Diagnostic Procedure: Procedure

NOTE: Before proceeding with diagnosis, certain precautions must be followed. See PRETEST INSPECTION under SELF-DIAGNOSTIC SYSTEM.

Diagnostic test procedures are designed to detect system faults as quickly as possible. Body fault codes are accessed through CCD bus diagnostic connector. See Figure . DRB-II tester is used to access information from CCD bus diagnostic connector. DRB-II tester, jumper wires and volt-ohmmeter will be needed for testing. Proceed to TEST 1A: IDENTIFYING VEHICLE EQUIPMENT & SYSTEM PROBLEMS. Ensure self-diagnostic tests apply to vehicle being tested. See BODY CONTROL COMPUTER TESTS DIRECTORY table under SELF-DIAGNOSTIC SYSTEM. When system problem is identified according to customer's complaint, perform indicated diagnostic test.