Mark LT 4WD V8-5.4L VIN 5 (2006)
J7 Continued
Normal Operation
Circuit 511 (LG) supplies voltage to the multifunction switch and the high mounted stoplamp when the brake pedal is pressed. The multifunction
switch internally routes the voltage (when in the NEUTRAL position) to circuits 9 (LG/OG) (LH stoplamp) and 5 (OG/LB) (RH stoplamp). Circuits 9
(LG/OG) and 5 (OG/LB) are routed to the central junction box (CJB) fuses 36 and 42 and then to the LH and RH stoplamps, accordingly.
Possible Causes
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Circuit 5 (OG/LB) open
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Circuit 9 (LG/OG) open
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Circuit 57 (BK) open
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Circuit 511 (LG) open
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Multifunction switch
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CJB
Test K: The Stoplamps Are On Continuously
PINPOINT TEST K: THE STOPLAMPS ARE ON CONTINUOUSLY
K1-K2