end of Red
stripe, go to next step. If knob is not pointing at about .32" (8 mm)
beyond end of Red stripe, go back to step 2) and repeat adjustment
procedure.
4) Rotate temperature control knob counterclockwise so that
knob pointer is at 12 o'clock position. Push temperature control knob
straight into heater control panel until perimeter of knob (not knob
pointer) is flush with base of heater control panel.
5) Rotate temperature control knob to its full clockwise
stop. Release knob. Knob pointer should be aimed at end of Red stripe.
If knob is pointed at end of Red stripe, go to next step. If knob is
not pointed at end of Red stripe, go back to step 2) and repeat
adjustment procedure.
6) Rotate temperature control knob to its full
counterclockwise stop. Release knob. If knob springs back, self-
adjuster clip securing temperature control cable to blend-air door
lever is improperly installed. See TEMPERATURE CONTROL CABLE R & I
under REMOVAL & INSTALLATION. If knob does not springs back,
temperature control cable adjustment is complete.
TROUBLE SHOOTING
HEATER PERFORMANCE
Check cooling system. Check serpentine drive belt tension.
Check radiator and radiator fan operation. Ensure that accessory
vacuum supply line is connected at power brake booster (Dakota) or
engine vacuum source (except Dakota).
TESTING
WARNING: To avoid injury from accidental air bag deployment, read and
carefully follow all SERVICE PRECAUTIONS and DISABLING &
ACTIVATING AIR BAG SYSTEM procedures in AIR BAG SYSTEM SAFETY
article.
BLOWER MOTOR RELAYS
1) Blower motor relay is located in Power Distribution Center
(PDC). On Ram Van/Wagon, high speed blower motor relay is located in
engine compartment (on side of heater assembly). On all models,
disconnect negative battery cable. Remove blower motor relay. Using an
ohmmeter, check for continuity between terminals No. 87A and 30 of
relay. See Fig. 1. If continuity does not exist, replace relay. If
continuity exists, go to next step.
2) Using an ohmmeter, check for continuity between terminals
No. 30 and 87 of relay. If continuity exists, replace relay. If
continuity does not exist, go to next step.
3) Measure resistance between terminals No. 85 and 86 of
relay. Reading should be 70-80 ohms. If reading is not as specified,
replace relay. If reading is as specified, go to next step.
4) Using jumper wires, connect battery voltage to terminal
No. 86 and ground terminal No. 85. See Fig. 1. Check that continuity
exists between terminals No. 30 and 87. Check that continuity does not
exist between terminals No. 87A and 30. If continuity is not as
specified, replace blower motor relay. If continuity is as specified,
relay is okay.
Page 832 of 1691
removal procedure.
HEATER ASSEMBLY
Removal (Dakota & Durango)
1) Disconnect negative battery cable. Drain cooling system.
Remove instrument panel. See INSTRUMENT PANEL.
2) In engine compartment, disconnect heater hoses and plug
all openings. Remove 4 heater assembly nuts from engine compartment
firewall. Inside vehicle, remove heater assembly support brace screw,
and swing support brace out of way. Move passenger seat rearward.
3) Carefully pull heater assembly rearward until studs and
heater core tubes clear firewall. Lower heater assembly and rotate
assembly until studs are facing downward. Remove heater assembly from
vehicle.
4) Place heater assembly on work bench with assembly housing
cover facing down. Remove 2 bolts securing heater assembly housing
cover to blower motor housing cover. Unplug vacuum harness connector
from panel/defrost door actuator.
5) Remove floor duct from heater assembly housing. Remove 2
bolts securing heater assembly housing cover to lower housing near
floor outlet. Turn assembly over. Disengage vacuum harness retainer
and vacuum harness. Remove 13 screws securing housing cover.
6) Remove blend-air door lever. Gently pry panel-defrost door
lever off. Pull up on heater assembly housing cover far enough to
separate cover sealant and remove cover.
Installation
Ensure blower motor housing cover sealant is in place and in
good condition. To complete installation, reverse removal procedure.
Removal (Ram Pickup)
1) Disconnect negative battery cable. Drain cooling system.
In engine compartment, remove coolant hoses from heater core tubes.
Plug all openings. Remove coolant overflow bottle. Remove instrument
panel. See INSTRUMENT PANEL . Remove Powertrain Control Module (PCM)
and position aside. DO NOT disconnect 60-pin connector from PCM.
2) Remove attaching nuts from studs on engine compartment
side of dash panel. Remove defrost duct. Disconnect electrical
connectors. Remove attaching nuts from studs in passenger compartment
side of dash panel. Remove heater assembly from vehicle.
3) Place heater assembly upside-down on work bench. Remove
screw securing floor duct to bottom of heater assembly and slide floor
duct off of center heat duct adapter. Unsnap center heat duct adapter
from bottom of heater assembly housing. Remove screw hidden behind
adapter. Remove remaining screws and separate heater assembly.
Installation
Ensure mode door pivot pins are properly inserted in holes.
To complete installation, reverse removal procedure.
Removal & Installation (Ram Van/Wagon)
1) Disconnect negative battery cable. Drain engine cooling
system. In engine compartment, protect generator from coolant
spillage. Remove heater hoses from heater core tubes. Plug all
openings. Remove grille, cowl grille support panel, right headlight
assembly, and right radiator core support assembly. See Fig. 7.
2) From inside vehicle, remove glove box bin. Through glove
box opening and from under instrument panel, remove nuts and bolts
attaching heater assembly to dash panel.
3) Remove blower housing flange screws. Separate heater
assembly from blower housing. See Fig. 6. Carefully remove heater
assembly from vehicle.
Page 834 of 1691
side of instrument panel, near transmission tunnel, and unplug heater
control panel-to-heater assembly vacuum harness connector. Disconnect
vacuum harness from center air duct.
2) On models equipped with A/T, unlock ignition switch. Set
parking brake and place gear selector lever in "L" position. If
equipped, set tilt steering column in lowest position.
3) On all models, remove screw securing cluster bezel to
instrument panel. See Fig. 8. Carefully pry bezel away from instrument
panel to disengage clips. Unplug connectors from cigarette lighter and
auxiliary power outlet.
4) Remove 4 bolts attaching heater control panel. Pull
control panel outward enough to disconnect wiring connector and vacuum
harness. Remove heater control panel. To install, reverse removal
procedure.
Fig. 8: Removing Cluster Bezel (Ram Pickup)
Courtesy of Chrysler Corp.
CAUTION: Use care when removing or installing instrument cluster bezel
so as not to damage trip odometer reset button. If trip
odometer reset button is damaged, instrument cluster must be
replaced.
Removal & Installation (Ram Van/Wagon)
1) Disconnect negative battery cable. Remove engine cover
from passenger compartment. Reach between upper dash panel engine
housing extension and bottom of instrument panel. Disconnect vacuum
harness connector located near left defroster outlet of distribution
duct.
2) On models equipped with A/T, unlock ignition switch. Set
parking brake and place gear selector lever in "L" position. If
equipped, set tilt steering column in lowest position. Carefully pry
bezel away from instrument panel to disengage clips. Pull bezel away
far enough to clear trip odometer reset button. Remove bezel.
3) Remove 3 bolts from heater control panel. Pull heater
control panel outward enough to disconnect electrical connectors and
Page 836 of 1691
and hoses are clear and not pinched. Adjusting temperature control
cable. See TEMPERATURE CONTROL CABLE ADJUSTMENT . Tighten bolts and
nuts to specification. See TORQUE SPECIFICATIONS. Enable air bag
system. See AIR BAG SYSTEM SAFETY article.
Removal & Installation (Ram Pickup)
1) Disconnect negative battery cable. Ensure front wheels are
in a straight-ahead position and steering wheel is in LOCKED position.
Disable air bag system. See AIR BAG SYSTEM SAFETY article. Remove Air
Bag Control Module (ACM) and bracket from floor panel transmission
tunnel. Drain cooling system.
2) Remove left and right cowl side inner trim panels. Remove
knee bolster/steering column cover. Remove hood release and parking
brake release handle bolts from lower instrument panel support.
3) Disconnect driver's side air bag connector at lower left
corner of instrument panel. If equipped, disconnect overdrive lock-out
switch wiring harness connector from instrument panel wire harness
near instrument panel lower reinforcement.
4) Pull PRNDL cable and twist to remove from position arm.
Push tab on bottom of cable retainer upward, then squeeze sides to
remove retainer from column. If equipped, remove tilt lever. Remove
both upper and lower shrouds from column. Remove lower fixed column
shroud. Loosen multifunction switch connector screw. Screw will remain
in connector.
5) Ensure steering wheel is in LOCKED position. Remove
remaining steering column electrical connectors. Remove air bag wiring
harness from steering column wiring trough. Remove wiring trough from
steering column. Remove steering column as an assembly from vehicle.
6) From driver's side of instrument panel, disengage parking
brake release linkage rod from parking brake mechanism. Disconnect
instrument panel wiring harness from parking brake mechanism.
Disconnect 3 wiring harness bulkhead connectors located closest to
dash panel.
7) Disconnect instrument panel left side wiring harness
connectors. Remove screw from center of headlight and dash-to-
instrument panel (bulkhead) connector, and disconnect connector.
Disconnect instrument panel-to-door wiring harness. Disconnect
instrument panel to stoplight switch connector. Disconnect vacuum
harness for heater system.
8) If equipped with an Infinity sound system, disconnect
Infinity wiring harness connector from instrument panel harness
connector that is secured to bulkhead connector.
9) From passenger's side of instrument panel, disconnect
radio antenna coaxial cable connector. Loosen right and left
instrument panel roll-down bracket bolts about .50" (13 mm). Removing
center screw last, remove 5 bolts holding top of instrument panel to
top of dash panel.
10) Roll instrument panel downward and install a temporary
support hook to center hole of dash panel. Support hook should support
instrument panel in rolled-down position, about 18" (457 mm) away from\
dash panel. Disconnect remaining wiring harness connectors. With the
aid of an assistant, remove temporary hook and lift instrument panel
from vehicle.
11) To install, reverse removal procedure. Ensure all wiring
and hoses are clear and not pinched. Tighten bolts and nuts to
specification. See TORQUE SPECIFICATIONS . Enable air bag system. See
AIR BAG SYSTEM SAFETY article.
TEMPERATURE CONTROL CABLE R & I
Removal (Dakota & Durango)
Disconnect negative battery cable. Disconnect but DO NOT
remove instrument panel. See INSTRUMENT PANEL. Disconnect temperature