Hyundai Santa Fe (TM): Description and operation

Hyundai Santa Fe TM 2019-2023 Service Manual / Restraint / Description and operation

Warning Lamp Activation

Warning Lamp Behavior after Ignition On

As soon as the operating voltage is applied to the SRSCM ignition input, the SRSCM activates the warning lamp for a LED lamp check.

The lamp shall turn on for 6 seconds during the initialization phase and turn off afterward.

To alert the driver, the warning lamp shall turn on for 6 seconds and off for one second then on continuously after the operating voltage is applied if any active fault exists.

1.	Active fault or historical fault counter is greater or equal to 10.

2.	Normal or historical fault counter is less than 10.

When turning the ignition switch ON during variant coding (EOL) mode, the airbag warning lamp is turned on and blinks at intervals of 1 second till the coding is completed.

In case the variant coding is normally completed, the airbag warning lamp is turned on for 6 seconds, and then turned off. Otherwise the airbag warning lamp continuously blinks at intervals of 1 second.

(1)	In case the variant coding is normally completed

(2)	In case the variant coding is not completed.

When there is active fault in the airbag system or SRSCM internal fault, the variant coding (EOL) cannot be completed. In this case, do the variant coding (EOL) procedure again after troubleshooting with the GDS.

SRSCM Independent Warning Lamp Activation

There are certain fault conditions in which the SRSCM cannot function and thus cannot control the operation of the standard warning lamp. In these cases, the standard warning lamp is directly activated by appropriate circuitry that operates independently of the SRSCM. These cases are:

1.	Loss of battery supply to the SRSCM : warning lamp is turned on continuously.

2.	Loss of internal operating voltage : warning lamp is turned on continuously.

3.	Loss of microprocessor operation : warning lamp is turned on continuously.

4.	SRSCM not connected : warning lamp is turned on continuously.

Telltale Lamp Activation

The Telltale Lamp indicates the Passenger Airbag (PAB) enabled and disabled status based on occupant status of passenger seat. If the passenger seat is empty or occupied with child (or child seat), the Passenger Airbag is disabled and the Telltale Lamp is turned ON to inform the driver that the PAB is disabled. As soon as operating voltage is applied to the SRSCM ignition input, the SRSCM activates telltale lamp prove out. OCS will send an defect status to the SRSCM as a default setting for passenger airbag deployment during the prove out period. Occupant status information and telltale status are as below table.

Occupant Status	Telltale Lamp	PAB
Empty	ON	Disabled
Child (Small Occupant)	ON	Disabled
Adult (Large Occupant)	OFF	Enabled
Defect	OFF	Enabled

After ignition on, telltale lamp will turn on for 4 seconds and turn off for 4 seconds during the initialization phase and be turned off afterward until receipt of first valid suppression message from OCS system.

General safety information and caution

Precautions General Precautions Please read the following precautions carefully before performing the airbag system service. Observe the instructions described in this manual, or the airbags could accidentally ...

Repair procedures

Component Replacement after Deployment • Before doing any SRS repairs, use the GDS to check for DTCs. Refer to the Diagnostic Trouble Code list for repairing of the related DTCs. When the ...