Lexus Scan Tester
LS400 is equipped with 2 Data Link Connectors (DLCs). Data Link Connector No. 1 (DLC1) is located in engine compartment. Data Link Connector No. 2 (DLC2) is located under left side of instrument panel. See Fig 1. Codes can be retrieved by using DLC1 or DLC2. Connect scan tester to DLC1 or DLC2. Using scan tester manufacturer's instructions, retrieve trouble codes.