Retrieving Diagnostic Trouble Codes
NOTE:
DO NOT skip any steps in self-diagnostic tests or incorrect diagnosis may result. Ensure self-diagnostic test applies to vehicle being tested.
- Refer to manufacturer's operation manual for instructions in use of scan tool. Before entering on-board diagnostics, see SERVICE PRECAUTIONS under TESTING PROCEDURE. Locate OBD-II Data Link Connector (OBD-II DLC) under instrument panel, near steering column.
- Turn ignition switch to OFF position. Connect scan tool to DLC. See Fig 1. Turn ignition switch to ON position. Read and record scan tool self-diagnostic output. Proceed to DIAGNOSTIC TROUBLE CODE DEFINITIONS . If scan tool will not communicate with PCM, diagnose communication concern. See SCAN TOOL WILL NOT COMMUNICATE under TESTING PROCEDURE. Turn ignition switch to OFF position before disconnecting scan tool.