Explorer Sport Trac 2WD V6-4.0L (2009)
REPAIR the circuit. RUN the on-demand self-test (required to clear certain DTCs). CORRECT any unresolved DTCs. CLEAR all DTCs. TEST the
system for normal operation.
-------------------------------------------------
AA6 CHECK FOR VOLTAGE TO THE TRAILER TOW CONNECTOR
-
Ignition OFF.
-
Disconnect the trailer from the vehicle.
-
For the 4-pin connector, while applying the brake pedal, measure the voltage between the trailer tow C439-1, circuit CAT09 (GN), harness side
and ground.
-
For the 7-pin connector, while applying the brake pedal, measure the voltage between the trailer tow connector pin 4, circuit CAT09 (GN),
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. TEST the system for normal operation.
No
For the 4-pin connector, GO to AA8.
For the 7-pin connector, GO to AA7.
-------------------------------------------------
AA7 CHECK FOR VOLTAGE TO THE TRAILER TOW CONNECTOR (7-PIN)
-
Disconnect: Trailer Tow C473.
-
While applying the brake pedal, measure the voltage between the trailer tow C473-4, circuit CAT09 (GN), harness side and ground.
-
Is the voltage greater than 10 volts?
Yes
INSTALL a new trailer tow connector. TEST the system for normal operation.
No
GO to AA8.
-------------------------------------------------
AA8 CHECK CIRCUIT CAT09 (GN) FOR AN OPEN