Ford Workshop Service and Repair Manuals > F 150 Heritage 2WD Pickup V8-4.6L SOHC VIN W (2004) > Accessories and Optional Equipment | Towing / Trailer System | Trailer Lamps | Component Information | Testing and Inspection | Initial Inspection and Diagnostic Overview

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Test AA4-AA5

Tests AB

PINPOINT TEST AB: THE TRAILER LAMPS ARE INOPERATIVE - TRAILER REVERSING LAMPS

Test AB1-AB2

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