Hyundai Palisade: SRSCM / SRS Control Module (SRSCM)

Hyundai Palisade (LX2) 2020-2024 Service Manual / Restraint / SRSCM / SRS Control Module (SRSCM)

Components and components location
Components
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Hyundai Palisade. Components and components location

1. Supplemental Restraint System Control Module (SRSCM)


Description and operation
Description
The primary purpose of the SRSCM (Supplemental Restraints System Control Module) is to discriminate between an event that warrants restraint system deployment and an event that does not. The SRSCM must decide whether to deploy the restraint system or not. After determining that pretensioners and/or airbag deployment is required, the SRSCM must supply sufficient power to the pretensioners and airbag igniters to initiate deployment.
The SRSCM determines that an impact may require deployment of the pretensioners and airbags from data obtained from impact sensors and other components in conjunction with a safing function.
The SRSCM will not be ready to detect a crash or to activate the restraint system devices until the signals in the SRSCM circuitry is stabilized.
It is possible that the SRSCM could activate the safety restraint devices in approximately 2 seconds but is guaranteed to fully function after prove-out is completed.
The SRSCM must perform a diagnostic routine and light a system readiness indicator when the ignition switch is in the ON position. The system must perform a continuous diagnostic routine and provide fault notice through a warning lamp indicator in the event of fault detection. A serial diagnostic communication interface will be used to facilitate servicing of the restraint control system.
Schematic diagrams
Supplemental Restraint System Control Module (SRSCM)

Hyundai Palisade. Schematic diagrams

No
Connector A
Connector B
1
-
-
2
-
-
3
-
-
4
-
-
5
-
-
6
-
-
7
-
-
8
-
-
9
-
-
10
B+
-
11
Crash output
-
12
Passenger airbag 1st stage (Low)
-
13
Passenger airbag 1st stage (High)
-
14
-
-
15
-
-
16
Passenger airbag OFF lamp
-
17
Passenger airbag ON lamp
Passenger curtain airbag (Low)
18
-
Passenger curtain airbag (High)
19
Driver airbag 1st stage - (High)
Driver curtain airbag (High)
20
Driver airbag 1st stage (Low)
Driver curtain airbag (Low)
21
-
Passenger side airbag (Low)
22
-
Passenger side airbag (High)
23
-
Driver side airbag (High)
24
-
Driver side airbag (Low)
25
-
-
26
C-CAN (Low)
-
27
C-CAN (High)
Driver seat belt pretensioner (Low)
28
IGN 1
Driver seat belt pretensioner (High)
29
Front driver impact sensor LH - (High)
-
30
Front impact sensor LH - (Low)
-
31
Front impact sensor RH - (Low)
-
32
Front impact sensor RH - (High)
Passenger seat belt pretensioner (High)
33
-
Passenger seat belt pretensioner (Low)
34
-
-
35
P-CAN (Low)
-
36
P-CAN (High))
-
37

-
38
-
39
-
40
Ground
41
Driver side rear impact sensor (Low)
42
Driver side rear impact sensor (High)
43
Driver pressure side impact sensor (High)
44
Driver pressure side impact sensor (Low)
45
Passenger pressure side impact sensor (Low)
46
Passenger pressure side impact sensor (High)
47
Driver side impact sensor (High)
48
Driver side impact sensor (Low)
49
Passenger side impact sensor (Low)
50
Passenger side impact sensor (High)
51
Passenger side rear impact sensor (High)
52
Passenger side rear impact sensor (Low)

Repair procedures
Removal
1.
Turn the engine OFF.
2.
Disconnect the battery negative cable and wait for at least three minutes before beginning work.
3.
Remove the floor console assembly.
(Refer to Body - "Floor Console Assembly")
4.
Loosen the mounting bolts and then remove the air duct.
5.
Pull up the lock of the SRSCM connector to disconnect the connector.

Hyundai Palisade. Repair procedures

6.
Remove the SRSCM mounting bolts and then remove the SRSCM.
Hyundai Palisade. Repair procedures   
You must remove or install the SRSCM or other SRS components with the ignition switch OFF to avoid accidental airbag deployment.

Hyundai Palisade. Repair procedures

Installation
1.
Turn the engine OFF.
2.
Disconnect the battery negative cable and wait for at least three minutes before beginning work.
3.
Install the SRSCM with the SRSCM mounting bolts (3EA).
Tightening torque :
9.8 - 13.7 N.m (1.0 - 1.4 kgf.m, 7.2 - 10.1 lb-ft)

Hyundai Palisade. Repair procedures

4.
Connect the SRSCM harness connector.
5.
Install the rear air duct.
6.
Install the floor console assembly.
(Refer to Body - "Floor Console Assembly")
7.
Reconnect the battery negative cable.
8.
After installing the SRSCM, confirm proper system operation:
Turn the ignition switch ON; the SRS indicator light should be turned on for about six seconds and then go off.
Hyundai Palisade. Repair procedures   
If the SRSCM is replaced always, perform variant coding. Also, perform the lateral G sensor 0 point setup.
(Refer to Brake System - "Yaw-rate and Lateral G Sensor")
Variant Coding
After replacing the SRSCM with a new one, the “Variant Coding” procedure must be performed.
Variant Coding Procedure
1.
Connect the cable of GDS to the data link connector in driver side crash pad lower panel, and turn on the GDS.
2.
Select the 'S/W Management' and 'Car model'.

Hyundai Palisade. Repair procedures

3.
Select "Airbag" and "ACU/SRSCM Variant Coding".

Hyundai Palisade. Repair procedures

4.
Perform the "ACU/SRSCM Variant Coding" procedure according to the GDS screen message.

Hyundai Palisade. Repair procedures

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