Mountaineer AWD V8-4.6L (2010)
Yes
INSTALL a new SJB. REFER to Body Control Systems. 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. CLEAR the DTCs. REPEAT the
self-test.
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Pinpoint Test AA: The Trailer RH Stop/Turn Lamp Is Inoperative
Trailer Lamps
Pinpoint Tests
Pinpoint Test AA: The Trailer RH Stop/Turn Lamp Is Inoperative
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 RH trailer stop/turn lamp is supplied by the Smart Junction Box (SJB) to the trailer tow connector for the RH trailer stop/turn lamp.
-
DTC B2070 (Trailer Tow Relay Coil(s) Circuit Failure) - 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:
-
Trailer equipped with too many bulbs
-
Wiring, terminals or connectors
-
Trailer tow connector
-
Trailer
-
SJB
PINPOINT TEST AA: THE TRAILER RH STOP/TURN LAMP IS INOPERATIVE
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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AA1 CHECK THE RECORDED DTCs FROM THE SJB SELF-TEST
-
Check the recorded results from the SJB self-test.
-
Was DTC B2070 present?
Yes
GO to AA2.
No
GO to AA6.
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AA2 CLEAR THE DTCs AND REPEAT THE ON-DEMAND SELF-TEST WITH THE TRAILER DISCONNECTED
-
Disconnect the trailer from the vehicle.
