Hyundai Accent (HC): SRSCM / Occupant Classification System (OCS)

Hyundai Accent (HC) (2017 - 2022) Service Manual / Restraint / SRSCM / 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).With these signal, ACU determines whether it needs to deploy the PAB (Passenger Airbag) or not. - Components

1. OCS (Occupant Classification System) Unit
2. OCS (Occupant Classification System) Sensor
3. Passenger Seat


- Removal [OCS ECU ]

1.Disconnect the battery negative cable, and wait for at least three minutes before beginning work.

2.Remove the front passenger seat assembly.(Refer to Body - "Front Seat Assembly")

3.Disconnect the OCS ECU connector (A).

4.Remove the OCS mounting bolts.

[OCS Mat ]

1.Disconnect the battery negative cable, and wait for at least three minutes before beginning work.

2.Remove the front passenger seat assembly.(Refer to Body - "Front Seat Assembly")

3.Remove the front seat cushion cover.(Refer to Body - "Front Seat Cusion Cover")

4.Remove the front seat cushion assembly.(Refer to Body - "Front Seat Cushion Cover")

- Installation [OCS ECU ]

1.Install the occupant classification system unit on the Front seat track assembly.

2.Connect the occupant classification system unit connector.

3.Install the front passenger seat assembly.(Refer to Body - "Front Seat Assembly")

4.Reconnect the battery negative cable.

5.After installing the occupant classification system, confirm proper system operation.

   

• Turn the ignition switch ON the SRS indicator should be turned on for about six seconds and then go off.

• Telltale lamp will turn on for 4 seconds and be turned off for 3 seconds. After the 7 seconds, it shall remain off if the OCS does not require suppression and the passenger airbag is enabled.

• Be sure to perform OCS zeroing with GDS after replacing OCS equipped seat cushion.

- OCS Rest Procedure You should perform OCS Reset procedure after service or replacement about all part of the passenger seat. (Not included full seat assembly)

1.Ignition "OFF", connect GDS.

2.Ignition "ON" & Engine "OFF", select Airbag system and "Body Sensor Reset" mode.

3.The GDS will show the two OCS Reset function steps.

(1)Erase OCS diagnostic codes.

(2)OCS initialization.

   

• This Step must be done during front passenger seat empty.

4.Select product configuration.

(1)C1 : No heater

(2)C2 : Heater

   

• Before the starting the OCS Rest process, cross check seat correct configuration with actual vehicle.

• If you see the center console, you can find different buttons per each different seat configuration type. (Refer to the below picture)

5.The OCS initialization procedure will be performed.C1 : No Heater Type Reset

C2 : Heater Type Reset (Including Cooling Seat)

   

• Erase the SRSCM diagnostic codes after completing the OCS reset.

DTC CodeCode NameDescription
B1763ECU Defect
1.
Reset (Calibration setting) is not completed
2.
ECU is damaged from physical stress
B1764MAT Defect
1.
Mat and ECU are not connected .
2.
Mat is damaged from physical stress.
B1767Algo cut-off
1.
Too much humidity.
B1111IGN voltage high
1.
IGN voltage high.
B1112IGN voltage low
1.
IGN voltage low.
B1603CAN bus off
1.
CAN Bus is not working.
B1697ACU communication error
1.
CAN Bus is not working.
2.
ACU is not working.

SRS Control Module (SRSCM)

Airbag Module

Other information:

Hyundai Accent (HC) (2017 - 2022) Service Manual: Specifications

- Specification Air Conditioner itemSpecification CompressorType6VSe12 Oil type & CapacityFD46XG (IDEMITSU) 110 ± 10cc (3.72 ± 0.34oz.) Displacement126 cc / rev Pulley type6PK - TYPE Expansion valveTypeBlock type RefrigerantTypeR - 1234yf Capacity480 ± 25 g (16.9 ± 0.88 oz.) Blower Unit ItemSpecification Fresh and recirculationOperating methodActuator BlowerTypeSirocco pan Speed stepAuto + 8 speed (Automatic), 7 speed (Manual) Speed controlPWM (Automatic, Manual) Air filterTypeParticle filter Heater and Evaporator Unit ItemSpecification HeaterTypeFin & Tube type TypeTube - Fin 1Way Mode operating methodCable, Actuator Temperature operating methodCable, Actuator EvaporatorTemperature control typeEvaporator temperature sensor Blower singularA/C Output OFF TemperatureA/C Output ON Temperature Manual control1 - 3 speed1.

Hyundai Accent (HC) (2017 - 2022) Service Manual: Specifications

- Specification ItemResistance (Ω) Driver Airbag (DAB) 2.2 - 6.0 Passenger Airbag (PAB) 1.6 - 6.0 Side Airbag (SAB) 1.6 - 6.0 Curtain Airbag1.6 - 6.0 Seat Belt Pretensioner (BPT) 1.6 - 6.0 Tightening Torques ItemN.mkgf.mlb-ft Supplemental Restraint System Control Module 8 - 100.8 - 1.0 5.8 - 7.2 Passenger Air Bag 3.9 - 5.9 0.4 - 0.

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