1988 JEEP CHEROKEE battery
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![JEEP CHEROKEE 1988 Service Repair Manual Clean Battery and Battery Terminals
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\](/manual-img/16/57037/w960_57037-994.png "JEEP CHEROKEE 1988 Service Repair Manual Clean Battery and Battery Terminals
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Clean Battery and Battery Terminals
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Inspect Brake System
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Check Operation of Horn, Wipers/Washers & All Exterior Lights
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Inspect Condition of Wiper Blades
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Check Headlight Alignment
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Check Seat Belt Webbing and Release Mechanisms
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Check Parking Brake Operation
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Check Shift/Clutch Interlock Operation
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Inspect C/V Joint boots (4WD)
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Inspect Underside of Vehicle (Bolts & Threaded Fasteners)
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Check/Lube Manual Steering Gear
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Check Drive Shaft Seals
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Lubricate Ball Joints, Steering Linkage & Suspension
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Lube Drive Shaft U-Joints and Slip Splines
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Lube Front Axle Drive Joint and Pivot Bearings (4WD)
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Inspect Front Wheel Bearings (4WD)
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Lubricate Weatherstripping with Silicone
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Lubricate Door Hinges
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Lubricate Door Locks
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Check Body Drain Holes
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Rotate Tires and Adjust Air Pressure
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Replace
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Engine Oil
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Oil Filter
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Flush and Fill Engine Coolant, if not done in last 24 months
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Lubrication Specifications
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Application Specification
Automatic Transmission .......................... Dexron-IIE ATF
Brake Master Cylinder .......... DOT 3 (SAE J-1703F) Brake Fluid
Engine Coolant ........... Alugard 340-2 & Water (50/50 Mixture)
Engine Oil (
1)
Gasoline Engine
Temperature Range
Above 30
F (-1
C) ........ SAE 20W-40 Or 20W-50 API SH/CD
Above 0
F (-18
C) ......... SAE 10W-30 Or 10W-40 API SH/CD
Less Than 60
F (16
C) ............... SAE 5W-30 API SH/CD
Page 997 of 1378
1988
Selec-Trac ................................. 3.0 Pts. (1.4L)
Command-Trac ............................... 2.2 Pts. (1.0L)
Drive Axles (
3)
Front ........................................ 2.5 Pts. (1.2L)
Front (Disconnect Housing) .................. 5.0 Ozs. (0.15L) \
Rear ......................................... 2.5 Pts. (1.2L)
Rear (Trac-Lok) (
4) .......................... 2.5 Pts. (1.2L)
(
1) - Capacities are recommended or calculated levels. Always use
dipstick (if available) to measure level.
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2) - Includes 2.3 qts. for coolant recovery bottle.
(
3) - Fill to bottom of filler plug hole.
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4) - Add 4 ozs. (118 ml) of Limited-Slip differential lubricant
additive first, then add new fluid.
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112,500 MILE (180,000 KM) SERVICE
112,500 MILE (180,000 KM) SERVICE \
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Service Or Inspect
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Verify Last Major Service Was Performed
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Check Fluid Levels
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Check Cooling System Hoses and Clamps
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Check Coolant Strength
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Clean Battery and Battery Terminals
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Check Exhaust System & Heat Shielding
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Check Operation of Horn, Wipers/Washers & All Exterior Lights
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Inspect Condition of Wiper Blades
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Check Headlight Alignment
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Check Seat Belt Webbing and Release Mechanisms
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Check Parking Brake Operation
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Check Shift/Clutch Interlock Operation
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Inspect C/V Joint boots (4WD)
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Inspect Underside of Vehicle (Bolts & Threaded Fasteners)
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Check/Lube Manual Steering Gear
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Check Drive Shaft Seals
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Lubricate Ball Joints, Steering Linkage & Suspension
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Lube Drive Shaft U-Joints and Slip Splines
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Lube Front Axle Drive Joint and Pivot Bearings (4WD)
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Lube Parking Brake Ratio Lever Pivot
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(1) - Capacities are recommended or calculated levels. Always use
dipstick (if available) to measure level.
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2) - Includes 2.3 qts. for coolant recovery bottle.
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3) - Fill to bottom of filler plug hole.
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4) - Add 4 ozs. (118 ml) of Limited-Slip differential lubricant
additive first, then add new fluid.
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120,000 MILE (192,000 KM) SERVICE
120,000 MILE (192,000 KM) SERVICE \
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Service Or Inspect
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Verify Last Major Service Was Performed
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Check Fluid Levels
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Check Cooling System Hoses and Clamps
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Check Coolant Strength
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Check Accessory Drive Belts
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Check Exhaust System & Heat Shielding
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Clean Battery and Battery Terminals
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Adjust Drive Belt Tension
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Accessory Drive Belts
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Adjust Idle - Propane Method (1987-88)
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Ignition Timing
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Lubricate Manifold Heat Control Valve (3.9L & 5.2L Engines)
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Clean PCV Breather (3.9L & 5.2L Engines)
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Clean EGR Passages (if equipped)
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Inspect C/V Joint boots (4WD)
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Inspect Underside of Vehicle (Bolts & Threaded Fasteners)
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Check/Lube Manual Steering Gear
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Check Drive Shaft Seals
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Lubricate Ball Joints, Steering Linkage & Suspension
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Lube Drive Shaft U-Joints and Slip Splines
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Lube Front Axle Drive Joint and Pivot Bearings (4WD)
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Inspect Front Wheel Bearings (4WD)
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Clean and Lubricate Crankcase Inlet Air Cleaner
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Suspension Bushings, Springs, Arms & Rear Jounce Bumpers
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Page 1005 of 1378
\003
SEA TS - P O W ER
1988 J e ep C hero ke e
1988 Power Seats
JEEP
Cherokee, Wagoneer,
Grand Wagoneer
DESCRIPTION
A 3 armature permanent magnet reversible motor is coupled
through cables to rack and pinion assemblies, located in the tracks.
This system provides 6 different movement directions. Circuit is
protected by a 30-amp circuit breaker on the fuse block.
TESTING
PRELIMINARY CHECKS
Ensure battery is fully charged and all electrical
connections are clean and tight. Turn on dome light. Apply switch to
the inoperative position. If dome light dims, seat motion is
attempting to function, indicating mechanical failure. Check and
repair as necessary. If dome light does not dim, proceed with the
following tests.
HARNESS VOLTAGE
Disconnect switch harness connector, located under seat.
Connect ground lead of test light to terminal No. 2. Touch other lead
of test light to terminal No. 1. See Fig. 1. If test light comes on,
circuit is good. If test light does not come on, check circuit breaker
and harness. If harness and circuit breaker checks good, perform drive
motors check.
Fig. 1: Seat Switch Terminal Identification
Courtesy of Chrysler Motors.
DRIVE MOTORS
Page 1014 of 1378
\003
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
Page 1015 of 1378
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
Page 1020 of 1378
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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Page 1022 of 1378
STA R TE R R EM OVA L & IN STA LLA TIO N
1988 J e ep C hero ke e
1988 Starters
REMOVAL
All Jeep Models
REMOVAL & INSTALLATION
JEEP
Disconnect battery ground cable. Remove electrical wiring
from starter or solenoid (Bosch). Remove starter mounting bolts.
Remove starter and bracket from bellhousing. To install, reverse
removal procedure. Tighten to specifications.
TORQUE SPECIFICATIONS
TORQUE SPECIFICATIONS TABLE \
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Application Ft. Lbs. (N.m)
Jeep ............................................. 37 (50)
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