F 250 2WD Super Duty V10-6.8L (2009)
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Check the TBC module connector for:
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corrosion.
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pushed-out pins.
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spread terminals.
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Connect the TBC module connector and make sure that it is seated correctly.
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Operate the system and verify the concern is still present.
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Is the concern still present?
Yes
INSTALL a new TBC module. REFER to Trailer Brake Control (TBC) Module See: Service and Repair. CLEAR the DTCs. REPEAT the self-test.
No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the
self-test.
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Pinpoint Test D: DTCs C2800 And C2801
Auxiliary Brake System - Trailer Brake Control (TBC) Module
Pinpoint Tests
Pinpoint Test D: DTCs C2800 and C2801
NOTE: Carry out all pinpoint tests without a trailer connected to the vehicle.
Refer to Wiring Diagram Set 95, Trailer/Camper Adapter for schematic and connector information. See: Diagrams/Electrical Diagrams/Diagrams By
Number
Normal Operation
The brake pressure transducer is attached to the brake master cylinder and can be serviced separately from the master cylinder. The transducer provides
the Trailer Brake Control (TBC) module with the current brake pressure information. The TBC module supplies voltage to the transducer along circuit
LCA16 (GN) and ground along circuit RCA16 (BU/BN). The voltage returned from the transducer along circuit VCA13 (YE/BU) is used by the TBC
module to determine current brake pressure.
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C2800 Brake Pressure Transducer Sense Circuit Open - With the ignition switch in the RUN position, if the TBC detects an open on circuit
VCA13 (YE/BU), the TBC module will no longer use the pressure transducer input. The TBC module will also set DTC C2800, send TRAILER
BRAKE MODULE FAULT to the message center and revert to a limited operating strategy.
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C2801 Brake Pressure Transducer Sense Short to Ground - With the ignition switch in the RUN position, if the TBC detects a short to ground on
circuit VCA13 (YE/BU), the TBC module will no longer use the pressure transducer input. The TBC module will also set DTC C2801, send
TRAILER BRAKE MODULE FAULT to the message center and revert to a limited operating strategy.
This pinpoint test is intended to diagnose the following:
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Wiring, terminals or connectors
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Brake pressure transducer
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Vehicle not configured for trailer brakes
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Vehicle incorrectly configured for trailer brakes
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TBC module
PINPOINT TEST D: DTCs C2800 AND C2801
NOTICE: Use the Flex Probe Kit for all test connections to prevent damage to the wiring terminals. Do not use standard multi-meter probes.
NOTE: If there is no brake pressure transducer mounted on the brake master cylinder, then the system was not correctly installed. Warranty repairs on
incorrectly installed trailer brake systems will not be covered by Ford Motor Company.
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D1 CHECK FOR TBC MODULE ON-DEMAND DTCs
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Connect the scan tool.