Buick LeSabre Custom 2000, Руководство пользователя

Страница: 118 / 347

Generator noise may be caused by a loose drive pulley, loose mounting bolts, worn or dirty bearings, defective
diode, or defective stator. It is normal to hear a high frequency whine or magnetic noise at full output. An
output test should be performed to distinguish bearing noise from a magnetic noise. See
CHARGING
SYSTEM FUNCTIONAL TEST .
A shorted bridge diode will reduce output by 1/3 of the rating and will have a growling noise when at high load.
Listening to generator with a moderate load (engine cooling fans or headlights on) can also assist in determining
if a bearing or magnetic noise is present.
ON-VEHICLE TESTING
CHARGING SYSTEM FUNCTIONAL TEST
1. Start engine and observe charge indicator on Instrument Panel Cluster (IPC) or message in Driver
Information Center (DIC). If charge indicator illuminates or DIC displays a charging system message, go
to next step. If charge indicator does not illuminate or DIC does not display a charging system message,
problem is probably intermittent.
2. Turn ignition off. Using CS Electronic Generator Tester (J41450-B), connect Red lead to generator output
terminal and Black lead to metal generator housing. If Green POWER lamp is not on, go to next step. If
Green power lamp is on, go to step 4 .
3. Using a DVOM, measure voltage between output terminal of generator and battery negative terminal. If
battery voltage exists, go to step 10 . If battery voltage does not exist, go to step 9 .
CAUTION: When battery is disconnected, vehicle computer and memory systems
may lose memory data. Driveability problems may exist until computer
systems have completed a relearn cycle. See COMPUTER RELEARN
PROCEDURES article in GENERAL INFORMATION before disconnecting
battery.
NOTE: Before making electrical checks, visually inspect all terminals for clean, tight
connections. Ensure all charging system related fuses are okay. Check
generator mounting bolts and drive belt tension. Ensure battery is in good
condition prior to testing charging system.
NOTE: Connector Test Adapter Kit (J 35616-A) must be used whenever a test
procedure requires checking or probing terminal. Manufacturer recommends
using CS Electronic Generator Tester (J41450-B) to test charging system.
Follow instructions provided with tester. No additional testing available.
NOTE: Green POWER lamp of tester should remain illuminated while tester is
being used.
CAUTION: Make sure load is completely turned off before connecting or
disconnecting carbon pile load tester to battery.
2000 Pontiac Bonneville SE
2000 STARTING & CHARGING SYSTEMS Generators & Regulators - Bonneville & LeSabre
Microsoft
Wednesday, April 21, 2010 9:06:04 AM Page 2 © 2006 Mitchell Repair Information Company, LLC.