Without Hand-Held Tester

WARNING: This page is about a different car, the 2002 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.

Using special tool (09843-18040), jumper between terminals Tc and CG of (DLC3). See Fig 1.
Turn ignition switch on. Read DTCs from ABS warning light and TRAC OFF indicator light flashing patterns on combination meter. For flashing patterns for normal and codes 11 and 21 see Fig 2. If any DTCs are retrieved, perform appropriate test. See DIAGNOSTIC TROUBLE CODE DEFINITIONS .
If 2 or more malfunctions are indicated at the same time, the lowest numbered DTC will be displayed first.
If a code does not appear, inspect the TRAC OFF indicator light circuit or ABS warning light circuit. See TEST B: ABS WARNING LIGHT CIRCUIT or TEST E: TRAC OFF INDICATOR, TRAC CUT SWITCH CIRCUIT under SYMPTOM TESTING.
Remove special tool and turn off display.

Fig 1: Identifying Tc & CG Terminals

Fig 2: Identifying Flashing Patterns