Flex AWD V6-3.5L (2009)
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Fuse
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Wiring, terminals or connectors
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Trailer tow connector
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Trailer tow parking lamp relay
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Trailer
PINPOINT TEST AA: THE TRAILER LAMPS ARE INOPERATIVE - PARKING LAMPS
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.
NOTE: Failure to disconnect the battery when instructed will result in false resistance readings. Refer to Battery.
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AA1 CHECK FOR VOLTAGE THROUGH THE TRAILER TOW CONNECTOR
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Place the headlamp switch in the PARKING LAMPS ON position.
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Measure the voltage between the trailer tow connector parking lamp voltage supply pins, circuit CAT11 (BN), component side and ground.
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Is the voltage greater than 10 volts?
Yes
The vehicle is operating correctly. SEND the trailer to an authorized camper/trailer repair facility.
No
GO to AA2.
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AA2 CHECK FOR VOLTAGE TO THE TRAILER TOW CONNECTOR
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Place the headlamp switch in the OFF position.
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Disconnect: Trailer Tow C4099.
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Place the headlamp switch in the PARKING LAMPS ON position.
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Measure the voltage between the trailer tow C4099-6, circuit CAT11 (BN), harness side and ground.
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Is the voltage greater than 10 volts?
Yes
INSTALL a new trailer tow connector. TEST the system for normal operation.
No
GO to AA3.
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AA3 CHECK THE TRAILER TOW PARKING LAMP RELAY
