Contents Section: Fuses & Circuit Breakers All sections

Maintenance Information Jeep Wrangler I

Fuses & Circuit Breakers 8 illustrations ~2160 words

VIN LOCATION

The Vehicle Identification Number (VIN) is located on the left side of the dash panel at the base of the windshield. The VIN chart explains the code characters.

VIN CODE ID EXPLANATION

Numbers preceding the explanations in the legend below refer to the sequence of characters as listed on VIN identification label. See VIN example below.

VIN Code ID Explanation. Scheme 1

Scheme 1: VIN Code ID Explanation

SEVERE & NORMAL SERVICE DEFINITIONS

Note. Use the Severe Service schedule if the vehicle to be serviced is operated under ANY (one or more) of these conditions

Service is recommended at mileage intervals based on vehicle operation. Service schedules are based on the following primary operating conditions.

Severe Service

  1. Short Trips (About 15 Miles)
  2. Desert Or Cold Climate Operation
  3. Towing Or Heavily Loaded
  4. Severe Dust Conditions
  5. Hot Weather, Stop-And-Go Driving
  6. Sustained High Speed Driving
  7. Extensive Idling Conditions (Taxi Or Delivery-Type Service)
  8. Off Road Driving

Normal Service

  1. Driven More Than 10 Miles Daily
  2. No Severe Service Operating Conditions

SERVICE LABOR TIMES

Note. For 1990 and newer vehicles, labor times are provided, where available, within appropriate SERVICE INTERVAL table in SCHEDULED SERVICES article.

Scheme 2

Scheme 2: SERVICE POINT LOCATIONS

Scheme 3

Scheme 3: ADDITIONAL SERVICE INFORMATION

Note. For more information regarding jacking and hoisting refer to the JACKING & HOISTING article in the WHEEL ALIGNMENT section.

Scheme 4

Scheme 4: IDENTIFICATION LABEL LOCATIONS

TIRE INFLATION

Tire specification decal is located in the glove box.

1989-92

Tighten lug nuts in crisscross pattern to 80-110 ft. lbs. (109-150 N.m).

1993

Tighten lug nuts in crisscross pattern to 95 ft. lbs. (129 N.m).

1994-95

Tighten lug nuts in crisscross pattern to 85-110 ft. lbs. (115-149 N.m).

BATTERY SPECIFICATIONS

CAUTIONWhen battery is disconnected, vehicles equipped with computers may lose memory data. When battery power is restored, driveability problems may exist on some vehicles. These vehicles may require a relearn procedure. See COMPUTER RELEARN PROCEDURES article in the GENERAL INFORMATION section.

All models use group 55 battery.

SUPPLEMENTAL RESTRAINT SYSTEM (SRS) AIR BAG SYSTEM

Note. See the AIR BAG RESTRAINT SYSTEM article in the ACCESSORIES/SAFETY EQUIPMENT Section.

Note. The SRS has no user-servicable parts. Always have servicing done by an authorized dealer.

Note. When performing maintenance on air bag equipped vehicles always observe proper safety precautions.

WARNINGTo avoid injury from accidental air bag deployment, read and carefully follow all warnings and service precautions. See appropriate AIR BAG RESTRAINT SYSTEM article in the ACCESSORIES/SAFETY EQUIPMENT section.
CAUTIONDisconnect negative battery cable before servicing any air bag system, steering column or passenger side dash component. After any repair, turn ignition key to the ON position from passenger's side of vehicle in case of accidental air bag inflation

ANTI-LOCK BRAKE SYSTEM (ABS)

CAUTIONNever mix different diameter tires. On loose or uneven surfaces, the ABS system may require longer stopping distances than conventional brake systems. Exercise caution when removing mud or snow from the wheels so as not to damage the ABS wiring or speed sensors.

BATTERY WARNING

WARNINGWhen battery is disconnected, vehicles equipped with computers may lose memory data. When battery power is restored, driveability problems may exist on some vehicles. These vehicles may require a relearn procedure. See appropriate COMPUTER RELEARN PROCEDURES article in the GENERAL INFORMATION section below.

REPLACING BLOWN FUSES

Before replacing a blown fuse, remove ignition key, turn off all lights and accessories to avoid damaging the electrical system. Be sure to use fuse with the correct indicated amperage rating. The use of an incorrect amperage rating fuse may result in a dangerous electrical system overload.

BRAKE PAD WEAR INDICATOR

Indicator will cause a squealing or scraping noise, warning that brake pads need replacement.

CATALYTIC CONVERTER

Continued operation of vehicle with a severe malfunction could cause converter to overheat, resulting in possible damage to converter and vehicle.

COOLANT (PROPYLENE-GLYCOL FORMULATIONS)

CAUTIONTo avoid possible damage to vehicle use only ethylene-glycol based coolants with a mixture ratio from 44-68% anti-freeze. DO NOT use 100% anti-freeze as it will cause the formation of cooling system deposits. This results in coolant temperatures of over 300° F (149°C) which can melt plastics. 100% anti-freeze has a freeze point of only -8° F (-22°C).
CAUTIONPropylene-Glycol Mixtures has a smaller temperature range than Ethylene-Glycol. The temperature range (freeze-boil) of a 50/50 Anti-Freeze/Water Mix is as follows: Propylene-Glycol -26° F (-32°C) - 257° F (125°C) Ethylene-Glycol -35° F (-37°C) - 263° F (128°C)
CAUTIONPropylene-Glycol/Ethylene-Glycol Mixtures can cause the destabilization of various corrosion inhibitors. Also Propylene-Glycol/Ethylene-Glycol has a different specific gravity than Ethylene-Glycol coolant, which will result in inaccurate freeze point calculations.

ELECTROSTATIC DISCHARGE SENSITIVE (ESD) PARTS

WARNINGMany solid state electrical components can be damaged by static electricity (ESD). Some will display a warning label, but many will not. Discharge personal static electricity by touching a metal ground point on the vehicle prior to servicing any ESD sensitive component.

ENGINE OIL

CAUTIONNever use non-detergent or straight mineral oil.

FUEL SYSTEM SERVICE

WARNINGRelieve fuel system pressure prior to servicing any fuel system component (fuel injection models).

HALOGEN BULBS

WARNINGHalogen bulbs contain pressurized gas which may explode if overheated. DO NOT touch glass portion of bulb with bare hands. Eye protection should be worn when handling or working around halogen bulbs.

RADIATOR CAP

CAUTIONAlways disconnect the fan motor when working near the radiator fan. The fan is temperature controlled and could start at any time even when the ignition key is in the OFF position. DO NOT loosen or remove radiator cap when cooling system is hot.

RADIATOR FAN

WARNINGKeep hands away from radiator fan. Fan is controlled by a thermostatic switch which may come on or run for up to 15 minutes even after engine is turned off.

OIL FILTER

CAUTIONVerify that proper Oil Filter is being used. Filters with metric threads (M20 x 1.5) must be used with some engines. Other engines use SAE type (3/4" x 16) threads, and must use an oil filter with these threads. Possible engine damage can occur with improper oil filter.

TRANSFER CASE

CAUTIONBoth drive axles are disengaged when transmission gear is in Neutral position. Always set parking brake when leaving vehicle unattended.
CAUTIONNever attempt to engage Low range when vehicle is moving faster than 2-3 MPH (3-5 KM/H). Transfer case damage may result.

COMMAND-TRAC (4WD)

CAUTIONNEVER operate a Command-Trac vehicle in 4WD on dry, hard-surfaced roads for a sustained period. Use 4L only when needed for added pulling power. Operating vehicle in 4WD mode on such roads will cause stress and possible damage to components, as well as make shifting difficult. To reduce shifting effort, drive vehicle in Reverse for a few feet, or drive off hard-surfaced road momentarily to allow tire slippage.

FRONT AND REAR DIFFERENTIALS (4WD)

CAUTIONDO NOT use water, steam, kerosene or gasoline for flushing a differential. ONLY use a flushing oil.

TRAC-LOK DIFFERENTIALS (4WD)

CAUTIONDO NOT flush a rear axle Trac-Lok differential. Trac-Lok differentials may be cleaned only by disassembling the unit and wiping the components with clean, lint-free cloth.
CAUTIONNEVER attempt to engage Low range when vehicle is moving faster than 2-3 MPH, as transfer case damage may result.

WHEEL & TIRE WARNINGS

CAUTIONReplacing original tires with different size tires may result in false speedometer and odometer indications. Check with dealer before using different size tires on vehicle.
CAUTIONEnsure all 4 wheels on vehicle have same tire size, type and circumference in order to provide proper vehicle handling. DO NOT mix radial-ply with bias-ply or bias-belted tires. On 4WD vehicles, if tire size, type and circumference on all 4 wheels are not the same, gear shifting will be adversely affected and can damage transfer case.
CAUTIONTemporary-use spare tires are for emergency use only. DO NOT drive vehicle faster than 50 MPH or more than 100 miles when using spare tire. DO NOT operate vehicle in 4WD mode when using spare tire, as damage to transfer case can result. Temporary-use spare tires have a total tread life of 3,000 miles.

WARRANTY INFORMATION

CAUTIONDue to the different warranties offered in various regions and the variety of after-market extended warranties available, please refer to the warranty package that came with the vehicle to verify all warranty options.

12-MONTH/12,000-MILE WARRANTY

Manufacturer warrants to the original purchaser that vehicle is free from defects under normal operation and service. Warranty is for 12 months or 12,000 miles, whichever occurs first.

36-MONTH/36,000-MILE WARRANTY

Manufacturer warrants to the original purchaser that vehicle is free from defects under normal operation and service. Warranty is for 36 months or 36,000 miles, whichever occurs first.

BASIC NEW CAR LIMITED WARRANTY (1989-94)

Everything is covered for 12 months or 12,000 miles, whichever occurs first. Warranty covers repairs to any vehicle components (tires excluded), which have proven defective in material and workmanship in normal use. Warranty repairs (parts and labor) will be made by the dealer at no charge using new or remanufactured parts.

POWERTRAIN WARRANTY

Upon expiration of the 12-month/12,000-mile Basic New Car Limited Warranty, the powertrain warranty covers components listed below for 7 years or 70,000 miles. This warranty is subject to a 100 deductible for each repair visit. The warranty also covers cost of towing to the nearest Chrysler dealer if vehicle can't be driven due to failure of a covered powertrain part.

  1. Engine Cylinder block and all internal parts, seals and gaskets.
  2. Transmission Transmission case and all internal parts, seals and gaskets, oil pan, torque converter with starter ring gear and flexplate, clutch housing and flywheel.
  3. FWD Components Transaxle case and all internal parts, seals and gaskets, oil pan and differential cover, torque converter and drive plate with starter ring gear, clutch housing, flywheel and drive shaft assemblies
  4. RWD Components Drive axle housing and all internal parts, seals and gaskets; axle shaft bearings and seals; drive shaft assemblies; universal joints and yokes.

OWNER'S CHOICE COVERAGE

Beginning in 1992, Chrysler offers a choice of new car coverage. At the time of purchase, owner must choose either the 12-month/12,000-mile warranty with 7-year/70,000-mile Powertrain Warranty or the 36-month/36,000-mile Basic New Car Warranty covering any item that's defective in material, workmanship or factory preparation for 36 months or 36,000 miles, whichever occurs first. Under the 36-month/36,000 mile warranty, the following items are only warranted for the first 12 months or 12,000 miles, whichever occurs first

  1. Light Bulbs
  2. Seat Covers And Carpets
  3. Brakes (Rotors, Pads, Linings And Drums)
  4. Fuses
  5. Wiper Blades
  6. Adjustments
  7. Battery
  8. Drive Belts

AIR BAG LIMITED WARRANTY

Air bag system components listed below are covered for 36 months or 36,000 miles, whichever occurs first. There is no deductible cost.

  1. Air Bag Module
  2. Clockspring Switch Assembly
  3. Front Impact Sensor
  4. Air Bag System Diagnostic Module

CUSTOMER ONE CARE WARRANTY (1995)

All 1995 Chrysler Corporation vehicles are covered by the Customer One Care Warranty, which provides 3 year/36,000 mile coverage.

Warranty coverage can be transferred to at no cost to second owner and begins on the earlier of two start dates

  1. Date original customer took delivery.
  2. Date vehicle was put into service (Demo).

Warranty does not cover any repair due to poor or improper maintenance. Warranty does not cover costs of damage due to use of contaminated fluids and/or the use of fluids not recommended in the vehicles owners manual.

Warranty does not cover any costs of scheduled maintenance, or the cost of worn wiper blades, worn brake pads/linings or worn clutch linings. These are normal maintenance parts that all vehicles require.

BASIC NEW CAR LIMITED WARRANTY (1995)

Warranty covers any repairs to vehicle components (tires excluded) which have proven defective in material and workmanship during normal use. Warranty repairs (parts and labor) will be made by the dealer at no charge. Beginning at warranty start date, warranty lasts for 36 months or 36,000 miles, whichever occurs first.

Warranty covers every Chrysler supplied part of vehicle EXCEPT its tires and OKI cellular telephone (Tires and Telephone are covered by separate warranties offered by their manufacturers).

Under the 36-month/36,000-mile warranty, the following items are only warranted for the first 12 months or 12,000 miles, whichever occurs first

  1. Brakes (Rotors, Pads, Linings & Drums)
  2. Wiper Blades
  3. Clutch Discs

EMISSION CONTROL SYSTEMS LIMITED WARRANTY

Manufacturer warrants that vehicle is designed, built and equipped to conform with all applicable regulations of the EPA. It further warrants that vehicle is free from defects, which would cause it to fail to conform with EPA regulations. Warranty is for 5 years or 50,000 miles, whichever occurs first.

Warranty does not cover the following items, which are replaced during scheduled maintenance: positive crankcase ventilation systems valve, spark plugs, hoses, belts, gaskets, filters and wiring. The following are also not covered under this warranty: tune-ups, fuel system cleaning, ignition timing, misuse of vehicle and accidents.

Note. Warranty does not cover any vehicle on which the mileage cannot be readily determined.

FEDERAL EMISSIONS "PERFORMANCE" WARRANTY

If vehicle is maintained and operated in accordance with instructions provided in owner's manual and, if during the 5-year/50,000-mile warranty period, it fails to pass an emission inspection, manufacturer will repair or replace any component necessary to conform vehicle to the applicable emissions standards.

To obtain warranty service, owner should present to the repairing dealer, a copy of state inspection report, properly filled out, showing the required standard and failure mode.

If a claim under this warranty is denied, AMC Corporation will notify the owner within 30 days, in writing, the reasons for denial of the claim. If the owner is not provided with a written denial within 30 days from the time the vehicle is first presented for repair, or within the time period allowed by law for repair of the vehicle, repairs will be covered under the terms of the warranty. The following items are covered under this warranty.

  1. Fuel Metering System
  2. Ignition Spark Advance/Retard System
  3. Evaporative Emission Control System
  4. Positive Crankcase Ventilation System (PCV)
  5. Exhaust Gas Recirculation System (EGR)
  6. Air Injection System
  7. Electronic Engine Controls
  8. Catalyst System
  9. Miscellaneous Items Used In Above Systems
  10. Air Cleaner Vapor Containment Door System
  11. Vapor Storage Canister And Controls

The following components are covered under this warranty.

  1. Engine
  2. Transmission/Transfer Case
  3. Drive Shaft/Drive Axle (RWD And 4WD)

On 1989-90 models, warranty is for 5 years or 50,000 miles, whichever occurs first. On 1991-94 models, warranty is for 7 years or 70,000 miles, whichever occurs first, and can be transferred to the second buyer.

CORROSION WARRANTY

Warranty covers perforation (rusted through) in sheet metal parts due to corrosion. On 1991-95 models, warranty can be transferred to the second buyer. Warranty has 2 different time-and-mileage limits.

  1. Covers any sheet metal panel for 36 months regardless of mileage.
  2. Covers outer-body sheet metal panels for 7 years or 100,000 miles, whichever occurs first.

ROADSIDE ASSISTANCE (1995)

Included in the Customer One Care Warranty is 24 Hour Roadside Assistance coverage, which provides the following services

  1. Flat Tire Service
  2. Out of Gas
  3. Battery Jump Assistance
  4. Lockout Service
  5. Towing Service

Note. 24 Hour Roadside Assistance phone number is 800-521-2779

ELECTRICAL FAILURE

If an electrical device stops working with ignition and control switches in the ON positions, check for blown fuse in the appropriate circuit.

Scheme 5

Scheme 5: FUSE PANEL IDENTIFICATION (1989-91)

Fuse & Circuit Breaker Identification

  1. 1 - 15 Amp (Lt. Blue) Turn Signals, Back-Up Lights
  2. 2 - 20 Amp (Yellow) Courtesy Light, Cargo Light, Radio (1991)
  3. 3 - 15 Amp (Lt. Blue) Hazard Warning, Stoplights, Underhood Light
  4. 4 - 25 Amp (Natural) Rear Window Defogger
  5. 5 - 25 Amp (Natural) Blower Motors
  6. 6 - 15 Amp (Lt. Blue) Gauge Package, Seat Belt Indicators, Defogger Switch, Tachometer, Indicator Lights
  7. 7 - 6.7 Amp (Circuit Breaker) (1989) Windshield Wipers 5.3 Amp (Circuit Breaker) (1990-91) Windshield Wipers, Washers
  8. 8 - 20 Amp (Yellow) Parking Lights, Turn Signals
  9. 9 - 5 Amp (Tan) Instrument Panel Illumination Lights
  10. 10 - 30 Amp (Green) Cigarette Lighter Cruise Control Radio Rear Window Washer (1990)
  11. 11 - 20 Amp (Yellow) (1990-91) Rear Window Wiper Rear Window Washer (1991)
  12. 12 - 20 Amp (Yellow) (1991) Horn

Scheme 6

Scheme 6: POWER DISTRIBUTION CENTER IDENTIFICATION (1991)
WARNINGAlways disconnect battery ground cable before servicing "high-current fuses. It is recommended that "high-current" fuses be replaced by a qualified technician.
  1. 1 - 30 Amp (Green) Fuel System ECU
  2. 2 - 50 Amp (Red) Alternator Power 1
  3. 3 - 50 Amp (Red) Fuse Block
  4. 4 - 40 Amp (Orange) Ignition System
  5. 5 - 20 Amp (Yellow) Fog Lamps
  6. 6 - 50 Amp (Red) Alternator Power 2
  7. 7 - 30 Amp (Green) Headlamp System
  8. 8 - 20 Amp Ignition Off Draw
  9. 9 - Not Used
  10. 11 - Not Used
  11. 10 - Not Used
  12. 12 - Not Used
  13. 13 - Not Used
  14. 14 - Not Used
  15. 15 - Not Used
  16. 16 - Not Used

Relay Identification

  1. A - Not Used
  2. B - Fuel Pump Relay
  3. C - Air Conditioning Relay
  4. D - Auto Shutdown Relay
  5. E - Starter Relay
  6. F - Fog Lamp Relay
  7. G - Not Used

Scheme 7

Scheme 7: FUSE PANEL IDENTIFICATION (1992-95)
  1. 1 - 20 Amp (Yellow) Rear Window Wiper, Washer
  2. 2 - Not Used
  3. 3 - 15 Amp (Lt. Blue) Stoplights, Buzzer
  4. 4 - 15 Amp (Lt. Blue) Turn Signals
  5. 5 - 10 Amp (Red) Automatic Shutdown Relay, Fuel Pump Relay (1993-95) Engine Control Module (1993-95)
  6. 6 - 25 Amp (Natural) Heated Rear Window
  7. 7 - 30 Amp (Lt. Green) (1992) Cigarette Lighter and ACC 20 Amp (Yellow) (1993-95) Cigarette Lighter Radio, Radio Illumination
  8. 8 - 20 Amp (Yellow) (1992) Running Lights, Exterior Lights 20 Amp (Yellow) (1993-95) Parking Lights, Key-In Warning Switch, Panel Lights Radio Relay, Headlight Switch, Side Marker Lights
  9. 9 - 15 Amp (Lt. Blue) Buzzer, Gauges, Warning Lights, Relays, Back-up Lamps Key-In Switch
  10. 10 - 5 Amp (Tan) Instrument Panel Illumination Lights
  11. 11 - 5.3 Amp (Circuit Breaker) Windshield Wipers Windshield Washers
  12. 12 - 25 Amp (Natural) Heater and Air Conditioner

Scheme 8

Scheme 8: POWER DISTRIBUTION CENTER IDENTIFICATION (1992-95)
WARNINGAlways disconnect battery ground cable before servicing "high-current fuses. It is recommended that "high-current" fuses be replaced by a qualified technician.
  1. 1 - 30 Amp (Green) Fuel System ECU
  2. 2 - 50 Amp (Red) Charging Circuit
  3. 3 - 50 Amp (Red) Battery ACC Feed
  4. 4 - 40 Amp (Amber) Ignition System
  5. 5 - 20 Amp (Yellow) Hazard Flasher
  6. 6 - 50 Amp (Red) Charging Circuit
  7. 7 - 30 Amp (Green) Headlamp System
  8. 8 - 20 Amp Ignition Off Draw and Horn
  9. 9 - 40 Amp (Amber) ABS Pump Relay
  10. 10 - 30 Amp (Green) ABS Power Relay
  11. 11 - Not Used
  12. 12 - Not Used
  13. 13 - 2 Amp (Gray) ABS Control Module
  14. 14 - Not Used
  15. 15 - 10 Amp (Red) Horn and Horn Relay
  16. 16 - 10 Amp (Red) Radio Memory, Clock Memory, Ignition Off Draw
  1. A - Horn Relay
  2. B - Fuel Pump Relay
  3. C - ABS Pump Relay
  4. D - Air Conditioning Relay
  5. E - Auto Shutdown Relay
  6. F - Starter Relay
  7. G - ABS Power Relay