FUEL PUMP RELAY
DESCRIPTION
The fuel pump relay is located in the PDC. The
inside top of the PDC cover has a label showing relay
and fuse location.
OPERATION
The fuel pump relay supplies battery voltage to the
fuel pump. A buss bar in the Power Distribution Cen-
ter (PDC) supplies voltage to the solenoid side and
contact side of the relay. The fuel pump relay power
circuit contains a fuse between the buss bar in the
PDC and the relay. The fuse is located in the PDC.
Refer to the Wiring Diagrams for circuit information.
The PCM controls the fuel pump relay by switch-
ing the ground path for the solenoid side of the relay
on and off. The PCM turns the ground path off when
the ignition switch is in the Off position. When the
ignition switch is in the On position, the PCM ener-
gizes the fuel pump. If the crankshaft position sensor
does not detect engine rotation, the PCM de-ener-
gizes the relay after approximately one second.
IDLE AIR CONTROL MOTOR
DESCRIPTION
The idle air control motor is mounted on the throt-
tle body. The PCM operates the idle air control motor
(Fig. 14) or (Fig. 15).
OPERATION
The PCM adjusts engine idle speed through the
idle air control motor to compensate for engine load,
coolant temperature or barometric pressure changes.
The throttle body has an air bypass passage that
provides air for the engine during closed throttle idle.
The idle air control motor pintle protrudes into the
air bypass passage and regulates air flow through it.
The PCM adjusts engine idle speed by moving the
IAC motor pintle in and out of the bypass passage. The
adjustments are based on inputs the PCM receives.
The inputs are from the throttle position sensor, crank-
shaft position sensor, coolant temperature sensor, MAP
sensor, vehicle speed sensor and various switch opera-
tions (brake, park/neutral, air conditioning).
When engine rpm is above idle speed, the IAC is
used for the following functions:
²Off-idle dashpot
²Deceleration air flow control
²A/C compressor load control (also opens the pas-
sage slightly before the compressor is engaged so
that the engine rpm does not dip down when the
compressor engages)
Target Idle
Target idle is determined by the following inputs:
²Gear position
²ECT Sensor
²Battery voltage
²Ambient/Battery Temperature Sensor
²VSS
²TPS
²MAP Sensor
Fig. 14 TPS/IAC 2.4L
1 - Idle Air Control Motor
2 - Throttle Position Sensor
Fig. 15 TPS/IAC 3.3/3.8L
1 - Idle Air Control Motor
2 - Throttle Position Sensor
RSFUEL INJECTION14-27
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WARNING: THE AIR BAG SYSTEM IS A SENSITIVE,
COMPLEX ELECTRO-MECHANICAL UNIT. BEFORE
ATTEMPTING TO DIAGNOSE, REMOVE OR INSTALL
THE AIR BAG SYSTEM COMPONENTS YOU MUST
FIRST DISCONNECT AND ISOLATE THE BATTERY
NEGATIVE (GROUND) CABLE. THEN WAIT TWO
MINUTES FOR THE SYSTEM CAPACITOR TO DIS-
CHARGE. FAILURE TO DO SO COULD RESULT IN
ACCIDENTAL DEPLOYMENT OF THE AIR BAG AND
POSSIBLE PERSONAL INJURY. THE FASTENERS,
SCREWS, AND BOLTS, ORIGINALLY USED FOR
THE AIR BAG COMPONENTS, HAVE SPECIAL
COATINGS AND ARE SPECIFICALLY DESIGNED
FOR THE AIR BAG SYSTEM. THEY MUST NEVER
BE REPLACED WITH ANY SUBSTITUTES. ANYTIME
A NEW FASTENER IS NEEDED, REPLACE WITH
THE CORRECT FASTENERS PROVIDED IN THE
SERVICE PACKAGE OR FASTENERS LISTED IN
THE PARTS BOOKS.
WARNING: SAFETY GOGGLES SHOULD BE WORN
AT ALL TIMES WHEN WORKING ON STEERING
COLUMNS.
CAUTION: Disconnect negative (ground) cable from
the battery before servicing any column compo-
nent.
CAUTION: Do not attempt to remove the pivot pins
to disassemble the tilting mechanism. Damage will
occur.
DIAGNOSIS AND TESTING - STEERING
COLUMN
For diagnosis of conditions relating to the steering
column (Refer to 19 - STEERING - DIAGNOSIS ANDTESTING) and (Refer to 19 - STEERING - DIAGNO-
SIS AND TESTING).
REMOVAL
NOTE: Before proceeding, (Refer to 19 - STEERING/
COLUMN - WARNING).
(1) Make sure the front wheels of the vehicle are
in the STRAIGHT AHEAD position before beginning
the column removal procedure.
(2) Disconnect negative (ground) cable from the
battery and isolate cable from battery terminal.
(3) Remove the lower shroud (Refer to 19 -
STEERING/COLUMN/LOWER SHROUD - REMOV-
AL).
(4) Remove the traction off switch.
(5) Remove the upper shroud.
(6) Remove the cluster trim bezel (Refer to 23 -
BODY/INSTRUMENT PANEL/CLUSTER BEZEL -
REMOVAL).
(7) Remove the knee blocker (Refer to 23 - BODY/
INSTRUMENT PANEL/STEERING COLUMN
OPENING COVER - REMOVAL).
(8) Remove the parking brake handle link.
(9) Remove the knee blocker reinforcement (Refer
to 23 - BODY/INSTRUMENT PANEL/KNEE
BLOCKER - REMOVAL).
(10) Remove the airbag (Refer to 8 - ELECTRI-
CAL/RESTRAINTS/DRIVER AIRBAG - REMOVAL).
(11) Remove the steering wheel retaining nut.
(12) Remove the vibration damper weight.
(13) Remove the steering wheel (Refer to 19 -
STEERING/COLUMN/STEERING WHEEL -
REMOVAL). (Fig. 3)
(14) Disconnect the wiring harness connectors
from the clockspring, multi-function switch, halo
lamp, SKIM module, ignition switch and BTSI sole-
noid.
1 - CLOCKSPRING WIRING
2 - STEERING WHEEL
3 - UPPER SHROUD
4 - FIXED SHROUD
5 - SCREW
6 - STEERING COLUMN MOUNTING PLATE
7 - NUT
8 - DASH PANEL STEERING COLUMN MOUNTING BRACKET
9 - STUDS (4)
10 - STEERING COLUMN LOCKING PIN
11 - NUT/WASHER ASSEMBLY
12 - STEERING COLUMN ASSEMBLY
13 - LOWER SHROUD
14 - SCREWS
15 - STEERING WHEEL RETAINING NUT16 - STEERING WHEEL DAMPER
17 - CLOCKSPRING
18 - SCREW
19 - MULTI-FUNCTION SWITCH
20 - PINCH BOLT
21 - STEERING COLUMN COUPLER
22 - PINCH BOLT RETAINING PIN
23 - DASH PANEL
24 - SILENCER SHELL
25 - INTERMEDIATE SHAFT SHIELD AND SEAL
26 - INTERMEDIATE SHAFT
27 - ROLL PIN
28 - POWER STEERING GEAR
29 - FRONT SUSPENSION CRADLE/CROSSMEMBER
19 - 12 COLUMNRS
COLUMN (Continued)
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(5) Install the mounting plate with the multi-func-
tion switch.
(6) Install the clockspring (Refer to 8 - ELECTRI-
CAL/RESTRAINTS/CLOCKSPRING - INSTALLA-
TION).
(7) Install the steering column to the vehicle.
(8) Install the two upper mounting nuts
(9) Tighten the two lower mounting nuts and the
two upper mounting nuts. Tighten to 12 N´m (105 in.
lbs.).
(10) Install the coupling onto the intermediate
shaft and install the pinch bolt. Tighten the pinch
bolt to 28 N´m (250 in. lbs.).
(11) Install the cable from the bracket on the col-
umn, then install the pinch side clips.
(12) Reconnect the shift cable at the lever.
(13) Reconnect the wiring harness connectors to
the clockspring, multi-function switch, halo lamp,
SKIM module, ignition switch and BTSI solenoid.
(14) Install the steering wheel (Refer to 19 -
STEERING/COLUMN/STEERING WHEEL -
INSTALLATION).
(15) Install the vibration damper weight.
(16) Install the steering wheel retaining nut.
Tighten the nut to 61 N´m (45 ft. lbs.)
(17) Install the airbag (Refer to 8 - ELECTRICAL/
RESTRAINTS/DRIVER AIRBAG - INSTALLATION).
(18) Install the knee blocker reinforcement (Refer
to 23 - BODY/INSTRUMENT PANEL/KNEE
BLOCKER - INSTALLATION).(19) Install the parking brake handle link.
(20) Install the knee blocker (Refer to 23 - BODY/
INSTRUMENT PANEL/STEERING COLUMN
OPENING COVER - INSTALLATION).
(21) Install the cluster trim bezel (Refer to 23 -
BODY/INSTRUMENT PANEL/CLUSTER BEZEL -
INSTALLATION).
(22) Install the upper shroud (Refer to 19 -
STEERING/COLUMN/LOWER SHROUD - INSTAL-
LATION).
(23) Install the traction off switch.
(24) Install the lower shroud.
SPECIFICATIONS
COLUMN TORQUE
DESCRIPTION N´mFt.
Lbs.In.
Lbs.
Steering Wheel Retaining
Nut61 45 Ð
Steering Column Mounting
Bracket Attaching Nuts12 Ð 105
Steering Column Coupling
Pinch Bolt28 Ð 250
Steering Column Airbag
Module Attaching Nuts11 Ð 100
19 - 14 COLUMNRS
COLUMN (Continued)
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IGNITION SWITCH
REMOVAL
The ignition switch attaches to the lock cylinder
housing on the end opposite the lock cylinder (Fig. 7).
For ignition switch terminal and circuit identifica-
tion, 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 har-
ness connectors, splices and grounds.
(1) Disconnect negative cable from battery.
(2) Remove steering column cover retaining screws
(Fig. 8).(3) Remove parking brake release cable from han-
dle (Fig. 9).
(4) Remove screws holding steering column
shrouds (Fig. 10)and remove lower shroud.
Fig. 7 Ignition SwitchÐViewed From Below Column
1 - IGNITION SWITCH
2 - LOCK CYLINDER HOUSING
3 - RETAINING TABS
Fig. 8 Steering Column Cover
1 - SCREWS
2 - STEERING COLUMN COVER
Fig. 9 Parking Brake Release Cable
1 - PARKING BRAKE CABLE
2 - PARKING BRAKE HANDLE
Fig. 10 Steering Column Shroud Screws
1 - STEERING WHEEL
2 - SCREWS
3 - LOWER STEERING COLUMN SHROUD
RSCOLUMN19-15
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(5) Place key cylinder in RUN position. Depress
lock cylinder retaining tab and remove key cylinder
(Fig. 11).
(6) Remove ignition switch mounting screw (Fig.
12) with a #10 Torxttamper proof bit.
(7) Depress retaining tab (Fig. 8) or (Fig. 13) and
gently pry ignition switch from steering column (Fig.
14).
(8) Disconnect electrical connectors from ignition
switch and remove switch (Fig. 15).
INSTALLATION
The ignition switch attaches to the lock cylinder
housing on the end opposite the lock cylinder (Fig. 7)
. For ignition switch terminal and circuit identifica-
tion, refer to the Wiring Diagrams section.
(1) Ensure the ignition switch is in the RUN posi-
tion and the actuator shaft in the lock housing is in
the RUN position.
(2) Install electrical connectors to ignition switch.
Fig. 11 Lock Cylinder Retaining Tab
1 - IGNITION SWITCH
2 - RETAINING TAB
Fig. 12 Ignition Switch Mounting Screw
1 - MOUNTING SCREW
2 - IGNITION SWITCH
Fig. 13 Ignition Switch Retaining Tab
1 - IGNITION SWITCH
2 - RETAINING TAB
Fig. 14 Removing Ignition Switch
1 - IGNITION SWITCH
2 - RETAINING TAB
19 - 16 COLUMNRS
IGNITION SWITCH (Continued)
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(8) Remove the two screws holding the metal cover
in place below the shifter/ignition interlock linkage
(Fig. 22), then remove the cover.
(9) Disconnect the shifter/ignition interlock link
from the lever on the lock cylinder housing (Fig. 23).
(10) Remove the key cylinder. To do this:
²Turn the key placing the key cylinder in the ON
position.²Depress and hold the retaining tab on the bot-
tom of the lock cylinder housing (Fig. 24).
²Pull the key cylinder straight out of the lock cyl-
inder housing.
(11) Remove the vehicle wiring harness connector
from the key cylinder halo lamp (Fig. 25).
(12) Remove the key cylinder halo lamp from the
lock cylinder housing.
Fig. 22 Cover Removal/Installation
1 - IGNITION SWITCH
2 - SCREW
3 - COVER
Fig. 23 Shifter/Ignition Interlock Linkage
Disconnected
1 - LEVER
2 - LINK
3 - LOCK CYLINDER HOUSING
Fig. 24 Cylinder Retaining Tab
1 - IGNITION SWITCH
2 - RETAINING TAB
Fig. 25 Wiring Harness Connection To Halo Lamp
1 - IGNITION SWITCH
2 - STEERING COLUMN ASSEMBLY
3 - WIRING HARNESS CONNECTOR
4 - IGNITION SWITCH HALO LIGHT
RSCOLUMN19-19
LOCK CYLINDER HOUSING (Continued)
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(5) Carefully install the ignition switch over the
actuator shaft (Fig. 30) . The switch will snap over
the retaining tabs on the housing.
(6) Install the ignition switch mounting screw (Fig.
26) .
(7) Install the key cylinder halo lamp on the lock
cylinder housing.
(8) Install the vehicle wiring harness connector
onto the key cylinder halo lamp (Fig. 25) .
(9) Install the key cylinder (with key in it turned
to the ON position) by sliding it straight into the lock
cylinder housing aligning the retaining tab on the
key cylinder with the hole in the lock cylinder hous-
ing.
(10) Turn the key to the OFF position and remove
the key.
(11) Connect the shifter/ignition interlock link to
the lever on the lock cylinder housing by aligning the
retaining tab on the lever with the ramp on the link
(Fig. 23) , then pushing the two together.
(12) Install the metal cover in place below the
shifter/ignition interlock linkage using the two
screws (Fig. 22) .
(13) Install the steering column fixed shroud on
the steering column (Fig. 21) using its 2 mounting
screws.
(14) Install the trim bezel on the instrument panel
above the steering column. The trim bezel is
mounted to the instrument panel using 2 screws (one
on each side of the column) and retaining clips.
(15) Install the lower steering column shroud on
the steering column. Install and securely tighten the
center screw attaching the lower shroud to the tilt
head on the column (Fig. 20) .(16) Install the upper steering column shroud over
the tilt head of the steering column snapping it into
place on the lower shroud. Install and securely
tighten the 2 remaining screws attaching the upper
shroud to the lower shroud (Fig. 20) .
(17) Install the steering column cover liner on the
instrument panel below the steering column (Fig. 19)
. Install and securely tighten the 10 bolts attaching
the steering column cover liner to the instrument
panel.
(18) Install the parking brake pedal release cable
on the parking brake release lever in the lower steer-
ing column cover (Fig. 18) .
(19) Install the lower steering column trim cover
on the instrument panel below the steering column.
Install and securely the screws attaching the lower
steering column cover to the instrument panel (Fig.
17) .
(20) Connect the negative (ground) cable on the
battery terminal.
KEY/LOCK CYLINDER
DESCRIPTION
The lock cylinder is inserted in the end of the
housing opposite the ignition switch.
OPERATION
The ignition key rotates the cylinder to 5 different
detents (Fig. 31) :
²Accessory
²Off (lock)
²Unlock
²On/Run
²Start
Fig. 30 Ignition Switch Installation
1 - IGNITION SWITCH
2 - ACTUATOR SHAFT
3 - RETAINING TABS
Fig. 31 Ignition Lock Cylinder Detents
RSCOLUMN19-21
LOCK CYLINDER HOUSING (Continued)
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REMOVAL
(1) Disconnect negative cable from battery.
(2) Remove steering column cover retaining
screws.
(3) Remove screws holding steering column
shrouds and remove lower shroud.
(4) Place key cylinder in RUN position. Depress
lock cylinder retaining tab on the bottom of the lock
housing and remove key cylinder.
INSTALLATION
(1) Install key in lock cylinder. Turn key to run
position (retaining tab on lock cylinder can be
depressed).
(2) The shaft at the end of the lock cylinder aligns
with the socket in the end of the housing. To align
the socket with the lock cylinder, ensure the socket is
in the Run position (Fig. 32) .
(3) Align the lock cylinder with the grooves in the
housing. Slide the lock cylinder into the housing
until the tab sticks through the opening in the hous-
ing.
(4) Turn the key to the Off position. Remove the
key.
(5) Install lower steering column shroud.
(6) Install steering column cover.
(7) Connect negative cable to battery.
GEAR SHIFT LEVER
REMOVAL
(1) Remove the knee blocker (Refer to 23 - BODY/
INSTRUMENT PANEL/STEERING COLUMN
OPENING COVER - REMOVAL).(2) Remove the knee blocker reinforcement (Refer
to 23 - BODY/INSTRUMENT PANEL/KNEE
BLOCKER - REMOVAL).
(3) Remove the upper and lower shrouds (Refer to
19 - STEERING/COLUMN/LOWER SHROUD -
REMOVAL).
(4) Remove the cluster trim bezel (Refer to 23 -
BODY/INSTRUMENT PANEL/CLUSTER BEZEL -
REMOVAL).
(5) Remove the fixed shroud from the column.
(6) Disconnect the electrical connector to the BTSI.
(7) Remove the two screws securing the BTSI to
the steering column. (Fig. 33)
(8) Disconnect the SKIM electrical wire connector.
(9) Remove the SKIM from the steering column.
(10) Disconnect the autostick wiring connector (if
equipped with autostick).
(11) Disconnect the shifter cable at the shifter.
(12) Remove the three screws securing the shifter
to the steering column. (Fig. 34)
(13) Remove the shift lever from the column.
INSTALLATION
(1) Install the shifter cable to the shifter.
(2) Install the three screws securing the shifter to
the steering column.
(3) Install the shifter cable at the handle.
(4) Install the SKIM to the steering column.
(5) Reconnect the SKIM electrical wire connector.
(6) Reconnect the autostick wiring connector (if
equipped with autostick).
(7) Install the two screws securing the BTSI to the
steering column.
(8) Reconnect the electrical connector to the BTSI.
(9) Install the fixed shroud to the column.
Fig. 32 Socket in Lock Cylinder Housing
1 - LOCK CYLINDER HOUSING
2 - SOCKET
Fig. 33 SHIFT LEVER / B.T.S.I
1 - B.T.S.I.
2 - SHIFT LEVER
19 - 22 COLUMNRS
KEY/LOCK CYLINDER (Continued)
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