Ranger 2WD L4-2.3L (2009)
Trailer Lamps: Pinpoint Tests
Pinpoint Test T: All the Trailer Lamps Are Inoperative
Trailer Lamps
Pinpoint Tests
Pinpoint Test T: All The Trailer Lamps Are Inoperative
Refer to wiring Diagram Set 95, Trailer/Camper Adapter for schematic and connector information. See: Diagrams/Electrical Diagrams/Diagrams By
Number
Normal Operation
The trailer tow connector is provided ground through circuit RAT08 (WH) for the trailer lamps.
This pinpoint test is intended to diagnose the following:
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Wiring, terminals or connectors
-
Trailer
PINPOINT TEST T: 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.
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T1 CHECK CIRCUIT RAT08 (WH) FOR AN OPEN
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Ignition OFF.
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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 the circuit. TEST the system for normal operation.
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Pinpoint Test U: The Trailer Parking Lamps Are Inoperative
Trailer Lamps
Pinpoint Tests
Pinpoint Test U: The Trailer Parking Lamps Are Inoperative
Refer to wiring Diagram Set 95, Trailer/Camper Adapter for schematic and connector information. See: Diagrams/Electrical Diagrams/Diagrams By
Number
