F 550 4WD Super Duty V8-6.4L DSL Turbo (2008)
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Wiring, terminals or connectors
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Ajar switch
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SJB
D1-D4
D5
Test E: The Demand Lamps Are Inoperative
PINPOINT TEST E: THE DEMAND LAMPS ARE INOPERATIVE
Normal Operation
The smart junction box (SJB) supplies voltage to the demand lamps on circuit CLN09 (YE/GN). The demand lamps are grounded through circuits
GD115 (BK/GY), GD122 (BK) or GD179 (BK/VT).
This pinpoint test is intended to diagnose the following:
