SELF-DIAGNOSTIC SYSTEM
DIAGNOSTIC SYSTEM CHECK
1. Ensure battery condition, cold cranking amperage and reserve capacity meet specifications. Replace as
necessary. Install scan tool. If scan tool powers up, go to next step. If scan tool does not power up, see
SCAN TOOL DOES NOT POWER UP in BODY CONTROL MODULES - BONNEVILLE &
LESABRE article in ACCESSORIES & EQUIPMENT.
2. Turn ignition on, engine off. Try to establish scan tool communication with each module on Class 2 serial
data circuit. If communication with each module is established, go to next step. If communication with
each module is not established, see SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2
DEVICE in BODY CONTROL MODULES - BONNEVILLE & LESABRE article in ACCESSORIES &
EQUIPMENT.
3. Select display DTC function for each module. Record all displayed DTCs, status of displayed DTCs and
module that set the DTC. If DTCs are displayed, go to next step. If no DTCs are displayed, see ON-
VEHICLE TESTING .
4. Retrieve codes and perform appropriate test. See DIAGNOSTIC TROUBLE CODE INDEX table.
DIAGNOSTIC TROUBLE CODE INDEX
NOTE: Diagnostic trouble code tests are written specifically for use with GM Tech I or
Tech II scan tools. Generic scan tool can be used but may have limited
functions. This article only covers the portion of those systems which relates to
charging system diagnosis. For further information, see appropriate SELF-
DIAGNOSTICS article in ENGINE PERFORMANCE.
DTC
(1)
(2)
Description
B1000, B1004, B1007 or
B1009
(3)
B1327
(3)
B1513 Charging System Volts Low
B1514 Charging System Volts High
(1)
For any DTC beginning with the letter "U", see SCAN
TOOL DOES NOT COMMUNICATE WITH CLASS 2
DEVICE in BODY CONTROL MODULES -
BONNEVILLE & LESABRE article in ACCESSORIES
& EQUIPMENT.
(2)
For any DTC beginning with the letter "P", see
appropriate SELF-DIAGNOSTICS article in ENGINE
PERFORMANCE.
(3)
See DIAGNOSTIC TESTS in BODY CONTROL
MODULES - BONNEVILLE & LESABRE article in
ACCESSORIES & EQUIPMENT.
2000 Pontiac Bonneville SE
2000 STARTING & CHARGING SYSTEMS Generators & Regulators - Bonneville & LeSabre
Microsoft
Wednesday, April 21, 2010 9:06:04 AM Page 4 © 2006 Mitchell Repair Information Company, LLC.
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