1988 JEEP CHEROKEE wiring

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Page 1026 of 1378

JEEP CHEROKEE 1988 Service Repair Manual STE ER IN G C O LU M N

1988 J e ep C hero ke e
1988 STEERING
Jeep Steering Columns
All Models
DESCRIPTION
All models use collapsible steering column

Page 1027 of 1378

JEEP CHEROKEE 1988 Service Repair Manual Fig. 1: Exploded View of RWD Steering Column Major Assemblies
Installation
1) On all models, aligning lower shaft with lower coupling
and insert shaft. Raise column assembly into po

Page 1028 of 1378

JEEP CHEROKEE 1988 Service Repair Manual * The lock inhibitor assembly consists of a lever that engages
lock levers (preventing locking of steering shaft), a button
to operate lever and a return spring. Assembly is a

* The lock inhibitor assembly consists of a lever that engages
lock levers (preventing locking of steering shaft), a button
to operate lever and a return spring. Assembly is attached to
lock housing in same location as shift gate is on column
shift. Lower steering shaft bearing is mounted in an aluminum
support.
* A spring is attached between shift housing and column jacket.
This spring keeps housing rotated counterclockwise against
rubber bumper.
OVERHAUL
STANDARD COLUMN
NOTE: All columns are similar except for appearance of covers.
Some models use ignition key light, while others do not.
Disassembly and reassembly procedures cover all models. Some
procedures may not apply to every steering column.
Disassembly
1) Pry out wiring trough retainers. Lift off trough. New
retainers may be required for reassembly. Use masking tape to protect
paint and a deep socket to back-up housing. Drive retaining roll pin
out with a punch to remove shift lever.
2) Remove breakaway capsules. Secure column in vise by
clamping at column bracket. DO NOT distort column. Remove turn signal
lever cover-to-lock housing attaching screws. Remove cover. Remove
wiper/washer switch assembly. Pull switch cover up wiper/washer lever.
Remove lever sleeve-to-switch attaching screws.
3) Rotate wiper/washer shaft to full clockwise position.
Remove shaft from switch. Remove turn signal switch and upper bearing
retaining screws. Remove retainer. Lift switch upward out of way.
Unclip horn ground wire. Remove ignition key light retaining screw.
Lift ignition key light out of way.
4) Remove bearing housing-to-lock attaching screws. Remove
snap ring from upper end of steering shaft. Remove bearing housing
from shaft. Remove lock plate spring and lock plate from shaft. Remove
shaft through lower end of column.
5) Remove ignition key. Remove warning switch retaining
screw. Lift out key warning switch. Remove 2 ignition switch-to-column
jacket retaining screws. See Fig. 2. Remove ignition switch by
rotating switch 90 degrees on actuator rod. Remove 2 dimmer switch
retaining screws. Disengage dimmer switch from rod.

Page 1033 of 1378

JEEP CHEROKEE 1988 Service Repair Manual rod down column. Install bellcrank onto its mounting surface.
Gearshift lever should be in "PARK" position.
7) Place ignition switch on actuator rod. Rotate switch 90
degrees to lock rod into

rod down column. Install bellcrank onto its mounting surface.
Gearshift lever should be in "PARK" position.
7) Place ignition switch on actuator rod. Rotate switch 90
degrees to lock rod into position. Install ignition lock by turning
key to "LOCK" position. Remove key. Insert cylinder into housing far
enough to contact switch actuator. Insert key. Press inward. Rotate
cylinder.
8) When parts align, cylinder will move inward and spring
loaded retainers will snap into place, locking cylinder in housing.
With cylinder and ignition switch in "LOCK" position, tighten ignition
switch mounting screws.
9) Feed key warning switch wires behind wiring post and down
through space between housing and jacket. Remove ignition key.
Position cylinder in housing. Tighten mounting screws. Install lower
bearing support (floor shift), bearing and spring on steering shaft.
10) Install and lubricate rubber "O" ring in lower groove on
upper end of steering shaft. Insert steering shaft assembly into
column assembly. Press upper bearing into upper bearing housing.
Bearing must be fully seated.
11) Push up on steering shaft to compress bearing and spring.
Hold shaft in this position until snap ring is installed. Install lock
plate on steering shaft. Install upper bearing spring. Install upper
bearing housing with bearing previously installed. Tighten bearing
housing retaining screws to 35 INCH lbs (4 N.m).
12) Install upper bearing snap ring on steering shaft,
locking assembly into position. Install 4 screws attaching bearing
housing to lock housing. Install ignition key lamp assembly in bearing
housing. Install turn signal switch in bearing housing.
13) Feed turn signal switch and ignition key lamp wires
through opening between bearing housing and lock housing and down
along bottom of jacket. Install bearing retainer plate. Tighten
screws. Ensure that ground wires from turn signal switch are
positioned toward ground clips before tightening.
14) Assemble wiper switch, shaft, cover or speed control
switch, switch cover and knob. Place wiper/washer switch assembly into
lock housing, feeding wires through lock housing. Fasten wires to turn
signal switch. Install dimmer switch rod and dimmer switch.
15) Install turn signal lever cover. Install breakaway
capsules. Install wiring trough in place, being careful not to pinch
wires. Install new retainers (if necessary).

Page 1035 of 1378

JEEP CHEROKEE 1988 Service Repair Manual 1) Remove lower bracket assembly-to-lower bearing support
bolts. On column shift models, remove shift housing cover. On floor
shift models, unsnap and remove shroud extensions. Remove wiring

1) Remove lower bracket assembly-to-lower bearing support
bolts. On column shift models, remove shift housing cover. On floor
shift models, unsnap and remove shroud extensions. Remove wiring
protector from column jacket.
2) Mount column in vise at capsule bracket. Mount Holding
Fixture (C-4132) onto column. Mount holding fixture and column in
vise.
3) Remove tilt lever. To remove hazard warning knob, push in
knob while unscrewing. Remove ignition key light assembly. Pull knob
off wiper/washer switch assembly. Pull hider up switch lever. Remove 2
sleeve-to-wiper/washer switch retaining screws. Remove sleeve.
4) Rotate shaft in wiper switch fully clockwise. Remove shaft
by pulling straight out of wiper/washer switch. Carefully remove
plastic cover from lock plate. Using Lock Plate Depressor (J-23653-A
for Jeep), depress lock plate. Pry retaining ring from groove.
5) Remove lock plate, canceling cam and upper bearing plate.
Remove switch actuator screw and arm. Remove 3 turn signal switch
attaching screws. Place shift bowl in "LOW" position. Wrap a piece of
tape around wires to prevent snagging when removing switch. Remove
switch and wiring.
6) Remove key light. Place lock cylinder in "LOCK" position.
Insert a small screwdriver into slot next to switch mounting screw
boss. Depress spring latch at bottom of slot. Remove lock.
7) Using a paper clip, remove key warning switch. Bend one
end of clip into a hook. Insert hook into exposed loop of wedge
spring. Pull clip. Remove spring and switch. DO NOT allow spring to
fall into steering column.
8) Remove 3 housing cover screws. Remove housing cover.
Remove wiper/washer switch. Using a punch, press out wiper switch
pivot pin (if necessary). Tilt lever opening shield and dimmer switch
actuator rod may be removed from cap (if necessary).
9) Place column in fully upright position. Using a large
Phillips screwdriver, remove tilt spring retainer. Insert screwdriver
in opening. Push in approximately 3/16". Turn approximately 1/8 turn
clockwise until ears align with grooves in housing. Remove spring and
guide.
10) Remove dimmer switch mounting screws. Remove dimmer
switch. Separate dimmer switch from rod by pulling on rod. Push upper
steering shaft in far enough to remove steering shaft inner race seat
and inner race. With ignition switch in "ACC" position, remove
ignition switch mounting screws and switch. Place Pivot Pin Remover
(J-21854-01 for Jeep) over pivot pin. Thread small portion of screw
firmly into pin.
11) Hold screw from turning with one wrench while turning nut
clockwise with a second wrench to withdraw pivot pin from support.
Remove opposite pivot pin in same manner. Use tilt release lever to
disengage lock shoes. Remove bearing housing assembly by pulling
upward to extend rack fully.
12) Move housing assembly left to disengage rack from
actuator. Rotate housing clockwise to free dimmer switch actuator rod.
Remove activator assembly. Remove coupling from lower end of steering
shaft. Double coupling is retained to shaft with a roll pin. Remove
shaft assembly from upper end.
CAUTION: DO NOT drop or bump steering shaft as plastic pins may shear.
13) Disassemble steering shaft assembly by removing center
spheres and anti-lash springs. See Fig. 9. Remove 4 bolts securing
support to lock plate. Remove support from end of column jacket.
Remove 2 attaching screws and shift gate from support (if necessary).
Dimmer switch is removed with support.

Page 1070 of 1378

$JEEP CHEROKEE 1988 Service Repair Manual \003 * S TE ER IN G U NIF O RM IN SPEC TIO N G UID ELIN ES * 1 988 J e ep C hero ke e GENERAL INFORMATION Steering, Suspension, Wheel Alignment, Wheels and Tires Mo$

Page 1079 of 1378

$JEEP CHEROKEE 1988 Service Repair Manual ��\ ��\ ��\ ��\ ��\ ��\ ��\ �� AIR RIDE SUSPENSION - WARNING LAMPS AIR RIDE SU$

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AIR RIDE SUSPENSION - WARNING LAMPS
AIR RIDE SUSPENSION - WARNING LAMP INSPECTION\
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Condition Code Procedure
Bulb burned out ......... A ............ Require replacement.
Warning light does
not come on during
bulb check ............. .. . Further inspection required to
determine cause.
Warning light flashes ... .. . Further inspection required to
determine cause.
Warning light is
intermittent ........... .. . Further inspection required to
determine cause.
Warning light stays
on after initial
bulb check ............. .. . Further inspection required to
determine cause.
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AIR RIDE SUSPENSION - WIRING HARNESSES
AIR RIDE SUSPENSION - WIRING HARNESS INSPECTION\
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Condition Code Procedure
Connector bent .......... A .. Require repair or replacement.
Connector broken ........ A .. Require repair or replacement.
Connector loose ......... A .. Require repair or replacement.
Damaged (cut, burned, or
chafed) ................ A .. Require repair or replacement.
Excessive resistance .... B .. Require repair or replacement.
Fuse blown .............. A ............ Require replacement.
Fusible link blown ...... A ............ Require replacement.
Open .................... A .. Require repair or replacement.
Poor ground ............. A .. Require repair or replacement.
Routed incorrectly ...... B .. Require rerouting according to
vehicle manufacturer's
specifications.
Shorted ................. A .. Require repair or replacement.
Terminal bent ........... A .. Require repair or replacement.
Terminal broken ......... A .. Require repair or replacement.
Terminal corroded ....... A .. Require repair or replacement.
Terminal loose .......... A .. Require repair or replacement.
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BALL JOINTS
Before requiring or suggesting ball joint replacement, the
approved OEM procedure must be used to measure ball joint wear. The
measurement(s) obtained, along with the vehicle manufacturer's
specifications, must be noted on the inspection report. Some states
require that these measurements also appear on the invoice.
NOTE: The term "perceptible movement," defined as any visible
movement in any direction, has been the industry standard
for determining the need for replacement of follower ball
joints. Some vehicle manufacturers are now publishing
specifications for follower ball joints that were

Page 1131 of 1378

$JEEP CHEROKEE 1988 Service Repair Manual \003 * S U SPEN SIO N U NIF O RM IN SPEC TIO N G UID ELIN ES * 1 988 J e ep C hero ke e GENERAL INFORMATION Steering, Suspension, Wheel Alignment, Wheels and Tires M$

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