Inspection Procedure

Check voltage between terminals Tc and E1 of DLC1 or Tc and CG of DLC3.
CHECK
1. Turn the ignition switch ON.
2. Measure voltage between terminals Tc and E1 of the DLC1 or Tc and CG of the DLC3.
  
  Fig 1: Locating DLC1 Terminals E1 & Tc And DLC3 Terminals Tc & CG
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
OK:

Voltage: 10 - 14 V .
1. OK: If ABS warning light does not blink even after Tc and E1 or Tc and CG are connected, the ECU may be defective.
2. NG: Go to next step.
Check for open and short circuit in harness and connector between ABS actuator and DLC1 or DLC3, DLC1 or DLC3 and body ground. See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE .
1. NG: Repair or replace harness or connector.
2. OK: Check and replace skid control ECU.