Expedition 2WD V8-281 4.6L VIN W EFI (1997)
Audible Warning Device: Flow of Diagnosis
1. Verify the customer's original concern.
2. If the inspection reveals an obvious concern that can be readily identified, repair as required.
3. Before removing and installing the Generic Electronic Module (GEM) connectors, you must disconnect vehicle power at the battery.
4. If continuous DTCs are recorded and the symptom is not present when performing the pinpoint tests, an intermittent problem may be the cause.
Always check for loose connections and corroded terminals when there is evidence of an intermittent problem. Complete the entire pinpoint test
related to the symptom before replacing the GEM.
5. If the concern remains after the inspection, determine the symptoms and go to the Symptom Chart. See: Symptom Related Diagnostic Procedures
6. When probing the fuse junction panel, power distribution box or connectors, damage will result to the connector receptacle if you use a probe that
is too large for the receptacle.
