Inspection Procedure

Check voltage between terminals Tc and E ₁ of DLC2 or DLC1 or Tc and CG of DLC3.
CHECK:
1. Turn the ignition switch ON.
2. Measure the voltage between terminals Tc and E₁ of the DLC2 or DLC1, or terminals Tc and CG of the DLC3.
  
  Fig 1: Checking Voltage Between Terminals TC And E1 Of DLC2 Or DLC1 Or TC And CG Of DLC3
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
OK: Voltage: 10 - 14 V
1. OK: If ABS warning light does not blink even after Tc and E ₁ are connected, ECU may be defective.
2. NG: Go to next step.
Check for open and short circuit in harness and connector between ABS & TRAC ECU and DLC2, DLC1 or DLC3, DLC2, DLC1 or DLC3 and body ground .
1. NG: Repair or replace harness or connector.
2. OK: Check and replace ABS & TRAC ECU.