8_206int.fm Page 25 Thursday, July 2, 1998 1:07 PM
DIAGNOSTIC TOOLS & PROCEDURES TROUBLESHOOTING PROCEDURES Determining That a Fault Exists Before beginning any troubleshooting procedure, be certain that a problem actually exists. If possible, talk to the driver or the person who noticed the problem, and try to obtain as much information as possible. In some cases, the only evidence of a fault is a verbal complaint. After determining that an active fault does exist, follow the troubleshooting sequence listed in this manual. The procedures are organized according to the diagnostic code.
Locating Diagnostic Blink Code Information Once the diagnostic code has been displayed, there are several places to find information explaining what the diagnostic code actually means. r
Table of Contents (front of the book)
r
Index (back of the book)
Performing Diagnostic Tests Once a fault has been logged, whether active or inactive, the tests for that particular fault must be completed, step by step, in the order in which they are listed. This allows you to logically move toward a solution to the problem. r
Follow the tests exactly as they are outlined.
r
Start at the beginning of each sequence, and perform each test in the order in which it is outlined.
r
Do not skip steps or attempt to shortcut the test procedure.
r
The results of each test will identify possible causes of the problem, or will determine which test to perform next.
Not all tests are performed in sequence. For example, the results of a particular test may specify performing Test 9 after Test 4, skipping Tests 5–8.
These sources list the pages that contain information on a particular diagnostic code.
Page 25
