Explorer 4WD V6-4.0L (2009)
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Wiring, terminals or connectors
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Trailer
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SJB
PINPOINT TEST AB: THE TRAILER LAMPS ARE ON CONTINUOUSLY
NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the
connector.
NOTE: Before beginning diagnostics, visually inspect the trailer tow connector for signs of corrosion or damage. Repair or install a new trailer tow
connector as required.
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AB1 CHECK FOR VOLTAGE AT THE TRAILER TOW CONNECTOR
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Ignition OFF.
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Disconnect the trailer from the vehicle.
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Ignition ON.
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Measure the voltage between the trailer tow connector, harness side and ground as follows:
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Is any voltage present?
Yes
GO to AB2.
No
The vehicle is operating correctly. SEND the trailer to an authorized camper/trailer repair facility.
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AB2 CHECK THE SJB
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Ignition OFF.
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Disconnect: SJB C2280a.
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Ignition ON.
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Measure the voltage between the trailer tow connector, harness side and ground as follows:
