Airbag Control Unit (SRSCM : Supplemental Restraints System Control Module) must set a specification which is agreed with the vehicle in the end of line (EOL) for plant.
As the same conception, the function of "ACU Variant Coding" is to set a specification of an ACU.Due to failure in the SRSCM, if you would replace ACU in the vehicle, must perform the ACU Variant Coding.
Since a new SRSCM is normally supplied with undetermined state, the ACU has to be set up based on the vehicle specifications by operating ACU Variant Coding procedure.
The SRSCM checks its specifications in it in order to run its airbag system normally.
If the warning light of airbag is flickering continuously, that is because SRSCM(ACU) Variant Coding is not completed.
SRSCM Variant Coding is available only one time. And when it is already finished, it is impossible to retry SRSCM Variant Coding.
* Airbag Wairning Lamp on ACU Variant Coding Mode.
1) Standard : It will be flickering on every 1 second before the Variant Coding is properly done.
2) After IG "ON", airbag warning lamp turns on for 4sec and then it will be flickering every 1sec.
SRSCM (Supplemental Restraints System Control Module) | AWL (ACU Warning Lamp) |
FIS (Front Impact Sensor) | DAB (Driver Airbag) |
DSIS (Side Impact Sensor) | PAB (Passenger Airbag) |
PSIS (Side Impact Sensor) | DBS (Driver Buckle Switch) |
DSIS (Driver Side Impact Sensor) | PBS (Passenger Buckle Switch) |
PSIS (Passenger Side Impact Sensor) | DBPT (Driver Belt Pretensioner) |
DSAB (Driver Side Airbag) | PBPT (Passenger Belt Pretensioner) |
PSAB (Passenger Side Airbag) | DAPT (Driver Anchor Pretensioner) |
DCAB (Driver Curtain Airbag) | PAPT (Passenger Anchor Pretensioner) |
PCAB (Passenger Curtain Airbag) |
