Diagnosing Customer Concerns With On-Demand DTCs
WARNING: This page is about a different car, the 2009 Mercury Milan, 2009 Lincoln MKZ, and 2009 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
If the air bag warning indicator is reported ON by the customer when the vehicle comes in for service, connect the scan tool and follow the DIAGNOSTIC TESTS to identify the concern.
Once the DTC is known, read the Normal Operation of the pinpoint test for the DTC involved.
Using the scan tool with the use of PIDs and active command(s) may be of assistance in diagnosing the concern.
- Follow the depowering procedure as directed.
- Determine the location of components involved in creating the DTC.
- Carry out a thorough visual inspection of:
- components.
- connectors.
- splices and wiring harnesses.
- insulation on conductors.