BR–143 BRAKE SYSTEM – TRACTION CONTROL SYSTEM (TRAC) INSPECTION PROCEDURE 1 Check battery positive voltage. OK Voltage: 10 – 14 V OK NG Check and repair the charging system. 2 Check voltage between terminals IG1 and GND of TRAC ECU connector. ON P 1. Remove TRAC ECU with connectors still connected. 2. Turn ignition switch ON. C Measure voltage between terminals IG1 and GND of TRAC ECU connector. OK Voltage: 10 – 14 V IG1 GND BE8653 R06987 NG OK Check and replace TRAC ECU. 3 Check continuity between terminal GND of TRAC ECU connector and body ground. LOCK C Measure resistance between terminal GND of TRAC ECU connector and body ground. OK Resistance: 1 or less GND BE8653 R06988 OK NG Repair or replace harness or connector.