Flex AWD V6-3.5L (2009)
Normal Operation
The Auxiliary Junction Box (AJB) fuse 1 (10A) receives voltage from circuit CLS10 (GY/BN) when the vehicle reversing lamps are illuminated. The
voltage is then routed to the trailer tow connector through circuit CAT03 (GY/BN).
This pinpoint test is intended to diagnose the following:
-
Fuse
-
Wiring, terminals or connectors
-
Trailer tow connector
-
Trailer
PINPOINT TEST AB: THE TRAILER LAMPS ARE INOPERATIVE - REVERSING 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.
-------------------------------------------------
AB1 CHECK FOR VOLTAGE THROUGH THE TRAILER TOW CONNECTOR
-
Apply the parking brake.
-
Ignition ON.
-
Select REVERSE.
-
Measure the voltage between the trailer tow connector reversing lamp voltage supply pin, circuit CAT03 (GY/BN), component side and ground.
-
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 AB2.
-------------------------------------------------
AB2 CHECK FOR VOLTAGE TO THE TRAILER TOW CONNECTOR
-
Disconnect: Trailer Tow C4099.
-
Apply the parking brake.
-
Ignition ON.
-
Select REVERSE.
-
Measure the voltage between the trailer tow C4099-7, circuit CAT03 (GY/BN), harness side and ground.
-
Is the voltage greater than 10 volts?
Yes
INSTALL a new trailer tow connector. TEST the system for normal operation.
