Without Hand-Held Tester

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Lexus GS 430, 2004 Lexus GS 300, 2003 Lexus GS 430, 2003 Lexus GS 300, and 2002 Lexus GS 430. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect short pin from (DLC1). See Fig 1.
Using special tool (09843-18020), jumper between terminals Tc and E₁ of (DLC1). See Fig 2.
Turn ignition switch to ON. Read DTCs from ABS warning light flashing patterns on combination meter. For flashing patterns of normal and codes 11 and 21, see Fig 3.
If any DTCs are retrieved, perform appropriate test. See DIAGNOSTIC TROUBLE CODE DEFINITIONS .
If 2 or more DTCs are indicated at the same time the lowest numbered DTC will be displayed first.
If no DTCs are stored in memory, inspect the diagnostic circuit or ABS warning light circuit. Perform appropriate test under SYSTEM TESTING .
After completing the check, disconnect jumper wire and install short pin.

Fig 1: Locating Short Pin Of Data Link Connector 1

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 2: Identifying Terminals Of Data Link Connector 1

Fig 3: Identifying Flash Codes