LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Hyundai >> 2012 >> Tucson GL, Automatic Trans >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Body Control Module (BCM) >> Body Control Module (BCM) >> Repair Procedures >> Inspection >> Input Signal Specification
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Input Signal Specification

No Input Signal Name Logic State On/off Voltage Recognition Level (V) Remarks
1 A_B+ (Signal) ON = BAT 9 V~16 V -
2 A_B+ (Power1) ON = BAT 9 V~16 V -
3 A_B+ (Power2) ON = BAT 9 V~16 V -
4 L_IGN1 ON = BAT (IGN KEY is ON or START position) 8 V or more/4 V or less -
5 L_INH'R' SW ON = BAT 8 V or more/4 V or less -
6 L_IGN2 ON = BAT (IGN KEY is ON position) 8 V or more/4 V or less -
7 L_FRT INT WIPER SW ON = BAT 8 V or more/4 V or less -
8 L_FRT WASHER SW ON = BAT 8 V or more/4 V or less -
9 L_MIST SW ON = BAT 8 V or more/4 V or less -
10 L_RR WIPER_INT SW ON = BAT 8 V or more/4 V or less -
11 L_RR WIPER_ON SW ON = BAT 8 V or more/4 V or less -
12 L_RR WASHER SW ON = BAT 8 V or more/4 V or less -
13 A_ALT'L' ON = BAT (Starting State) 8 V or more/4 V or less -
14 L_ACC ON = BAT 8 V or more/4 V or less -
15 L_TurnSignal Left SW ON = BAT 8 V or more / 4 V or less -
16 L_TurnSignal Right SW ON = BAT 8 V or more/4 V or less -
17 L_Key Inter Lock SW ON = GND 2 V or less/OPEN (Reference: 7.7 V or more) -
18 L_KEY IN SW ON = GND 2 V or less/OPEN (Reference: 7.7 V or more) -
19 L_Tail Lamp SW ON = GND 2 V or less/OPEN (Reference: 7.7 V or more) -
20 L_EC Headlamp Type ON = GND 2 V or less/OPEN (Reference: 7.7 V or more) -
21 L_Hazard SW ON = GND 2 V or less/OPEN (Reference: 7.7 V or more) -
22 L_Front Fog Lamp SW OPEN = GND 2 V or less/OPEN (Reference: 7.7 V or more) -
23 L_HeadLamp LOW SW OPEN = GND 2 V or less/OPEN (Reference: 7.7 V or more) -
24 L_HeadLamp HIGH SW OPEN = GND 2 V or less/OPEN (Reference: 7.7 V or more) -
25 L_Rear Fog Lamp SW OPEN = GND 2 V or less/OPEN (Reference: 7.7 V or more) -
26 L_RL Seat Warmer SW OPEN = GND 2 V or less/OPEN (Reference: 7.7 V or more) -
27 L_RR Seat Warmer SW OPEN = GND 2 V or less/OPEN (Reference: 7.7 V or more) -
28 L_FRONT DEICER SW ON = GND 2 V or less/OPEN (Reference: 7.7 V or more) -
29 L_REAR DEFOGGER SW ON = GND 2 V or less/OPEN (Reference: 7.7 V or more) -
30 L_RPAS OFF SW ON = GND 2 V or less/OPEN (Reference: 7.7 V or more) -
31 L_Auto Light SW ON = GND 2 V or less/OPEN (Reference: 7.7 V or more) -
32 A_Auto Light Signal - - A/D
33 A_Wiper Int Volume - - A/D
34 L_CRASH UNLOCK INPUT (PWM) - - PWM
35 LIN_RPAS - - Communication
36 CAN_HIGH - - Communication
37 CAN_LOW - - Communication
38 DIAGNOSIS (K-Line) - - Communication