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

Hyundai Ioniq (AE) 2017-2024 Service 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)

Components and components location

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Repair procedures

AHB Brake System Bleeding ProcedureAir Bleeding Tool Installation Procedure • 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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