Retrieving Codes

NOTE: Data Link Connector (DLC) was previously referred to as Self-Test connector or VIP connector.

Service codes are retrieved from EEC-IV system through Data Link Connector (DLC). Various methods and test equipment may be used to access these codes:

Analog Volt-Ohmmeter (VOM)
Scan tester
In-Dash Malfunction Indicator Light (MIL)/CHECK ENGINE light