F 350 4WD Super Duty V8-6.4L DSL Turbo (2008)
G6-G7
Test H: DTCs C2800 and C2801 - Brake Pressure Transducer Sense Open or Short to Ground
Pinpoint Test H: DTCs C2800 or C2801 Brake Pressure Transducer Sense Open or Short to Ground
NOTE: Carry out all pinpoint tests without a trailer connected to the vehicle.
Refer to Vehicle/Diagrams, Trailer/Camper Adapter for schematic and connector information.
Normal Operation
The brake pressure transducer is attached to the brake master cylinder and they are serviced as an assembly. 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.
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 TBC FAULT to the
message center (if equipped) and revert to a limited operating strategy.
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 TBC FAULT to
the message center (if equipped) 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
