Flex FWD V6-3.5L (2010)
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Pinpoint Test AC: The Trailer Lamps Are On Continuously
Refer to Wiring Diagram Set 95, Trailer/Camper Adapter for schematic and connector information. See: Diagrams/Electrical Diagrams/Diagrams By
Number
Normal Operation - Trailer Tow Stop/Turn Lamp
The trailer tow LH stop/turn relay coil receives voltage when the vehicle LH rear stoplamp is illuminated. When the trailer tow LH stop/turn relay is
energized, the voltage is routed to the trailer tow connector.
The trailer tow RH stop/turn relay coil receives voltage when the vehicle RH rear stoplamp is illuminated. When the trailer tow RH stop/turn relay is
energized, the voltage is routed to the trailer tow connector.
Trailer Tow Parking Lamp
The trailer tow parking lamp relay coil receives voltage when the vehicle parking lamps are illuminated. When the trailer tow parking lamp relay is
energized, the voltage is routed to the trailer tow connector.
This pinpoint test is intended to diagnose the following:
-
Wiring, terminals or connectors
-
Trailer tow relay
-
Trailer
PINPOINT TEST AC: THE TRAILER LAMPS ARE ON CONTINUOUSLY
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 mounted on the bumper for signs of corrosion or damage. Repair or
install a new trailer tow connector as required.
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AC1 CHECK FOR VOLTAGE AT THE TRAILER TOW CONNECTOR
-
Ignition ON.
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For the LH trailer stop/turn lamp, measure the voltage between the trailer tow connector LH stop/turn lamp voltage supply pins, circuit CAT06
(YE), component side and ground.
-
For the RH trailer stop/turn lamp, measure the voltage between the trailer tow connector RH stop/turn lamp voltage supply pins, circuit CAT09
(GN), component side and ground.
-
For the trailer parking lamps, measure the voltage between the trailer tow connector parking lamp voltage supply pins, circuit CAT11 (BN),
component side and ground.