Escape 4WD L4-2.5L (2010)
Trailer Lamps: Pinpoint Tests
Pinpoint Test Y: All The Trailer Lamps Are Inoperative
Trailer Lamps
Pinpoint Tests
Pinpoint Test Y: All The Trailer Lamps Are Inoperative
Refer to Wiring Diagram Set 95 (Escape/Mariner, Escape Hybrid/Mariner Hybrid), Trailer/Camper Adapter for schematic and connector information.
See: Diagrams/Electrical Diagrams/Diagrams By Number
Normal Operation
The trailer tow connector receives ground through a dedicated ground circuit. This circuit is the shared ground for all of the trailer lamps.
This pinpoint test is intended to diagnose the following:
-
Wiring, terminals or connectors
-
Trailer
PINPOINT TEST Y: ALL THE TRAILER LAMPS ARE INOPERATIVE
NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the
connector.
NOTE: Failure to disconnect the battery when instructed will result in false resistance readings. Refer to Battery.
-------------------------------------------------
Y1 CHECK THE TRAILER TOW GROUND CIRCUITS FOR AN OPEN
-
Disconnect: Trailer Tow C439.
-
Disconnect: Negative Battery Cable.
-
Measure the resistance between the trailer tow C439-4, circuit RAT08 (WH), harness side and ground.
-
Is the resistance less than 5 ohms?
Yes
The vehicle is operating correctly. SEND the trailer to an authorized camper/trailer repair facility.
No
REPAIR circuit RAT08 (WH) or circuit GD149 (BK/GY) for an open. TEST the system for normal operation.
-------------------------------------------------
Pinpoint Test Z: The Trailer Stop/Turn Lamp Is Inoperative
Trailer Lamps
Pinpoint Tests
Pinpoint Test Z: The Trailer Stop/Turn Lamp Is Inoperative
Refer to Wiring Diagram Set 95 (Escape/Mariner, Escape Hybrid/Mariner Hybrid), Trailer/Camper Adapter for schematic and connector information.
See: Diagrams/Electrical Diagrams/Diagrams By Number
