Pinpoint Test F: DTC B1863

WARNING: This page is about a different car, the 2013 Ford F-550 Super Duty, 2013 Ford F-450 Super Duty, 2013 Ford F-350 Super Duty, and 2013 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Use the Flex Probe Kit for all test connections to prevent damage to the wiring terminals. Do not use standard multi-meter probes.

F1 CHECK THE TBC MODULE GROUND CIRCUIT FOR AN OPEN
- Ignition OFF.
- Disconnect: TBC Module C2142.
- Measure the resistance between TBC module C2142-11, circuit GD115 (BK/GY), harness side and ground.
  
  Fig 1: Measuring Resistance Between TBC Module C2142-11, Circuit GD115 (BK/GY) And Ground
  Courtesy of FORD MOTOR CO.
- Is the resistance less than 5 ohms?
- Yes : GO to F2.
- No : REPAIR circuit GD115 (BK/GY) for an open. TEST the system for normal operation.
F2 CHECK FOR CORRECT TBC MODULE OPERATION
- Disconnect the TBC module connector.
- Check for:
  - corrosion
  - damaged pins
  - pushed-out pins
- Connect the TBC module connector and make sure it seats correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
- Yes : INSTALL a new TBC module. REFER to TRAILER BRAKE CONTROL (TBC) MODULE . TEST the system for normal operation.
- No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. TEST the system for normal operation.