Description and Operation

Warning Lamp Activation

Warning Lamp Behavior After Ignition ON

As soon as operating voltage is supplied to the SRSCM ignition input, the SRSCM activates the warning lamp for LED lamp check. The lamp should illuminate for 6 seconds during the initialization phase and then turn off. To alert the driver, the warning lamp should illuminate for 6 seconds and go off for one second, then remain on continuously after operating voltage is supplied, if an active malfunction exists.

1. 1
   The active fault counter or historical fault counter is greater than or equal to 10.

   

2. 2
   The normal or historical fault counter is less than 10.

   

3. 3
   When the ignition is turned on in End-of-Line (EOL) variant coding mode, the airbag warning lamp illuminates and flashes at 1-second intervals until coding is completed. If variant coding is completed normally, the airbag warning lamp illuminates for 6 seconds and then turns off. Otherwise, the airbag warning lamp flashes continuously at 1-second intervals.

   1. If variant coding is completed normally

      

   2. If variant coding is not completed

      

   If an active fault exists in the airbag system or an internal SRSCM fault is present, End-of-Line (EOL) variant coding cannot be completed. In this case, repeat the variant coding (EOL) procedure after troubleshooting the fault using GDS.
4. 4
   Loss of SRSCM battery power: warning lamp remains on continuously.
5. 5
   Loss of internal operating voltage: warning lamp remains on continuously.
6. 6
   Loss of microprocessor operation: warning lamp remains on continuously.
7. 7
   SRSCM not connected: warning lamp remains on continuously.

Independent Activation of SRSCM Warning Lamp: There are certain failure conditions under which the SRSCM cannot function and therefore cannot control the operation of the standard warning lamp. In these cases, the standard warning lamp is activated directly by the corresponding circuit, which operates independently of the SRSCM. These cases are: