Mountaineer AWD V6-4.0L VIN K Flex Fuel (2003)
Test AC4-AC5
Normal Operation
Circuit 140 (BK/PK) supplies power to the reversing lamps and the coil side of the trailer tow reversing lamp relay. When the trailer tow reversing
lamp relay is energized, voltage received from circuit 1043 (DG/YE) is switched to the trailer tow connector through circuit 963 (BK/LG). Ground is
supplied to the trailer tow reversing lamp relay through circuit 1205 (BK).
Possible Causes
-
circuit 140 (BK/PK) open
-
circuit 963 (BK/LG) open
-
circuit 1043 (DG/YE) open
-
circuit 1205 (BK) open
-
trailer tow reversing lamp relay
-
trailer
Tests AD
PINPOINT TEST AD: THE TRAILER LAMPS ARE ON CONTINUOUSLY
