Explorer Sport Trac 4WD V8-4.6L (2008)
AA8-AA9
Tests AB: The Trailer Lamps Are On Continuously
PINPOINT TEST AB: THE TRAILER LAMPS ARE ON CONTINUOUSLY
Normal Operation
Voltage to the trailer tow lamps is controlled by the smart junction box (SJB). Circuits CAT06 (YE) and CAT09 (GN) supply voltage to the trailer
tow LH and RH stoplamps, respectively.
The trailer tow parking lamps share the same voltage supply with the vehicle parking lamps.
This pinpoint test is intended to diagnose the following:
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Wiring, terminals or connectors
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Trailer
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SJB
AB1
