B130C LINCOLN – Load Shed Control Circuit Short

B130C LINCOLN Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

B130C LINCOLN Possible Causes

Faulty Trailer Battery Charge Relay,Trailer Battery Charge Relay harness is open or shorted,Trailer Battery Charge Relay circuit poor electrical connection,Faulty Body Control Module (BCM)

B130C LINCOLN Description

The trailer battery charge relay coil receives voltage from the Battery Junction Box (BJB) fuse when the ignition is in RUN. The BJB fuse supplies voltage to the Trailer Battery Charge Relay switch side at all times. The Body Control Module (BCM) controls the ground side for the battery charge relay coil. The BCM provides ground for the trailer battery charge relay when the ignition is in RUN and the BCM determines that the battery voltage is not low. When the trailer battery charge relay is energized, the voltage is routed to the trailer tow connector.