Etacs Module Input Signal Test

Disconnect the wire connector from the ETACS module.

Inspect the connector on wire harness side as shown in the below.

Fig 1: Identifying ETACS Module Connector Terminals

Courtesy of HYUNDAI MOTOR CO.

ETACS MODULE CONNECTOR REFERENCE

Terminal No.	Connector A	Connector B	Connector C
1	Room lamp	-	Diagnosis
2	B+	-	Drive door lock switch
3	IGN1	Rear wiper switch	Assist door lock switch
4	Alternator (L)	Front deicer relay	Drive door key lock switch
5	Driver door switch	Tail lamp relay	Rear INT switch
6	Assist door key lock switch	Seat belt indicator	Tailgate key unlock switch
7	-	Key illumination lamp	-
8	Windshield deicer switch	B/Horn relay	Drive unlock relay
9	Front fog lamp switch	-	Unlock relay
10	Head lamp switch	-	Speed sensor
11	Washer switch	Safety relay	Rear door lock switch
12	Signal ground	Rear defogger relay	Auto door unlock
13	IGN2	DRL	Assist door key unlock switch
14	Door warning switch	Power window relay	Drive door key unlock switch
15	-	Wiper relay	Hood switch
16	Assist door switch	Rear fog relay	Rear washer switch
17	4 Door switch	Chime bell	Tailgate switch
18	Tail lamp switch	Power GND	Hazard relay
19	Code saving		Start inhibit relay
20	Seat belt switch		Lock relay
21	Rear defogger switch
22	Rear fog lamp switch
23	INT switch
24	INT volume

Etacs Module Input Signal Test

ETACS MODULE REFERENCE

Pin No	Input signal name	Logic state	ON/OFF voltage recognition LEVEL (V)	Remarks
A2	BAT	ON=BAT	9V~16V	BAT=BATTERY
A3	IGN1	ON = BAT (IGN KEY is ON or START position))	7V or more/4V or less
A4	ALT "L"	ON = BAT (starting state)	7V or more/4V or less
A5	Drive door switch	OPEN = GND	1V or less /OPEN	ON:DOOR OPEN
A6	Assist door key lock switch	ON = GND	1V or less /OPEN	ON:LOCK
A8	FR deicer switch	ON = GND	1V or less /OPEN
A9	FR fog switch	ON = GND	1V or less /OPEN
A10	Head lamp switch	ON = GND	1V or less /OPEN
A11	Washer switch	ON = BAT	7V or more/4V or less
A13	IGN2	ON = BAT (IGN KEY is ON position)	7V or more/4V or less
A16	Assist door switch	OPEN = GND	1V or less /OPEN	ON:DOOR OPEN
A17	4door switch	Any one of Dr/Ar/Rr DOOR DOOR OPEN = GND All Dr/Ar/Rr DOORs CLOSE =OPEN	1V or less/OPEN	ON:DOOR OPEN
A18	Tail switch	ON = GND	1V or less /OPEN
A19	Code saving	ON = GND	1V or less/4V or more
A20	Seat belt switch	Fasten = OPEN, Unfasten = GND	1V or less /OPEN	ON: unfasten
A21	RR defog switch	ON = GND	1V or less /OPEN
A22	RR fog switch	ON = GND	1V or less /OPEN
A23	INT switch	ON = BAT	7V or more/4V or less
A24	INT volume	0V ~ 2.5V	-	0Ω ~ 50KΩ
B3	Rear wiper switch	ON = BAT	7V or more/4V or less
C2	Drive door lock switch	LOCK = OPEN, UNLOCK = GND	1V or less /OPEN	ON:UNLOCK
C3	Assist door lock switch	LOCK = OPEN, UNLOCK = GND	1V or less /OPEN	ON:UNLOCK
C4	Drive door key lock switch	ON = GND	1V or less /OPEN	ON:LOCK
C6	Tail gate key unlock switch	ON = GND	1V or less /OPEN	ON:UNLOCK
C10	Speed sensor	Car speed input (PULSE:0~5V)	1V or less/4V or more
C11	RR door lock switch	Any one of TAIL GATE/ Rr (LH)/Rr (RH) DOORUNLOCK = GND ALL TAIL GATE/Rr (LH)/Rr (RH) DOORLOCK = OPEN	1V or less /OPEN	ON:UNLOCK
C13	Assist door key unlock switch	ON = GND	1V or less /OPEN	ON:UNLOCK
C14	Drive door key unlock switch	ON = GND	1V or less /OPEN	ON:UNLOCK
C15	Hood switch	OPEN = GND	1V or less /OPEN
C16	Rear washer switch	ON = BAT	7V or more/4V or less
C17	Tail gate switch	OPEN = GND	1V or less /OPEN