The scan tool used provides the following capabilities:
| • | Reads the data list |
| • | Reads current and history Diagnostic Trouble Codes (DTCs) |
| • | Clears the DTCs after a repair is completed |
Before attempting to communicate with the SIR system, ensure that the scan tool contains the latest software. Connect the scan tool to the data link connector (DLC) and turn the ignition switch to the RUN position in order to use the scan tool. The scan tool reads serial data sent from the inflatable restraint sensing and diagnostic module (SDM) serial data output terminal 5 and terminal 17 to the DLC terminal 2. The following table shows the typical values of the data displays when the following conditions exist:
| • | The ignition switch is in the RUN position. |
| • | The engine is OFF. |
| • | The driver seatbelt is buckled. |
Data List | Description | Typical Value |
|---|---|---|
Ignition 1 | Ignition 1 power feed | 12 V |
Driver Senselo | Driver low terminal voltage | 3-4 V |
Passenger Senselo | Passenger low terminal voltage | 3-4 V |
Dr. Bag Energy Reserve | Steering wheel module loop reserve voltage | 22-24 V |
Pass Bag Energy Reserve | I/P module loop reserve voltage | 22-24 V |
Lamp Continuous on Time | Continuous warning lamp ON time | 0-182 Hrs |
Ignition cycles lamp ON | Number of ignition cycles with warning lamp ON | 0-125 times |
Ign. cycles lamp OFF | Number of ignition cycles with the warning lamp OFF | 0-125 times |
Driver VDIF | Voltage difference between driver high and driver low terminals | 4-8 mV |
Passenger VDIF | Voltage difference between passenger high and passenger low terminals | 4-8 mV |
Driver Seatbelt | Driver seatbelt status (Buckled/Unbuckled) | Unbuckled |
