Explorer 4WD V6-4.0L (2009)
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Is the resistance less than 5 ohms?
Yes
GO to Y4.
No
REPAIR the circuit. TEST the system for normal operation.
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Y4 CHECK FOR CORRECT SJB OPERATION
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Disconnect all the SJB connectors.
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Check for:
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corrosion
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damaged pins
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pushed-out pins
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Connect all the SJB connectors and make sure they seat correctly.
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Operate the system and verify the concern is still present.
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Is the concern still present?
Yes
INSTALL a new SJB. TEST the system for normal operation.
No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
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Pinpoint Test Z: The Individual Trailer Lamp Is Inoperative - LH Stop/Turn Lamp
Trailer Lamps
Pinpoint Tests
Pinpoint Test Z: The Individual Trailer Lamp Is Inoperative - LH Stop/Turn Lamp
Refer to Wiring Diagram Set 95, Trailer/Camper Adapter for schematic and connector information. See: Diagrams/Electrical Diagrams/Diagrams By
Number
Normal Operation
Voltage to the LH trailer stop/turn lamp is supplied by the Smart Junction Box (SJB) through circuit CAT06 (YE).
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DTC B2070 (Trailer Tow Relay Coil(s) Circuit Failure) - a continuous DTC that sets when the SJB detects a short to ground from the LH trailer
stop/turn lamp voltage supply circuit. The self-test must be run after the repair in order for the SJB to enable the output for the LH trailer stop/turn
lamp voltage supply. A trailer equipped with too many LH stop/turn bulbs may also set the DTC.
This pinpoint test is intended to diagnose the following:
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Trailer equipped with too many bulbs
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Wiring, terminals or connectors
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Trailer tow connector
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Trailer
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SJB