DTC U0073: Control Module Communication Bus Off; DTC U0100: Lost Communication With ECM/PCM "A"; DTC U0110: Lost Communication with Drive Motor Control Module "A"; DTC U0120: Lost Communication With Starter / Generator Control Module; DTC U0124: Lost Communication With Lateral Acceleration Sensor Module; DTC U0126: Lost Communication With Steering Angle Sensor Module; DTC U0140: Lost Communication with Body Control Module; DTC U0293: Lost Communication with Hybrid Vehicle Control System [12/2018 - ]: Description

The airbag ECU assembly has a built-in yaw rate and acceleration sensor and detects the vehicle condition using 2 circuits (GL1, GL2).

The skid control ECU (brake booster with master cylinder assembly) receives signals from the hybrid vehicle control ECU, steering angle sensor, certification ECU (smart key ECU assembly), inverter with converter assembly, yaw rate and acceleration sensor (airbag ECU assembly), ECM and main body ECU (multiplex network body ECU) via CAN communication.

DTC No.	Detection Item	INF Code	DTC Detection Condition	Trouble Area	MIL	Note
U0073	Control Module Communication Bus Off	461 462 463	INF Code: 461 Either of the following is detected: Yaw rate and acceleration sensor communication is disabled for 1 second or more. Yaw rate and acceleration sensor communication is disabled once or more per 5 seconds 10 times or more within 60 seconds. INF Code: 462 Either of the following is detected: Steering angle sensor communication is disabled for 1 second or more. Steering angle sensor communication is disabled once or more per 5 seconds 10 times or more within 60 seconds. INF Code: 463 Bus off occurs once or more per 0.1 seconds 10 times repeatedly.	INF Code: 461 CAN communication line Yaw rate and acceleration sensor (airbag ECU assembly) Skid control ECU (brake booster with master cylinder assembly) INF Code: 462 CAN communication line Steering angle sensor Skid control ECU (brake booster with master cylinder assembly) INF Code: 463 CAN communication line Skid control ECU (brake booster with master cylinder assembly)	Comes on	INF Code 461: SAE Code U0074 INF Code 462: SAE Code U0074 INF Code 463: SAE Code U0073 and U0074 Electronically controlled brake system DTC
U0100	Lost Communication With ECM/PCM "A"	-	Either of the following is detected: ECM communication is disabled for 2 second or more. ECM communication is disabled once or more per 5 seconds 10 times or more within 60 seconds.	CAN communication line ECM Skid control ECU (brake booster with master cylinder assembly)	Comes on	-
U0110	Lost Communication with Drive Motor Control Module "A"	1153 1154	INF Code: 1153 When terminal IG2 voltage is 9.5 V or more, data from the inverter with converter assembly cannot be received for 2 seconds or more. INF Code: 1154 When terminal IG2 voltage is 9.5 V or more, the condition in which data from the inverter with converter assembly cannot be received once or more within 5 seconds occurs 10 times in succession.	CAN communication line Inverter with converter assembly Skid control ECU (brake booster with master cylinder assembly)	Comes on	INF Code 1153: SAE Code U0110 (Case 1) INF Code 1154: SAE Code U0110 (Case 2) Electronically controlled brake system DTC
U0120	Lost Communication With Starter / Generator Control Module	1158	Push start switch data is invalid for 3 seconds or more.	CAN communication line Certification ECU (smart key ECU assembly) Skid control ECU (brake booster with master cylinder assembly)	Comes on	INF Code 1158: SAE Code U1107 Electronically controlled brake system DTC
U0124	Lost Communication With Lateral Acceleration Sensor Module	591 592	INF Code: 591 Acceleration sensor communication is disabled for 1 second or more. INF Code: 592 Acceleration sensor communication is disabled once or more per 5 seconds 10 times or more within 60 seconds.	CAN communication line Acceleration sensor (airbag ECU assembly) Skid control ECU (brake booster with master cylinder assembly)	Comes on	INF Code 591: SAE Code U0125 (Case 1) INF Code 592: SAE Code U0125 (Case 2) ABS DTC
U0126	Lost Communication With Steering Angle Sensor Module	741 742	INF Code: 741 Steering angle sensor communication is disabled for 1 second or more. INF Code: 742 Steering angle sensor communication is disabled once or more per 5 seconds 10 times or more within 60 seconds.	CAN communication line Steering angle sensor Skid control ECU (brake booster with master cylinder assembly)	Does not come on	VSC DTC
U0140	Lost Communication with Body Control Module	-	Main body ECU (multiplex network body ECU) communication is disabled for 2 second or more.	CAN communication line Main body ECU (multiplex network body ECU) Skid control ECU (brake booster with master cylinder assembly)	Comes on	-
U0293	Lost Communication with Hybrid Vehicle Control System	411 412 413	INF Code: 411, 413 When terminal IG2 voltage is 9.5 V or more, data from the hybrid vehicle control ECU cannot be received for 2 seconds or more. INF Code: 412 When terminal IG2 voltage is 9.5 V or more, the condition in which data from the hybrid vehicle control ECU cannot be received once or more within 5 seconds occurs 10 times in succession.	CAN communication line Hybrid vehicle control ECU Skid control ECU (brake booster with master cylinder assembly)	Comes on	INF Code 411, 413: SAE Code U0293 (Case 1) INF Code 412: SAE Code U0293 (Case 2) Electronically controlled brake system DTC