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The wire entry view( back) of the green connetor( c-2 )
Key UP
E-16--------------E-1
F-16--------------F-1
If you pull C-2 you loose power to the CCM.
If the light still lights.... the control line from the CCM is grounded ( one side of the light is +12 all the time)
It's a grey black ( switched ground ) from the light to C-13 on C-1( grey connector) CCM.
Now according to the book for a 93 ( which should be the same as yours)
Disconnect CCM C-1 Grey connector, turn Ignition ON, seat belt fastened does fasten seat belt indicator turn off?
If yes
Ign off
Replace Grey connector to CCM
Ign on
Put a test light between +12 volts and F-10
( C-2 green connector, black line )
If the light lights unbuckle the seatbelt
Does the light go out?
If no there is a short somewhere in that black line to ground.
If the light goes out but the status of the fasten seatbelts light dosen't change.. your CCM is toast ( for that function, probably)
We could chase it further... but it gets MORE complicated.
Mike