Contents Section: Procedures All sections

Maintenance Information Isuzu Impulse I

Procedures 4 illustrations ~1140 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 2

Scheme 2: 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

Normal Service

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

Severe Service (Unique Driving Conditions)

  1. Short Trips (About 10 Miles) In Freezing Temperatures
  2. Towing Or Heavily Loaded
  3. Severe Dust Conditions
  4. Hot Weather, Stop-And-Go Driving
  5. Extensive Idling Conditions

CAMSHAFT TIMING BELT

CAUTIONFailure to replace a faulty camshaft timing belt may result in serious engine damage.

The condition of camshaft drive belts should always be checked on vehicles which have more than 50,000 miles. Although some manufacturers do not recommend belt replacement at a specified mileage, others require it at 60,000-100,000 miles. A camshaft drive belt failure may cause extensive damage to internal engine components on most engines, although some designs do not allow piston-to-valve contact. These designs are often called "Free Wheeling".

Many manufacturers changed their maintenance and warranty schedules in the mid-1980's to reflect timing belt inspection and/or replacement at 50,000-60,000 miles. Most service interval schedules in this manual reflect these changes.

Belts or components should be inspected and replaced if any of the following conditions exist

  1. Cracks Or Tears In Belt Surface
  2. Missing, Damaged, Cracked Or Rounded Teeth
  3. Oil Contamination
  4. Damaged Or Faulty Tensioners
  5. Incorrect Tension Adjustment

Replace camshaft timing belt at 60,000 mile intervals on 2.0L and 2.3L engines.

WHEEL TIGHTENING

Tighten wheel lug nuts to 80-94 ft. lbs. (108-127 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.

If battery is replaced, new battery should be of the same group number as shown on the original battery's label.

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 COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION section.

REPLACING BLOWN FUSES

CAUTIONBefore 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

CAUTIONContinued operation of vehicle with a severe malfunction could cause converter to overheat, resulting in possible damage to converter and vehicle.
CAUTIONAny modification to the exhaust system on turbo models, which reduces exhaust backpressure, will lead to lean fuel mixtures and excessive spark advance. This could cause serious engine damage.

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.

TIRE CHAINS

P205/60R tires do not allow for sufficient fender clearance when used with tire chains. Only use chains on P195/60R tires.

TURBOCHARGED MODELS

CAUTIONDo not race engine immediately after starting. When stopping engine, allow engine to idle for approximately 60 seconds before shutting it off. Failure to do so may cause turbocharger damage due to lack of oil flowing to the turbocharger bearings.

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.

NEW CAR LIMITED WARRANTY

Covers any repairs and adjustments, using new, or remanufactured parts, to correct defects in materials or workmanship for 36 months or 36,000 miles, whichever occurs first, from first date of use. Factory-installed air conditioners are also covered for 36 months or 36,000 miles.

CORROSION PERFORATION LIMITED WARRANTY

Warrants all body sheet metal panels against rust-through due to corrosion for 36 months, regardless of mileage.

Warrants that the vehicle was designed, built and equipped to conform, at the time of sale to the first owner, with applicable regulations and is free from defects in materials and workmanship which would cause the vehicle to fail to conform to these regulations for 5 years or 50,000 miles. Systems covered by this warranty include

  1. Air/Fuel Metering System
  2. Evaporative Emission Control System
  3. PCV System
  4. Air Injection System
  5. EGR System
  6. Thermostatically Controlled Air Cleaner System
  7. Ignition System
  8. Catalytic Converter System
  9. Early Fuel Evaporation System
  10. Decelerating Device
  11. Turbocharger
  12. Ventilation Valve
  13. Belts, Brackets, Clamps, Connectors, Gaskets, Hoses, Pipes, Seals, etc. Used in Above Systems

EMISSION PERFORMANCE WARRANTY

Covers any repair or adjustments necessary to cause the vehicle to conform with applicable emission regulations for 5 years or 50,000 miles, whichever occurs first. Coverage limited to fewer items after 24 months or 24,000 miles.

FUSE PANEL LOCATION

This vehicle has 3 fuse blocks. The dash fuse box is located under the instrument panel to the left of the steering column. The relay panel is under the hood, and the third is beneath the blower fan case and holds the 25-Amp blower fan fuse.

Scheme 3

Scheme 3: DASH FUSE BOX IDENTIFICATION (1983-87)

Fuse & Circuit Breaker Identification

  1. 1 - 10 Amp Taillights, Stoplights, Cruise Control (1983-84)
  2. 2 - 15 Amp Hazard Warning Light, Door Lock Relay, Anti-Theft
  3. 3 - 10 Amp Dome Lights, Spot Lights, Step Light, Luggage Compartment Light, Key & Light Warning Buzzer, Anti-Theft Controller
  4. 4 - 5 Amp I-TEC System, A/C Mode Control, Radio & Digital Clock
  5. 5 - 15 Amp Rear Defogger
  6. 6 - 10 Amp Air Conditioner, Temp & Blower Controller
  7. 7 - Blank
  8. 8 - 20 Amp Cigarette Lighter & Radio
  9. 9 - 15 Amp Front Wiper & Washer, Anti-Theft Controller
  10. 10 - 15 Amp Rear Wiper & Washer, Auto Mirror, Anti-Theft Controller
  11. 11 - 20 Amp Power Window
  12. 12 - 20 Amp Power Window
  13. 13 - 15 Amp (7.5 Amp in 1987) Back-Up Lights, Turn Signal Lights, O/D Cancel (A/T), Rear Defogger & Cruise Control
  14. 14 - 15 Amp Fuel Tank Sending Unit, Digital Clock & Gauges, Warning & Indicator Lights

Scheme 4

Scheme 4: DASH FUSE BOX IDENTIFICATION (1988-89)
  1. 1 - 15 Amp Stoplight, Stoplight Failure Relay
  2. 2 - 15 Amp Turn Lights, Hazard Lights, Hazard Indicator, Anti-Theft
  3. 3 - 10 Amp Dome Light, Spot Lights, Step Light, Luggage Compartment Lights, Digital Clock
  4. 4 - 7.5 Amp I-TEC Unit & Radio
  5. 5 - 15 Amp Rear Defogger
  6. 6 - 10 Amp Auto Antenna & Digital Meter, Clutch & Start Switch, Starter Relay
  7. 7 - 10 Amp A/C Control Switch, Mode Controller, Temp & Blower Controller, A/C & Blower Relays
  8. 8 - Blank
  9. 9 - 15 Amp Radio & Auto Antenna, Digital Clock
  10. 10 - 20 Amp Cigarette Lighter
  11. 11 - 15 Amp Anti-Theft Controller, Front Wiper Motor & Relay
  12. 12 - 10 Amp Rear Wiper Motor & Relay, Anti-Theft Controller, Door Mirror
  13. 13 - 15 Amp Back-Up Light (M/T), Inhibitor Switch (A/T), Turn Signal, O/D Cancel Switch (A/T), Cruise Control, Rear Defogger Switch
  14. 14 - 15 Amp Fuel Tank Sending Unit, Digital Clock & Gauges, Key & Light Warning Buzzer
  15. 15 - 7.5 Amp Automatic Belts
  16. 16 - Blank
  17. 17 - 20 Amp Power Window Circuit Breaker
  18. 18 - 30 Amp Automatic Belt Circuit Breaker

Scheme 5

Scheme 5: RELAY PANEL IDENTIFICATION (1985-89)

Relay Identification

  1. 1 - 15 Amp Spare
  2. 2 - 15 Amp Headlight Cover (1985-87)
  3. 3 - 15 Amp Taillight, Parking Light, Digital Clock, Side Marker Lights, License Lights, Instrument Illumination, Glove Box Light, Key & Light Warning Buzzer
  4. 4 - 15 Amp Headlight Lower
  5. 5 - 20 Amp Headlight Upper
  6. 6 - 15 Amp Horn Relay, Headlight Cover Relay (1983-84), Anti-Theft Horn Relay (1985-89)
  1. 7 - Ign. Coil (1983-84) Ignition Coil Lighting (1985-89) Lighting
  2. 8 - Lighting (1983-84) Lighting A/C (1985-89) A/C Charge
  3. 9 - Wiper (1983-84) Wiper Motors
  4. Cool Fan (1985-89) Cooling Fan

RELAYS

  1. 10 - Dimmer Relay
  2. 11 - Starter Relay (1983-84) A/C Relay (1985-89)
  3. 12 - Headlight Cover Relay
  4. 13 - Tail Relay
  5. 14 - Lighting Relay