Escape 2WD L4-2.5L (2009)
Trailer Lamps: Pinpoint Tests
Pinpoint Test Y: The Trailer Lamps Are Inoperative - All
Trailer Lamps
Pinpoint Tests
Pinpoint Test Y: The Trailer Lamps Are Inoperative - All
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 circuits RAT08 (WH) and GD149 (BK/GY) for all of the trailer lamps.
This pinpoint test is intended to diagnose the following:
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Wiring, terminals or connectors
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Trailer
PINPOINT TEST Y: THE TRAILER LAMPS ARE INOPERATIVE - ALL
NOTE: Failure to disconnect the battery when instructed will result in false resistance readings. Refer to Battery.
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Y1 CHECK CIRCUITS RAT08 (WH) AND GD149 (BK/GY) FOR AN OPEN
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Disconnect: Trailer Tow C439.
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Disconnect: Negative Battery Cable.
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Measure the resistance between the trailer tow C439-4, circuit RAT08 (WH), harness side and ground.
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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.
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Pinpoint Test Z: The Individual Trailer Lamp Is Inoperative - Trailer Stop/Turn Lamp
Trailer Lamps
Pinpoint Tests
Pinpoint Test Z: The Individual Trailer Lamp Is Inoperative - Trailer Stop/Turn Lamp
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 Battery Junction Box (BJB) fuse 14 (15A) supplies voltage to the LH and RH trailer tow stop/turn relays. The trailer tow stop/turn relay coils are
