FUSES & CIRCUIT BREAKERS (FWD) Fuses & Circuit Breakers 1989-91 Buick

Buick LeSabre 1991 - FUSES & CIRCUIT BREAKERS

In the event of an electrical overload, the windshield wipers will remain stopped until the motor cools off. The headlight will blink on/off or remains off in some cases as both are protected by circuit breakers. In such cases, have the systems inspected immediately to correct the cause of overloading.

NOTE:

- fuse usage chart inside fuse panel door for specific fuse locations on years and models not shown in FUSE PANEL IDENTIFICATION illustrations.

Buick LeSabre 1991 - FUSE PANEL IDENTIFICATION (1989-91)

Fig. 1: Buick LeSabre 1991 - Component Locations - Fuse Panel Identification (1989-91)

WARNING:

Always disconnect battery ground cable before servicing "high-current" fuses. It is recommended that "high-current" fuses be replaced by a qualified technician.

Fuse & Circuit Breaker Identification

• 1 - Blank or Spare
• 2 - Blank or Spare
• 3 - 10 Amp Digital Cluster
• 4 - 10 Amp Radio
• 5 - 25 Amp Windshield Wiper
• 6 - 5 Amp Cooling Fan Relays
• 7 - 25 Amp Air Conditioning
• 8 - 5 Amp Electric Brake System (Pump)
• 9 - 5 Amp Electric Brake System (Control)
• 10 - 10 Amp Cluster, Low Coolant Compass
• 11 - 20 Amp Chime, Cigarette Lighter, Radio, Power Antenna
• 12 - 20 Amp Auto Level Control
• 13 - 20 Amp Stoplights
• 14 - 20 Amp License Plate Light
• 15 - 20 Amp Courtesy Lights, Power Mirrors, Cigarette Lighter
• 16 - 20 Amp Gauges, Door Locks, Illuminated Entry System
• 17 - 10 Amp Electronic Control Module (ECM)
• 18 - 5 Amp Cruise Control
• 19 - 15 Amp Turn Signals, Back-Up Lights
• 20 - 20 Amp Electric Trunk & Fuel Door Release
• 21 - Blank or Spare
• 22 - Blank or Spare
• 23 - 30 Amp (Circuit Breaker) Power Windows & Sun Roof
• 24 - 30 Amp (Circuit Breaker) Power Seats & Door Locks, Rear Window Defogger
• 25 - 5 Amp Instrument Panel Lights

Buick LeSabre 1991 - CAUTIONS & WARNINGS SUPPLEMENTAL RESTRAINT SYSTEM (AIR BAG)

NOTE:

See the AIR BAGS article in the ACCESSORIES/SAFETY EQUIPMENT Section.

Modifications or improper maintenance, including incorrect removal and installation of the Supplemental Restraint System (SRS), can adversely affect system performance. DO NOT cover, obstruct or change the steering wheel horn pad in any way, as such action could cause improper function of the system. Use only plain water when cleaning the horn pad. Solvents or cleaners could adversely affect the air bag cover and cause improper deployment of the system.

WARNING:

To avoid injury from accidental air bag deployment, read and carefully follow all warnings and service precautions. See appropriate AIR BAGS article in ACCESSORIES/SAFETY EQUIPMENT.

Modification to the air bag system component or wiring can adversely affect system performance and possibly cause injury.

CAUTION:

The Diagnostic Energy Reserve Module (DERM) can maintain enough voltage to cause a deployment of the inflator module for up to 10 minutes after the ignition switch is turned off and the battery is disconnected. Many of the service procedures require disconnection of the inflator module to avoid an accidental deployment.

CAUTION:

Disconnect 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

Buick LeSabre 1991 - ANTI-LOCK BRAKE SYSTEM

The anti-lock brake system contains electronic equipment that can be susceptible to interference caused by improperly installed or high output radio transmitting equipment. Since this interference could cause the possible loss of the anti-lock braking capability, such equipment should be installed by qualified professionals.

On models equipped with anti-lock brake systems, ALWAYS observe the following cautions:

• DO NOT attempt to bleed hydraulic system without first referring to the appropriate ANTI-LOCK BRAKE SYSTEM article in the BRAKES Section.
• DO NOT mix tire sizes. As long as tires remain close to the original diameter, increasing the width is acceptable. Rolling diameter must be identical for all 4 tires. Some manufacturers recommend tires of the same brand, style and type. Failure to follow this precaution may cause inaccurate wheel speed readings.
• Use ONLY recommended brake fluids. DO NOT use silicone brake fluids in an ABS-equipped vehicle.

Buick LeSabre 1991 - 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.

Buick LeSabre 1991 - BATTERY WARNING

WARNING:

When 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 the COMPUTER RELEARN PROCEDURES article in the GENERAL INFORMATION section.

Buick LeSabre 1991 - BRAKE PAD WEAR INDICATOR

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

Buick LeSabre 1991 - CATALYTIC CONVERTER (GASOLINE MODELS)

To prevent catalytic converter overheating, DO NOT allow engine to idle for more than 20 minutes.

Buick LeSabre 1991 - ELECTROSTATIC DISCHARGE SENSITIVE (ESD) PARTS

WARNING:

Many 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.

Buick LeSabre 1991 - FUEL SYSTEM SERVICE

WARNING:

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

Buick LeSabre 1991 - HALOGEN BULBS

Halogen 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.

Buick LeSabre 1991 - RADIATOR CAP

CAUTION:

Always 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.

Buick LeSabre 1991 - RADIATOR FAN

Keep 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.