1988 JEEP CHEROKEE lock

at road speeds, it may indicate that the ABS system has detected a
malfunction or has become inoperative. The system reverts to standard
non-anit-lock brakes. If both Red BRAKE light and Amber CHECK ANTI-
LOCK light are on, have vehicle serviced immediately.
Fig. 1: Instrument Panel Interior Controls
Courtesy of Chrysler Motors.
Fig. 2: Dash Gauges & Warning Lights (Gasoline Engines)
Courtesy of Chrysler Motors.

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97I0 02000: S H IF T IN TE R LO CK

1988 J e ep C hero ke e
NHTSA RECALL BULLETIN
Model(s): 1984-95 Jeep Cherokee
1993-95 Jeep Grand Cherokee
Campaign No: 97I002000
Number of Affected Vehicles: 2200000
Beginning Date of Manufacture: 1983 AUG
Ending Date of Manufacture: 1995 JUL
VEHICLE DESCRIPTION:
Multipurpose passenger vehicles equipped with automatic transmissions.
DESCRIPTION OF DEFECT:
This is not a safety recall in accordance with Federal Regulation 573.
However, it is deemed a safety improvement campaign by the agency.
Drivers can mistakenly step on the accelerator pedal when they intend
to step on the brake pedal.
CONSEQUENCE OF DEFECT:
Pedal misapplication by a driver can cause unintended acceleration.
CORRECTIVE ACTION
Dealers will install a shift interlock on the automatic transmission
of these vehicles.
Chrysler has decided to conduct a safety improvement campaign to
install a shift interlock on these vehicles. Owners can contact
Chrysler at 1-800-853-1403.
ADDITIONAL INFORMATION:
The National Highway Traffic Safety Administration operates Monday
through Friday from 8:00 AM to 4:00 PM, Eastern Time. For more
information call (800) 424-9393 or (202) 366-0123. For the hearing
impaired, call (800) 424-9153.

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STA R TE R - B O SC H/M IT S U BIS H I

1 988 J e ep C hero ke e
1988 Starters
BOSCH & MITSUBISHI
Jeep with 4.0L 6-Cyl.
DESCRIPTION
NOTE: Information on Jeep 2.5L starter not available from
manufacturer.
Bosch and Mitsubishi use a permanent magnet starter. A
planetary gear train transmits power between starter motor and pinion
shaft. The starter magnetic field is produced by 6 permanent magnets.
The Mitsubishi starter is a 12-volt unit that has the solenoid mounted
on the starter housing. See Fig. 3.
TROUBLE SHOOTING
NOTE: See the TROUBLE SHOOTING - BASIC PROCEDURES article
in the GENERAL TROUBLE SHOOTING section.
TESTING (ON VEHICLE)
AMPERAGE DRAW TEST
NOTE: Engine should be at operating temperature before performing
this test. Heavy duty oil or a tight engine will increase
starter draw amperage. Tests are performed with standard
volt-ammeter tester.
1) Connect tester and remote starter switch. Set voltmeter
selector to 16-volt position. Select function to 0-500-amp scale.
Connect voltmeter leads to corresponding polarity battery terminals.
2) Connect ammeter leads to corresponding battery terminals.
Disconnect coil wire from distributor cap and attach to ground to
prevent engine from starting.
3) Crank engine and observe exact reading on voltmeter. Stop
cranking engine. Turn tester control knob clockwise until voltmeter
reads exactly the same as when engine was cranked with remote starter
switch. Ammeter should indicate starter draw of about 150-220 amps.
STARTER RESISTANCE TEST
Use a voltmeter that will indicate tenths of a volt. Without
disconnecting any starter connections, perform the following
resistance tests:
1) Perform following tests with engine cranking and all
terminals connected. Connect a voltmeter at following locations:
* Positive lead to battery positive post and negative lead
to battery terminal on starter.
* Positive lead to starter housing and negative lead to
negative post on battery.
* Positive lead to battery negative post and negative lead
to battery cable connector on engine block.
2) Each of these 3 connections should show a voltmeter

reading of .2 volt or less. If reading exceeds .2 volt, clean or
repair cables and connections in circuit. Connect a voltmeter at
following locations:
* Positive lead to battery positive post and negative lead
to cable clamp.
* Positive lead to battery negative post and negative lead
to cable clamp.
3) If reading is other than zero on voltmeter, clean or
repair cables and connections in circuit. Connect a voltmeter at
following location:
* Positive lead to battery positive post and negative lead
to starter solenoid lead to the field coils.
4) If reading exceeds .3 volt, clean or repair cables and
connections in circuit.
SOLENOID TEST
1) Connect a heavy jumper wire on starter relay between
battery and solenoid terminals. If engine cranks, solenoid is okay. Go
to RELAY TEST .
2) If engine does not crank, check wiring and connections
from relay to starter. Repair or replace as necessary. If engine still
fails to crank, starter is defective.
RELAY TEST
1) On automatic transmission/transaxle vehicles, put gear
selector in "NEUTRAL" or "PARK". On manual transmission/transaxle
vehicles, put gear selector in "NEUTRAL". Set parking brake and block
wheels. DO NOT remove relay connector. Using a 12-volt test light,
check for battery voltage between starter relay battery terminal and
ground.
2) Use a jumper wire on starter relay between battery and
ignition terminals. If engine cranks starter relay is good. If starter
does not crank go to next step.
3) Connect another jumper wire to starter relay between
ground terminal and ground. Repeat above test. If engine cranks,
starter relay is good. Inspect transmission linkage for improper
adjustment (automatic transmission), defective neutral safety switch
(automatic transmission) or poor ground connection between relay
housing and mounting surface.
TESTING (ON BENCH)
STARTER SOLENOID
1) With starter removed, disconnect field coil wire from
field coil terminal on starter. Using an ohmmeter, check for
continuity between solenoid and field coil terminals.
2) Check for continuity between solenoid terminal solenoid
housing. Continuity should be present in both tests. If continuity is
present, solenoid is good. If no continuity is present, replace
solenoid. Reconnect field coil wire to field coil terminal.
ARMATURE FOR SHORT CIRCUIT
Place armature in a growler and hold a thin steel blade
parallel 3/16" above core while rotating armature slowly. If armature

1) Voltage is applied to ignition switch through fuse "B" at
all times. Voltage is also applied at all times to the contact on
starter solenoid, terminal "B".
2) With ignition switch in "START" position, battery voltage
is applied from fusible link "B", to ignition switch, and to the coil
of the starter relay to ground.
3) The coil of the starter relay engages closing relay
contacts. With start relay contacts closed, battery voltage is applied
to starter solenoid. Both solenoid windings are energized.
4) The pull-in and hold-in windings work together to
magnetically pull starter gear into ring gear. At the same time the
plunger also closes solenoid switch contacts in the starter solenoid.
Full battery voltage is now applied directly to the starter motor and
it cranks the engine.
NOTE: Use the amperage draw reading after the starter motor has
obtained its maximum RPM.
TROUBLE SHOOTING
* Check the battery for a broken or cracked casing.
* Check that all connections to battery and starter are clean
and tight.
* Check electrolyte level of battery. Levels that are too high
or too low may cause poor starter motor performance.
* Check battery by measuring specific gravity of electrolyte in
each cell with a hydrometer.
NOTE: No further testing or troubleshooting procedures available
from manufacturer.
STARTER SPECIFICATIONS
STARTER MOTOR SPECIFICATIONS TABLE








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Application Specification
Cold Cranking Voltage (Minimum) ................ 9.6 Volts
Cold Cranking Amps
Cherokee & Wagoneer ........................... 350 Amps
Comanche ...................................... 120 Amps









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TORQUE SPECIFICATIONS
TORQUE SPECIFICATIONS TABLE








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Application Ft. Lbs. (N.m)
Left Side Engine Mount-to-Block .................. 40 (54)
Left Side Engine Mount-to-Bell Housing Bolt ...... 35 (47)
Left Side Engine Mount-to-Frame Sill Bolt ........ 48 (65)
Starter Mounting Bolts ........................... 37 (50)
INCH Lbs. (N.m)
Starter Relay "B+" Terminal Nut ................... 18 (2)









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STE ER IN G C O LU M N S W IT C HES

1988 J e ep C hero ke e
1988 STEERING
Jeep Steering Column Switches
All Models
REMOVAL & INSTALLATION
TURN SIGNAL & HAZARD FLASHER SWITCHES
Removal & Installation
1) Place front wheels in straight-ahead position. Disconnect
battery negative cable. Remove the steering wheel. Refer to the
STEERING WHEEL & HORN REMOVAL article.
2) On models with A/T, place selector lever in "PARK"
position. Remove selector lever retaining pin and lever. Using 2
screwdrivers, remove lock plate cover. On models with tilt column,
remove tilt lever.
3) Using Plate Compressor (J-23653-A), compress lock plate.
If shaft has metric threads, use Metric Forcing Screw (J-23653-4)
prior to installing compressor on shaft. Remove and discard lock plate
snap ring. Remove plate compressor
NOTE: The lock plate is under strong spring tension. DO NOT
attempt to remove snap ring without using lock plate
compressor.
4) Remove lock plate, canceling cam, upper bearing preload
spring, spring seat and bearing race (thrust washer on some models).
Depress hazard warning switch while unscrewing from column.
5) On vehicles with A/T, use a paper clip to compress lock
tab retaining shift quadrant light wire in connector block. Disconnect
wire. On all models, remove turn signal lever attaching screw and
lever.
6) On vehicles with cruise control, disconnect 2 of 4 wires
at switch connector. Fold wires back along harness. Tape wires to
harness. Tape a string to harness to aid in removal.
7) Disconnect turn signal switch wire harness at bottom of
steering column. Tape around turn signal switch harness connector to
aid in removal. Remove turn signal switch attaching screws. Remove
switch. To install, reverse removal procedure.
LOCK CYLINDER
Removal
1) Remove horn button and steering wheel. Refer to the
STEERING WHEEL & HORN REMOVAL article. Remove turn signal switch.
Remove key warning buzzer switch and contacts as an assembly, using
needle-nose pliers.
2) On models with standard column, turn ignition lock
cylinder (clockwise) 2 detent positions beyond the "OFF/LOCK"
position. On models with tilt column, turn lock cylinder to "LOCK"
position. On all models, compress lock cylinder retaining tab and
remove lock cylinder from housing. See Fig. 1.

Fig. 1: Removing Jeep Lock Cylinder
Courtesy of Chrysler Motors
Installation
1) To install, insert key in lock cylinder. Hold cylinder
sleeve while turning key clockwise until key stops. Align lock
cylinder retaining tab with keyway in housing. Insert cylinder into
housing.
2) Push lock cylinder inward until it contacts lock sector.
Rotate cylinder to engage it with lock sector. Push lock cylinder
inward until cylinder retaining tab engages in housing groove. To
complete installation, reverse removal procedure.
IGNITION SWITCH
Removal (Cherokee, Wagoneer & Wrangler)
Remove lower instrument panel trim panel. Insert key in lock

cylinder. Turn cylinder to "OFF-UNLOCK" position. Disconnect switch
from remote rod. Disconnect harness connectors at switch. Remove
switch.
Installation
Move switch slider to "ACC" position. Engage remote rod in
switch slider. Position switch on column, taking care not to move
slider. Hold key in "ACC" position while pushing switch down slightly
to remove slack in actuator rod. Install attaching screws. Connect
harness connectors.
IGNITION SWITCH
Removal (Comanche & Grand Wagoneer)
Remove lower instrument panel trim panel. Insert key in lock
cylinder. Turn cylinder 2 positions beyond the "OFF-UNLOCK" position.
Disconnect switch from remote rod. Disconnect harness connectors at
switch. Remove switch.
Installation
Move switch slider to "ACC" position. Move switch slider back
2 clicks to "OFF-UNLOCK" position. Engage remote rod in switch slider.
Position switch on column. DO NOT move slider while positioning
switch. Install attaching screws. Connect harness connectors.
Fig. 2: Exploded View of Jeep Steering Column Switch Assemblies
Courtesy of Chrysler Motors
TROUBLE SHOOTING
Refer to TROUBLE SHOOTING - BASIC PROCEDURES article in the
GENERAL TROUBLE SHOOTING section.