Hyundai Ioniq (AE): AHB(Active Hydraulic Boost) System / Schematic diagrams

Hyundai Ioniq (AE) 2017-2022 Service & Repair Manual / Brake System / AHB(Active Hydraulic Boost) System / Schematic diagrams

Terminal Function
IBAU Connector Input / Output

No
Description
No
Description
1
E/R Fuse & Relay Box
(Multi Fuse - AHB)
24
Electric Parking Brake Switch
(Auto Hold Swutch)
2
PSU Motor (+)
25
-
3
-
26
Parking Brake Switch
4
Shield Cable Ground
27
Rear Wheel Sensor LH (SIG)
5
E/R Fuse & Relay Box
PSU Motor (GND)
28
Front Wheel Sensor LH (SIG)
6
Brake Pedal Module (PDT PWR) 
29
Driver Door Switch
7
Brake Pedal Module (PDF PWR)
30
E/R Fuse & Relay Box
(Multi Fuse - AHB 2)
8
E/R Fuse & Relay Box
(Stop Signal Electronic Module)
31
Brake Pedal Module (PDF GND)
9
-
32
-
10
Brake Pedal Module (PDT GND)
33
Rear Wheel Sensor LH (VCC)
11
Shield Cable Ground
34
Rear Wheel Sensor RH (VCC)
12
-
35
-
13
PSU Motor (-)
36
Brake light switch
14
Ground 
37
-
15
-
38
C-CAN (High)
16
Crash Pad Switch (ESC OFF Switch)
39
C-CAN (Low)
17
Front Wheel Sensor LH (VCC)
40
Vehicle Speed :
Smart Key Control Module, PCM
18
Front Wheel Sensor RH (VCC)
41
-
19
P-CAN (High)
42
Front Wheel Sensor RH (SIG)
20
P-CAN (Low)
43
Rear Wheel Sensor RH (SIG)
21
ESS Drive
44
Stop Lamp Switch
22
Brake Pedal Module (PDT SIG)
45
- 
23
Brake Pedal Module (PDF SIG)
46
Ground (GE06)

    Components1. Intergrated Brake Actuation Unit 2. Pressure Source Unit

    AHB Brake System Bleeding ProcedureAir Bleeding Tool Installation Procedure    â€¢ To prevent the brake fluid reservoir tank from beingdamaged and ensure the safety of worker, set thepressure of the gauge to the standard value beforeinstalling the SST.

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