Inspection Procedure

CHECK DLC3 (TC VOLTAGE)
1. Turn the ignition switch ON.
2. Measure the voltage between terminals 13 (TC) and 4 (CG) of the DLC3.
  OK:
  
  Standard voltage:
  
  10 to 14 V
OK: CHECK ABS AND VSC TRAC WARNING LIGHT

Fig 1: Identifying DLC3 Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: Go to Next step
CHECK WIRE HARNESS (DLC3 - SKID CONTROL ECU)
NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

OK: REPLACE SKID CONTROL ECU ASSEMBLY