BR–146 BRAKE SYSTEM – TRACTION CONTROL SYSTEM (TRAC) 2 Check voltage between terminal BRFA of TRAC ECU and body ground. ON BRFA P 1. Remove TRAC ECU with connectors still connected. 2. Turn ignition switch ON. C Measure voltage between terminal BRFA of TRAC ECU and body ground. OK Voltage: About 6 V (Pulse) (Reference) 6 – 14 V 1 V or less 24 ms 24 ms BE6853 RD6989 NG OK Check and replace TRAC ECU. 3 Check voltage between terminal BRFA of TRAC ECU and body ground with TRAC ECU connector disconnected. ON BRFA P Disconnect TRAC ECU connector. C Measure voltage between terminal BRFA of TRAC ECU connector and body ground. HINT: Measure voltage within 8 seconds from the time TRAC ECU connector is disconnected. OK Voltage: See step 1. BE6653 RD7627 NG OK Check and replace TRAC ECU. 4 Check for open and short in harness and connector between ABS & TRAC ECU and TRAC ECU (See page IN–30). OK NG Repair or replace harness or connector. Check and replace ABS & TRAC ECU.