GMC chervolet camaro 1999 Service Manual page 35

0-32 General Information
Strategy Based Diagnosis
Strategy based diagnostics is a uniform approach for
repairing all electrical/electronics systems. The
diagnostic flow may always be used in order to resolve
an E/E system problem. The diagnostic flow is the
place to start when repairs are necessary. Refer to the
following chart for proper strategy based diagnostics.
1
2
3
4
5.1
STORED
DTC(S)
Follow
Published
OTC
Diagnostics
Legend
VERIFY CUSTOMER CONCERN
PRELIMINARY CHECKS
Visual and Operational
Perform Published
DIAGNOSTIC SYSTEM CHECKS
CHECK FOR BULLETINS
(Printed/DCS/Techllne Equipment)
5.2 5.3
SYMPTOM
NO PUBLISHED
NO DTC(S) DIAGNOSTICS
Follow
Analyze
&
Published
Develop
SYMPTOM
Diagnostics
Diagnostics
or call
Technical
Assistance
5.5
OPERATING AS DESIGNED
oCheck Identical Vehicle
o Customer Misunderstanding of System:
Explain Operation to Customer or refer
Customer to Management
o Product Problem:
Call Technical Assistance
7 REPAIR
&
VERIFY FIX
General Information
5.4
INTERMITTENT
See
Diagnostic
Details
6508
(1) Verify the concern: In order to verify the
concern the technician should know
the normal operation of the system.
(2) Preliminary Checks: Conduct a thorough
visual inspection. Review the service history.
Detect unusual sounds or odors. Gather
diagnostic trouble code information in order
to achieve an effective repair.
(3) Perform Published Diagnostic System
Checks: One or more DTCs may not support
a system. System checks verify the proper
operation of the system. This will lead
the technician in an organized approach to
diagnostics.
(4) Check Bulletins and Other Service
Information: Also checks the videos, the
newsletters, and the Pulsat programs.
(
(
(