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
-



    Description and Operation
    Description This specification applies to HCU(Hydraulic Control Unit) and ECU(Electronic Control Unit) of the HECU.(Hydraulic and Electronic Control Unit) This specification is for the wiri ...

    Troubleshooting
    Standard Flow of Diagnostic Troubleshooting Notes With Regard To Diagnosis The phenomena listed in the following table are not abnormal. Phenomenon Explanatio ...