BR–103 BRAKE SYSTEM – ANTI–LOCK BRAKE SYSTEM (ABS) INSPECTION PROCEDURE. 1 Check voltage between terminals THFA, TRCO of ABS & TRAC ECU and body ground. ON THFA TRCO BE6653 R05930 P Remove ABS & TRAC ECU with connectors still connected. C Measure voltage between terminals THFA, TRCO of ABS & TRAC ECU and body ground when ignition switch is turned ON. OK Voltage: TRCO: 7 — 12 V THFA: About 5 V (Pulse) (Reference) 7 – 12 V (MT) 1 V or less 8 ms 24 ms 7 – 12 V (AT) 1 V or less 16 ms 16 ms NG OK ) Check and replace ABS & TRAC ECU. 2 Check voltage between terminals THFA, TRCO of ABS & TRAC ECU and body ground with ABS & TRAC ECU connector is disconnected. ON THFA TRCO BE6653 R07826 P Disconnect ABS & TRAC ECU connector. C Measure voltage between terminals THFA, TRCO of ABS & TRAC ECU connector and body ground when ignition switch is turned ON. OK Voltage: See step 1. NG OK ) Check and replace ABS & TRAC ECU. 3 Check for open and short in harness and connector between ABS & TRAC ECU and TRAC ECU (See page IN–30). OK NG ) Check and replace or connector. Check and replace TRAC ECU.