Hyundai Elantra: Schematic Diagrams - ABS(Anti-Lock Brake System) - Brake System - Hyundai Elantra HD 2006Ц2010 Service ManualHyundai Elantra: Schematic Diagrams

ABS Circuit Diagram(1)

ABS Circuit Diagram(2)

ABS Circuit Diagram(2)


ECU Connector Input/Output(ABS)

Wire No.
Designation
Current
max.permissible wire resistance R_L (mΩ)
min.leakage resistance R_P
(kΩ)
max
min
1
Ground for recirculation pump
20~39 A
10 A
10

4
Ground for solenoid valves and ECU
5~15 A
2.5 A
10

2
Voltage supply for pump motor
20~39 A
10 A
10
200
3
Voltage supply for solenoid valves
5~15 A
2 A
10
200
18
Voltage for hybrid ECU
1 A
500 mA
60
200
5,10,17,19
signal wheel speed sensor FL, FR, RL,RR
16 mA
6 mA
250
200 to ground 1.5M to bat
16,9,6,8
Voltage supply for the active wheel speed sensor FL,FR, RL, RR
10 mA
6 mA
250
200 to ground 1.5M to bat
11
Diagnostic wire K
6 mA
3 mA
250
200
22
ABS-warning lamp actuation
30 mA
5 mA
250
200
12
EBD-warning lamp actuation
30 mA
5 mA
250
200
20
brake light switch
10 mA
5 mA
250
200
15
CAN Low
30 mA
20 mA
250
200
26
CAN High
30 mA
20 mA
250
200

ABS HECU Connector
Connector terminal
Specification
Condition
Number
Description
1
Ground for recirculation pump
Current range: Min.10A
Max.20~39A
Always
4
Ground for solenoid valves and ECU
Current range: Min.2.5A
Max.5~15A
Always
2
Voltage supply for pump motor
Battery voltage
Always
3
Voltage supply for solenoid valves
16
Voltage supply for the active wheel speed sensor FL,FR, RL, RR
Battery voltage
IG ON
9
6
8
5
signal wheel speed sensor FL, FR, RL,RR
Voltage(High) : 0.89~1.26 V
Voltage (Low) : 0.44~0.63 V
On driving
10
17
19
11
Diagnostic wire K
Voltage (High) ≥ 0.8 * IG ON
Voltage (Low) ≤ 0.2 * IG ON
On SCAN TOOL communication
18
Voltage for hybrid ECU
Battery voltage
KEY ON/OFF
20
Brake light switch
Voltage (High) ≥ 4.5 * IG ON
Voltage (Low) ≤ 2.0 * IG ON
BRAKE ON/OFF

Sensor Output On Scan Tool(ABS)

Description
Abbreviation
Unit
Remarks
1
Vehicle speed sensor
VEH. SPD
Km/h

2
Battery voltage
BATT. VOL
V

3
FL Wheel speed sensor
FL WHEEL
Km/h

4
FR Wheel speed sensor
FR WHEEL
Km/h

5
RL Wheel speed sensor
RL WHEEL
Km/h

6
RR Wheel speed sensor
RR WHEEL
Km/h

7
ABS Warning lamp
ABS LAMP
-

8
EBD Warning lamp
EBD LAMP
-

9
Brake Lamp
B/LAMP
-

10
Pump relay state
PUMP RLY
-

11
Valve relay state
VALVE RLY
-

12
Motor
MOTOR
-

13
Front Left valve(IN)
FL INLET
-

14
Front Right valve (IN)
FR INLET
-

15
Rear Left valve (IN)
RL INLET
-

16
Rear Right valve (IN)
RR INLET
-

17
Front Left valve (OUT)
FL OUTLET
-

18
Front Right valve (OUT)
FR OUTLET
-

19
Rear Left valve(OUT)
RL OUTLET
-

20
Rear Right valve (OUT)
RR OUTLET
-