Expedition 4WD V8-281 4.6L SOHC (1998)
Audible Warning Device: Initial Inspection and Diagnostic Overview
1. Verify the customer concern.
2. Visually inspect for obvious signs of mechanical and electrical damage using the Visual Inspection Chart.
VISUAL INSPECTION CHART
Mechanical
^
Key-in-ignition warning switch
^
Door open warning lamp switch
^
Safety belt warning indicator switch
Electrical
^
Fuse(s)
^
Damaged wiring harness
^
Loose or corroded connections
^
Circuitry
3. If the concern remains after the inspection, connect New Generation STAR (NGS) Tester to the Data Link Connector (DLC) located beneath the
instrument panel and select the vehicle to be tested from the NGS menu. If NGS does not communicate with the vehicle:
^
Check that the program card is properly installed.
^
Check the connections to the vehicle.
^
Check the ignition switch position.
4. If NGS still does not communicate with the vehicle.
5. Perform the DATA LINK DIAGNOSTIC TEST. If the NGS responds with:
^
CKT 914, CKT 915 or CKT 70 = ALL ECUS NO RESP/NOT EQUIP, refer to Information Bus.
^
NO RESP/NOT EQUIP for GEM, go to Pinpoint Test G.
^
SYSTEM PASSED, retrieve and record the continuous Diagnostic Trouble Codes (DTCs), erase the continuous DTCs and perform self-test
diagnostics for the GEM.
6. If the DTCs retrieved are related to the concern, go to GEM Diagnostic Trouble Code (DTC) Index to continue diagnostics.
7. If no DTCs related to the concern are retrieved, proceed to Symptom Chart to continue diagnostics.
