F 150 4WD Pickup V8-5.4L SOHC VIN 3 (1999)
Audible Warning Device: Testing and Inspection
Initial Inspection and Diagnostic Overview
1. Verify the customer concern.
2. Visually inspect for obvious signs of mechanical and electrical damage.
VISUAL INSPECTION CHART
Mechanical
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Key-in-ignition warning switch
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Door open warning lamp switch
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Safety belt warning indicator switch
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Headlamp
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4X4 indicator lamp
Electrical
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Central junction box (CJB) Fuse:
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6 (5 A)
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8 (5 A)
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15 (5 A)
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20 (5 A)
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Battery junction box (BJB) Fuse:
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103 (50 A)
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Damaged wiring harness
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Loose or corroded connections
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Generic Electronic Module (GEM)/Central Timer Module (CTM)
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Restraint control module (RCM)
3. If the concern remains after the inspection, connect the 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 the NGS does not communicate with the vehicle:
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Check that the program card is correctly installed.
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Check the connections to the vehicle
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Check the ignition switch position.
4. If the NGS still does not communicate with the vehicle, refer to the New Generation STAR Tester manual.
5. Carry out the DATA LINK DIAGNOSTIC TEST. If the NGS responds with:
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CKT914, CKT915 or CKT70 = ALL ECUS NO RESP/NOT EQUIP
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NO RESP/NOT EQUIP for GEM/CTM, go to Pinpoint Test A. See: Pinpoint Tests/A: No Communications With GEM Module
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NO RESP/NOT EQUIP for RCM.
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SYSTEM PASSED, retrieve and record the continuous Diagnostic Trouble Codes (DTCs), erase the continuous DTCs and carry out self-test
diagnostics for the RCM, GEM or CTM.
6. If the DTCs retrieved are related to the concern, go to GEM/CTM Module Diagnostic Trouble Code (DTC) Index to continue diagnostics. See:
Diagnostic Trouble Code Descriptions
7. If no DTCs related to the concern are retrieved, proceed to Symptom Chart to continue diagnostics. See: Symptom Related Diagnostic Procedures
Diagnostic Trouble Code Descriptions
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