Diagnostic Procedure
WARNING: This page is about a different car, the 2003 Toyota Tundra, 2002 Toyota Tundra, and 2001 Toyota Tundra. However, it is still accessible from the selected car via links, so may be relevant.
Turn ignition to ON position. Measure voltage between terminals Tc and CG of DLC3 in engine compartment. See Figure. If voltage is 10-14 volts, circuit is okay. If ABS warning light does not flash even after terminals are connected, malfunction may exist in ABS ECU. If voltage is not 10-14 volts, check for open or short circuit in wiring harness between ABS ECU, DLC3, and body ground to DLC3. See WIRING DIAGRAMS . Repair as necessary. If wiring harness is okay, replace ABS ECU. See ABS ECU/ACTUATOR under REMOVAL & INSTALLATION.