Hyundai Santa Fe: SRS Control Module (SRSCM). Repair procedures

Hyundai Santa Fe DM 2013-2018 Service Manual / Restraint / SRSCM / SRS Control Module (SRSCM). Repair procedures

Removal

1.	Remove the ignition key from the vehicle.

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

3.	Remove the floor console.

4.	Loosen the bolts and then remove the rear air vent duct (A).

5.	Pull up the lock, of the SRSCM connector, then disconnect the connector (A).

6.	Remove the SRSCM mounting bolts (3EA) from the SRSCM, then remove the SRSCM.

You must remove or install SRSCM or other SRS components with the ignition switch OFF to avoid accidental airbag deployment.

Installation

1.	Remove the ignition key from the vehicle.

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

Install the SRSCM with the SRSCM mounting bolts.

Tightening torque :

7.8 ~ 9.8 N.m (0.8 ~ 1.0 kgf.m, 5.8 ~ 7.2 lb-ft)

Use new mounting bolts when replacing the SRSCM after a collision.

4.	Connect the SRSCM harness connector.

5.	Install the rear air vent duct and floor console.

6.	Reconnect the battery negative cable.

After installing the SRSCM, confirm proper system operation:

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

A.	SRSCM is sensing the vehicle rollover. SAB, CAB, BPT will be able to expanse if mechanic moves the SRSCM on vehicle during IGN ON state. For this reason, turn the IGN OFF surely and then remove the SRSCM from vehicle.

B.	If the SRSCM is replaced always perform variant coding. Also, perform the lateral G sensor 0 point setup.

Variant coding

After replacing the SRSCM, the “Variant Coding” must be performed.

1.	On SRSCM variant coding mode, the airbag warning lamp is periodically blinking (ON: 0.5sec., OFF: 0.5sec.) until the coding is normally completed.

If the variant coding is failed, DTC B1762 (ACU Coding Error) will be displayed and the warning lamp will be turned on.

In this case, perform the variant coding procedure again after confirming the cause in “DTC Fault State Information”.

Variant Coding can be performed up to 255 times, but if the number of coding work exceeds 255 times, DTC B1683 (Exceed Maximum coding Number) will be displayed and SRSCM must be replaced.

3.	If the battery voltage is low (less than 9V), DTC B1102 will be displayed. In this case, charge the battery before anything else, and then perform the variant coding procedure. DTC B1762 (ACU Coding Error) and B1102 (Battery Voltage Low) may be displayed simultaneously.

Variant coding Procedure

■ On-Line type on GDS

1.	Ignition "OFF", connect GDS.

2.	Ignition "ON" & Engine "OFF" select vehicle name and airbag system.

3.	Select Variant coding mode.

4.	Follow steps on the screen as below.

1) Initial ACU Variant Coding screen

2) VIN Code entering screen

3) Variant coding's proceeding screen-1

4) Variant coding's proceeding screen-2

5) Variant coding is completed

1) This screen is opened when you try the variant coding again on the SRSCM which has bee performed variant coding.

2) Screen of communication failure

■ Off-line type on GDS (This can be used when not connecting to internet)

1) Initial ACU Variant Coding screen

2) ACU Coding Code entering screen

3) Screen of rechecking ACU Coding code's entering

4) Variant coding's proceeding screen-1

5) Variant coding's proceeding screen-2

6) Variant coding is completed

1) This screen is opened when you try the variant coding again on the SRSCM which has been performed variant coding.

SRS Control Module (SRSCM). Components and Components Location

Components ...

Front Impact Sensor (FIS). Description and Operation

Description The front impact sensor (FIS) is installed in the Front End Module (FEM). They are remote sensors that detect acceleration due to a collision at its mounting location. The primary purpose of ...