Explorer 4WD V8-4.6L (2008)
Y3-Y4
Test Z: The Individual Trailer Lamp Is Inoperative - LH Stop/Turn Lamp
PINPOINT TEST Z: THE INDIVIDUAL TRAILER LAMP IS INOPERATIVE - LH STOP/TURN LAMP
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) - is 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
