Hyundai Accent (HC): Brake System (ABS/ESC) / Troubleshooting

Hyundai Accent (HC) (2017 - 2022) Service Manual / Brake System (ABS/ESC) / Troubleshooting

- Troubleshooting Problem Symptoms Table Use the table below to help you find the cause of the problem. The numbers indicate the priority of the like cause of the problem. Check each part in order.If necessary, replace these parts.

SymptomSuspect AreaReference
Lower pedal or spongy pedal1. Brake system (Fluid leaks)
2. Brake system (Air in)
3. Piston seals (Worn or damaged)
4. Rear brake shoe clearance (Out of adjustment)
5. Master cylinder (Inoperative)		repair
air·bleed
replace
adjust
replace
Brake drag1. Brake pedal free play (Minimum)
2. Parking brake lever travel (Out of adjustment)
3. Parking brake wire (Sticking)
4. Rear brake shoe clearance (Out of adjustment)
5. Pad or lining (Cracked or distorted)
6. Piston (Stuck)
7. Piston (Frozen)
8. Anchor or Return spring (Inoperative)
9. Booster system (Vacuum leaks)
10. Master cylinder (Inoperative)		adjust
adjust
repair
adjust
replace
replace
replace
replace
replace
replace
Brake pull1. Piston (Sticking)
2. Pad or lining (Oily)
3. Piston (Frozen)
4. Disc (Scored)
5. Pad or lining (Cracked or distorted)		replace
replace
replace
replace
replace
Hard pedal but brake inefficient1. Brake system (Fluid leaks)
2. Brake system (Air in)
3. Pad or lining (Worn)
4. Pad or lining (Cracked or distorted)
5. Rear brake shoe clearance (Out of adjustment)
6. Pad or lining (Oily)
7. Pad or lining (Glazed)
8. Disc (Scored)
9. Booster system (Vacuum leaks)		repair
air·bleed
replace
replace
adjust
replace
replace
replace
replace
Noise from brake1. Pad or lining (Cracked or distorted)
2. Installation bolt (Loosen)
3. Disc (Scored)
4. Sliding pin (Worn)
5. Pad or lining (Dirty)
6. Pad or lining (Glazed)
7. Anchor or Return spring (Faulty)
8. Brake pad shim (Damage)
9. Shoe hold-down spring (Damage)		replace
adjust
replace
replace
clean
replace
replace
replace
replace
Brake fades1. Master cylinder (Inoperative)replace
Brake vibration, pulsation1. Brake booster (Vacuum leaks)
2. Pedal free play
3. Master cylinder (Inoperative)
4. Caliper (Damage)
5. Master cylinder cap seal
6. Damaged brake lines		replace
adjust
replace
replace
replace
replace
Brake ChatterBrake chatter is usually caused by loose or worn components, or glazed or burnt linings. Rotors with hard spots can also contribute to brake chatter. Additional causes of chatter are out-of-tolerance rotors, brake lining not securely attached to the shoes, loose wheel bearings and contaminated brake lining.

Specifications

Brake System

Other information:

Hyundai Accent (HC) (2017 - 2022) Service Manual: Parking Brake Cable

- Removal [Rear Disc Brake Type] 1.Disconnect the negative (-) battery cable. 2.Release the parking brake. 3.Remove the floor console assembly. (Refer to Body - "Floor Console") 4.Disconnect the connector of parking brake switch. 5.Remove the parking brake switch. 6.Remove the parking brake cable after loosening the nut (A). 7.Loosen the wheel nuts slightly.

Hyundai Accent (HC) (2017 - 2022) Service Manual: Occupant Classification System (OCS)

- Description In order to make normal activation of airbag system, SRSCM detects DTC(s) for the Occupant Classification System (OCS). If the seat is occupied, OCS detects passenger presences status and send signal to SRSCM via CAN.SRSCM recognizes the signal as 2 (two) different classifications; that is, 1 (Empty or small occupant with child restraint system), 2 (Occupied with large occupant and small occupant).

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