BR–142 BRAKE SYSTEM – TRACTION CONTROL SYSTEM (TRAC) DTC 41 IG Power Source Circuit CIRCUIT DESCRIPTION This is the power source for the ECU, hence the CPU and the actuators. DTC No. | Diagnostic Trouble Code Detecting Condition | Trouble area 41 | When either of the following (1) or (2) is detected: (1) Voltage at ECU terminal IG1 is less than 9.5 V for more than 10 sec. while engine speed is 500 RPM or higher. (2) Voltage at ECU terminal IG1 is more than 17 V for more than 5 sec. | Battery IC regulator Open or short in power source circuit ECU WIRING DIAGRAM R/B No.2 R/B No.2 J/B No.1 J/B No.1 TRAC ECU W W W B-Y B-R 26 ALT AM1 1B 1J 1J ECU-IG 1K T9 IG1 7 4 Ignition Switch B W-B 14 Battery T9 GND IG R12468