Mountaineer AWD V6-4.0L (2008)
Z8-Z9
Tests AA: The Individual Trailer Lamp Is Inoperative - RH Stop/Turn Lamp
PINPOINT TEST AA: THE INDIVIDUAL TRAILER LAMP IS INOPERATIVE - RH STOP/TURN LAMP
Normal Operation
Voltage to the RH trailer stop/turn lamp is supplied by the smart junction box (SJB) through circuit CAT09 (GN).
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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 RH 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 RH trailer stop/turn
lamp voltage supply. A trailer equipped with too many RH 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
