Reading and Clearing Diagnostic Trouble Codes

Airbag System
A DRB scan tool is required for diagnosis of the airbag system. Refer to the proper Diagnostic Procedures for more information.

For additional testing and inspection information please refer to Powertrain Management/Computers and Control Systems/ Body Control Module

16-Way Data Link Connector - Typical:

1. Connect the DRB scan tool to the 16-way data link wire harness connector. The connector is located on the driver side lower edge of the instrument panel, inboard of the steering column.
2. Turn the ignition switch to the On position. Exit the vehicle with the DRB. Use the latest version of the proper DRB cartridge.
3. Using the DRB, read and record the active Diagnostic Trouble Code (DTC) data.
4. Read and record any stored DTC data.
5. Refer to the proper Diagnostic Procedures if any DTC is found in Step 3 or Step 4.
6. Erase the stored DTC data. If any problems remain, the stored DTC data will not erase.
7. With the ignition switch still in the On position, make sure nobody is in the vehicle.
8. From outside of the vehicle (away from the airbag modules in case of an accidental deployment) turn the ignition switch to the Off position for about ten seconds, and then back to the On position. Observe the airbag indicator lamp in the instrument cluster. It should light for six to eight seconds, and then go out. This indicates that the airbag system is functioning normally.

NOTE:
- If the airbag indicator lamp fails to light, or lights and stays on, there is an airbag system malfunction. Refer to the proper Diagnostic Procedures to diagnose the problem.
- All extended cab models (club cab or quad cab) are equipped with a structural seat, which uses an electronic structural seat belt control system to control the latching and unlatching of the integral seat belt retractors. The structural seat belt control system MUST be tested to ensure proper operation following the service of any airbag system component. See Seat Belt Control System Test Mode in the Seat Belt Control Systems for the test procedure.