我用adams仿真整车模型是出现下面的信息，请问是怎么回事啊？

WARNING: A user COUSUB subroutine is required for COUPLER JEEP.COUPLER_1.
WARNING: A user COUXX subroutine is required for COUPLER JEEP.COUPLER_1.
WARNING: A user COUXX2 subroutine is required for COUPLER JEEP.COUPLER_1.
WARNING: A user COUSUB subroutine is required for COUPLER JEEP.COUPLER_1.
WARNING: A user COUXX subroutine is required for COUPLER JEEP.COUPLER_1.
WARNING: A user COUSUB subroutine is required for COUPLER JEEP.COUPLER_1.
WARNING: A user COUXX subroutine is required for COUPLER JEEP.COUPLER_1.
WARNING: A user COUSUB subroutine is required for COUPLER JEEP.COUPLER_1.
WARNING: A user COUXX subroutine is required for COUPLER JEEP.COUPLER_1.
WARNING: A user COUSUB subroutine is required for COUPLER JEEP.COUPLER_1.
WARNING: A user COUXX subroutine is required for COUPLER JEEP.COUPLER_1.
WARNING: A user COUSUB subroutine is required for COUPLER JEEP.COUPLER_1.
WARNING: A user COUXX subroutine is required for COUPLER JEEP.COUPLER_1.
WARNING: A user COUXX2 subroutine is required for COUPLER JEEP.COUPLER_1.
WARNING: A user COUSUB subroutine is required for COUPLER JEEP.COUPLER_1.
WARNING: A user COUXX subroutine is required for COUPLER JEEP.COUPLER_1.
WARNING: A user COUSUB subroutine is required for COUPLER JEEP.COUPLER_1.
WARNING: A user COUXX subroutine is required for COUPLER JEEP.COUPLER_1.
WARNING: A user COUSUB subroutine is required for COUPLER JEEP.COUPLER_1.
WARNING: A user COUXX subroutine is required for COUPLER JEEP.COUPLER_1.
WARNING: A user COUSUB subroutine is required for COUPLER JEEP.COUPLER_1.
WARNING: A user COUXX subroutine is required for COUPLER JEEP.COUPLER_1.
ERROR: Subroutine COUSUB is not supplied for COUPLER JEEP.COUPLER_1.
ERROR: Abnormal termination encountered in Adams/Solver.

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