General Testing Description

DEFINITION
Quick Test is a check of system electronics which uses the control module of each system to perform diagnostics on itself and its circuitry. This module capability is referred to as Diagnostic Test Mode. Since little effort is required to initiate Diagnostic Test Mode, but vital information is quickly retrieved in return, the procedure is called Quick Test.

CAUTION:
- Quick Test is a fast and powerful diagnostic aid, but it cannot detect all possible failures that can occur in EEC systems. The Quick Test procedure has been carefully constructed to guide and refer you to Pinpoint Tests that inspect components and circuitry associated with particular symptoms.

- Remember, everything that went wrong with cars before electronics can still go wrong, and still cause the majority of driveability problems. The best diagnosis starts with a list of symptoms and possible causes, followed by a careful checking of those causes in the most probable order.

DIRECTIONS
When directed to Quick Test, perform all of Quick Test step by step, following directions in the "Action To Take" column. If all phases of Quick Test give no indication of a problem, it is likely the problem is non-electronic and will be found elsewhere. When directed to a Pinpoint Test, always read the notes and carefully examine the test schematic. When a repair has been made, erase codes and rerun Quick Test to confirm the repair was effective.