Hummer H2. Manual — part 22

Fig. 34: Disabling Side Air Bags (960, S90 & V90 Shown; 850, S70 & V70 Are Similar)
Courtesy of VOLVO CARS OF NORTH AMERICA

1997 Lexus SC 300

GENERAL INFORMATION Air Bag Deactivation Procedures

GENERAL INFORMATION

Trouble Shooting - Basic Procedures

ACCESSORIES & ELECTRICAL

CHARGING SYSTEM TROUBLE SHOOTING

BASIC CHARGING SYSTEM TROUBLE SHOOTING CHART

NOTE:

This is GENERAL information. This article is not intended to be specific to any
unique situation or individual vehicle configuration. The purpose of this Trouble
Shooting information is to provide a list of common causes to problem
symptoms. For model-specific Trouble Shooting, refer to SUBJECT,
DIAGNOSTIC, or TESTING articles available in the section(s) you are accessing.

NOTE:

This is GENERAL information. This article is not intended to be specific to any
unique situation or individual vehicle configuration. The purpose of this Trouble
Shooting information is to provide a list of common causes to problem
symptoms. For model-specific Trouble Shooting, refer to SUBJECT,
DIAGNOSTIC, or TESTING articles available in the section(s) you are accessing.

CONDITION & POSSIBLE
CAUSE

CORRECTION

Vehicle Will Not Start

Dead battery

Check battery cells, alternator belt tension and alternator

output

Loose or corroded battery
connections

Check all charging system connections

Ignition circuit or switch
malfunction

Check and replace as necessary

Alternator Light Stays On With Engine Running

Loose or worn alternator
drive belt

Check alternator drive tension and condition, See Belt

Adjustment in TUNE-UP article in the TUNE-UP

section

Loose alternator wiring
connections

Check all charging system connections

Short in alternator light
wiring

See Indicator Warning Lights in STANDARD

INSTRUMENTS in the ACCESSORIES &

EQUIPMENT section

Defective alternator stator or
diodes

See Bench Tests in ALTERNATOR article

Defective regulator

See Regulator Check in ALTERNATOR article

Alternator Light Stays Off With Ignition Switch ON

1998 Chevrolet Pickup C1500

GENERAL INFORMATION Trouble Shooting - Basic Procedures

1998 Chevrolet Pickup C1500

GENERAL INFORMATION Trouble Shooting - Basic Procedures

Blown fuse

See WIRING DIAGRAMS

Defective alternator

See Testing in ALTERNATOR article

Defective indicator light
bulb or socket

See Indicator Warning Lights in STANDARD

INSTRUMENTS in the ACCESSORIES &

EQUIPMENT section

Alternator Light Stays OFF With Ignition Switch ON

Short in alternator wiring

See On-Vehicle Tests in ALTERNATOR article

Defective rectifier bridge

See Bench Tests in ALTERNATOR article

Lights or Fuses Burn Out Frequently

Defective alternator wiring

See On-Vehicle Tests in ALTERNATOR article

Defective regulator

See Regulator Check in ALTERNATOR article

Defective battery

Check and replace as necessary

Ammeter Gauge Shows Discharge

Loose or worn drive belt

Check alternator drive belt tension and condition. See

Belt Adjustment in TUNE-UP article in the TUNE-UP

section

Defective wiring

Check all wires and wire connections

Defective alternator or
regulator

See Bench Tests and On-Vehicle Tests in

ALTERNATOR article

Defective ammeter, or
improper ammeter wiring
connection

See Testing in STANDARD INSTRUMENTS in the

ACCESSORIES & EQUIPMENT section

Noisy Alternator

Loose drive pulley

Tighten drive pulley attaching nut

Loose mounting bolts

Tighten all alternator mounting bolts

Worn or dirty bearings

See Bearing Replacement ALTERNATOR article

Defective diodes or stator

See Bench Test in ALTERNATOR article

Battery Does Stay Charged

Loose or worn drive belt

Check alternator drive belt tension and condition. See

Belt Adjustment in appropriate TUNE-UP article in the

TUNE-UP section

Loose or corroded battery
connections

Check all charging system connections

Loose alternator connections

Check all charging system connections

Defective alternator or
battery

See On-Vehicle Tests and Bench Tests in

ALTERNATOR article

Add-on electrical
accessories exceeding
alternator capacity

Install larger alternator

Battery Overcharged-Uses Too Much Water

Defective battery

Check alternator output and repair as necessary

1998 Chevrolet Pickup C1500

GENERAL INFORMATION Trouble Shooting - Basic Procedures

IGNITION SYSTEM TROUBLE SHOOTING

Fig. 1: Ignition Secondary Trouble Shooting Chart

Defective alternator

See On-Vehicle Test and Bench Tests in

ALTERNATOR article

Excessive alternator voltage

Check alternator output and repair as necessary

NOTE:

This is GENERAL information. This article is not intended to be specific to any
unique situation or individual vehicle configuration. The purpose of this Trouble
Shooting information is to provide a list of common causes to problem
symptoms. For model-specific Trouble Shooting, refer to SUBJECT,
DIAGNOSTIC, or TESTING articles available in the section(s) you are accessing.

1998 Chevrolet Pickup C1500

GENERAL INFORMATION Trouble Shooting - Basic Procedures