For 1990-2009 cars only
The inflatable restraint sensing and diagnostic module (SDM) receives a discrete input from the driver seat belt switch. The driver seat switch is closed when the seat belt is buckled.
Fasten Safety Belt Indicator (ISO Symbol) (Red)
The fasten safety belt indicator may only be ON during RUN. The IPC illuminates the fasten safety belt indicator under the following conditions:
| • | During the bulb check. |
| • | The inflatable restraint sensing and diagnostic module (SDM) sends the status of the driver's seat belt switch to the IPC via a class 2 message. If the seat belt is unfastened, the IPC will illuminate the fasten safety belt indicator for 72 seconds or until the seat belt is fastened. |
If the seat belt is unfastened within 8 seconds following bulb check, the IPC sends a class 2 serial data message requesting 5 chimes to sound.
