Belt Starter Generator Control Module (BSGCM) --, 2024 MY

WARNING: This page is about a different car, the 2024 Audi S4. However, it is still accessible from the selected car via links, so may be relevant.

Component / System	DTC / DTC Description	Monitor Strategy Description	Malfunction Criteria	Threshold Value		Secondary Parameters	Enable Condition		Monitoring Time Length / Frequency of Monitor
Electric Drive Motor, Stator Temperature Sensor	P0A1A - Generator Control Module	out of range low	measured temperature measured temperature difference between inverter coolant inlet temperature and measured temperature	< -45 OR < -33.5 > 40	[°C] [°C] [K]				300 [ms] continuously
		out of range high	measured temperature	> 215	[°C]				300 [ms] continuously
		cross check	input temperature difference between measurements (stator, inverter coolant outlet)	>150 OR < -80	[°C] [°C]				300 [s] once / DC
		over temperature	stator temperature	> 170	[°C]				6 [s] continuously
Electric Drive Motor, Inverter PCB		out of range high	measured temperature	>133.5	[°C]				1.5 s] continuously
Temperature Sensor		out of range low	measured temperature	< -46.3	[°C]				1.5 [s] continuously
		cross check	input temperature difference between	> 30	[°C]				300 [s] once / DC
			measurements (inverter PCB temperature -	OR < -30	[°C]
			inverter coolant outlet temperature)
		over temperature	measured temperature	> 117, 6	[°C]				1.5 [s] continuously
Electric Drive Motor, Inverter Coolant Inlet		out of range high	measured temperature	>133.5	[°C]				1.5 [s] continuously
Temperature		out of range low	measured temperature	< -46.3	[°C]				1.5 [s] continuously
		cross check	input temperature difference between	> 20	[°C]				300 [s] once / DC
			measurements (inverter coolant inlet	OR < -20	[°C]
			temperature - inverter coolant outlet
			temperature)
		over temperature	measured temperature	> 117, 6	[°C]				2 [s] continuously
Electric Drive Motor, Inverter Coolant Outlet Temperature		out of range high	measured temperature	>133.5	[°C]				300 [ms] continuously
		out of range low	measured temperature	< -46.3	[°C]				300 [ms] continuously
		over temperature	measured temperature	> 117, 6	[°C]				2 [s] continuously
Electric Drive Motor, Inductive Rotor		shortcut to ground	measured sinus signal voltage	< -2.14	[V]				60 [ms] continuously
Position Sensor		shortcut to battery	measured sinus signal voltage	> 2.14	[V]				60 [ms] continuously
		shortcut to ground	measured cosinus signal voltage	< -2.14	[V]				60 [ms] continuously
		shortcut to battery	measured cosinus signal voltage	> 2.14	[V]				60 [ms] continuously
		offset check	measured sinus signal voltage offset	> 0.38	[V]				90 [ms] continuously
				OR < -0.38	[V]
		offset check	measured cosinus signal voltage offset	> 0.38	[V]				90 [ms] continuously
				OR < -0.38	[V]
		rationality check	calculated amplitude ratio between sinus and	> 22	[%]				120 [ms] continuously
			cosinus
		rationality check	calculated root of sum from sinus square and	< 0.38	[V]				120 [ms] continuously
			cosinus square value	OR > 2.14	[V]
		out of range high	measured drive motor speed	> 19756	rpm				100 [ms] continuously
Electric Drive Motor, Phase Current Sensor 1		out of range high	measured phase 1 voltage	> 4.75	[V]				10 [ms] continuously
		out of range high	\| measured phase current 1 \|	> 750	[A]	Inverter	= on	[-]	10 [ms] continuously
		out of range low	measured phase 1 voltage	< 0.25	[V]	Start request	= not active	[-]	10 [ms] continuously
Electric Drive Motor, Phase Current Sensor 3		out of range low	measured phase 3 voltage	< 0.25	[V]	Start request	= not active	[-]	10 [ms] continuously
		out of range high	measured phase 3 voltage	> 4.75	[V]				10 [ms] continuously
		out of range high	\| measured phase current 3 \|	> 750	[A]	Inverter	= on	[-]	10 [ms] continuously
Inverter Powerstage Transistor		electrical check	MOSFET phase 1/2/3 high side/low side short circuit	= detected	[-]	HV Battery voltage	> 23.166 < 58.058	[V] [V]	10 [ms] once / DC
			OR			Rotor speed	< 5150	[rpm]
			MOSFET phase 1/2/3 high side/low side open	= detected	[-]
			OR
			MOSFET phase 1/2/3 inductivity low
				= detected	= detected[-]
			OR
			Motor short circuit
				= detected	[-]
HV Input		out of range low	measured DC link voltage	< 23.166	[V]	Inverter	= on	[-]	2 [s] continuously
		out of range high	measured DC link voltage	> 58.058	[V]				600 [ms] continuously
				AND < 61.5	[V]
		out of range high	DC link voltage by HW	= over voltage	[-]	Start request	= not active	[-]	600 [ms] continuously
		rationality check	difference between Terminal 40 and DC link	>10	[V]				180 [ms] continuously
			voltage	OR < -10	[V]
5V sensor supply		range check	measured supply voltage	>5.5 OR <4.5	[V] [V]				50 [ms] continuously
Internal Errors		internal ECU check	internal power supply 5.0 V of system basis	< 4.61	[V]	none			10 [ms] continuously
			chip measured voltage	> 5.41	[V]
		out of range high	15 V power supply measured voltage	> 16.662	[V]	Start request	= not active	[-]	90 [ms] continuously
		out of range low	15 V power supply measured voltage	< 13.441	[V]	Start request	= not active	[-]	90 [ms] continuously
		internal ECU check	level 2 safety monitoring	failure detected		none			10 [ms] continuously
		internal ECU check	level 3 safety monitoring	failure detected		none			10 [ms] continuously
	U0100 - Lost Communication With ECM/PCM "A"	internal ECU check	torque request	> 60	[Nm]				100 [ms] continuously
	U0100 - Lost Communication With ECM/PCM "A"			OR < -60	[Nm]
System Power Supply	P0A1A - Generator Control Module	out of range high	system power supply voltage	> 18.876	[V]				60 [s] continuously
				AND < 26.198	[V]
		out of range high	system power supply voltage	> 26.198	[V]				500 [ms] continuously
		out of range low	system power supply voltage	< 8.551	[V]	Inverter	= on	[-]	1 [s] continuously
						Start request	= not active	[-]
		out of range low	system power supply voltage by HW	<6	[V]	Start request	= not active	[-]	50 [ms] continuously
CAN Communication	U0100 - Lost Communication With ECM/PCM "A"	Global time out check or Bus off check	CAN global	time out		Battery voltage	= 9.. 16	[V]	320 [ms] continuously
						Time after ignition on	> 500	[ms]
		Time out check		No update for		Battery voltage	= 9.. 16	[V]	210-500 [ms] continuously
			MSG_EMG_01 CAN message OR	> 10 ms		Time after ignition on	> 500	[ms]
			MSG_EMG_02 CAN message OR	> 10 ms
			MSG_EMG_03 CAN message	> 10 ms
	U0452 - Invalid Data Received From Restraints Control Module	CRC failure	Airbag_01 CAN message	checksum or alive counter failure		Battery voltage	= 9.. 16	[V]	200-210 [ms] continuously
						Time after ignition on	> 500	[ms]
	U0100 - Lost Communication With ECM/PCM "A"	CRC failure	MSG_EMG_01 CAN message OR	checksum or alive counter failure		Battery voltage	= 9.. 16	[V]	200-210 [ms] continuously
			MSG_EMG_02 CAN message			Time after ignition on	> 500	[ms]
		Error value	MSG_EMG_01 CAN message OR	information content error value		Battery voltage	= 9.. 16	[V]	500 [ms] continuously
			MSG_EMG_02 CAN message OR			Time after ignition on	> 500	[ms]
			Motor_12 CAN message
	U0447 - Invalid Data Received From Serial Data Gateway Module "A"	Error value	MVEM_01 CAN message OR	information content error value		Battery voltage	= 9.. 16	[V]	1500 [ms] continuously
			MVEM_02 CAN message OR			Time after ignition on	> 500	[ms]
			Diagnose_01 CAN message
	U0412 - Invalid Data Received From Battery Energy Control Module "A"	Error value	BMS_MV_01 CAN message	information content error value		Battery voltage	= 9.. 16	[V]	500 [ms] continuously
						Time after ignition on	> 500	[ms]
	U0416 - Invalid Data Received From Vehicle Dynamics Control Module	Error value	ESP_21 CAN message	information content error value		Battery voltage	= 9.. 16	[V]	500 [ms] continuously
						Time after ignition on	> 500	[ms]
Ground offset	P0A1A - Generator Control Module	offset check	ground offset out of range by HW	= detected	[-]				10 [ms] continuously
Coolant Water Pump	P0B38 - Motor Electronics Coolant Pump "B" Control Circuit/Open	shortcut to battery	communication signal always high	= detected	[-]	Ignition	= on	[-]	10 [s] continuously
		shortcut to ground	communication signal always low	= detected	[-]	Ignition	= on	[-]	10 [s] continuously
		communication check	no alive signal	= detected	[-]	Ignition	= on	[-]	30 [s] continuously
	P0C74 - Motor Electronics Coolant Pump "B" Control Performance	functionality check	dry running	= detected	[-]	Ignition	= on	[-]	30 [s] continuously
		functionality check	blocked	= detected	[-]	Ignition	= on	[-]	30 [s] continuously
		functionality check	over temperature	= detected	[-]	Ignition	= on	[-]	30 [s] continuously
		functionality check	low speed	= detected	[-]	Ignition	= on	[-]	30 [s] continuously