Thunderbird V6-232 3.8L SC (1989)
Seat Belt Warning Timer: Description and Operation
SAFETY BELT WARNING CHIME CIRCUITRY
When the ignition switch is turned to the RUN or START position, power is supplied to the tone generator chime assembly. The thermal timer
supplies power to one side of the warning lamp (from 4 to 8 seconds) through the passive restraint module. Power is also supplied to one side of the
warning lamp when either of the passive belt reel switches is open (shoulder belt disconnected), or whenever either shoulder belt transport is not
properly located at the "B" pillar after the lap belt warning indication period is over. The opposite side of the lamp goes directly to ground. The chime
goes to ground through the LH seat lap belt buckle switch, or through the passive restraint module, whenever either of the passive belt reel switches is
open. All modes of operation use a constant (non-flashing) signal for the lamp.
SAFETY BELT WARNING INDICATOR
The safety belt warning indicator lamp in the instrument cluster will illuminate four to eight seconds. In the unlikely event the shoulder belt should
stall before it reaches the B-pillar, the indicator lamp will remain illuminated after nine seconds and the chime will sound after 16 seconds until the
shoulder belt is in its locked position at the B-pillar. If only the indicator lamp remains illuminated, check to ensure both shoulder belts are latched to
the emergency release buckle. If they are latched, and the indicator lamp and chime remain on, perform Manual Override System procedures before
driving the vehicle.
