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: Connecting Terminals 13 (TC) And 4 (CG) Of DLC3
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