F 350 4WD Super Duty V8-6.4L DSL Turbo (2008)
Trailer Connector: All Technical Service Bulletins
Electrical - Trailer Wiring Fault/DTC C2806
TSB 09-9-1
05/18/09
WIRING FAULT ON TRAILER DISPLAYED IN
MESSAGE CENTER - DTC C2806
FORD:
2008 F-Super Duty
ISSUE
Some 2008 F-Super Duty vehicles equipped with a factory trailer brake control (TBC) system may have a wiring fault on trailer in the message center
and/or diagnostic trouble code (DTC) C2806 stored in the trailer brake control module. DTC C2806 is set when a short exists between any circuit and
the output line.
ACTION
Refer to the following Service Procedure to correct the condition.
SERVICE PROCEDURE
NOTE
PLEASE PERFORM EVERY STEP TO AVOID
REPEAT REPAIRS:
1.
All circuits in 7-pin connector bundle, right/left turn signal, back up lamp, brake lamp, and tail lamp should be activated in turn, while checking for
voltage on output line.
2.
Check aftermarket wiring, especially on 5th wheel hitches. All wiring must be soldered and shrink wrapped. Use of Scotch locks or other
connectors is not recommended.
3.
Check for water intrusion in connector C4099 and round 7-pin connector.
a.
If water intrusion is found - Replacement is necessary for both connector C4099 with a new pigtail and the round 7-pin connector. Add
Motorcraft® Silicone Brake Caliper Grease and Dielectric Compound to connector pins.
b.
If no water intrusion exists, follow Workshop Manual, Section 206-10 pinpoint test.
Parts Block
WARRANTY STATUS: Eligible Under Provisions Of New Vehicle Limited Warranty Coverage
IMPORTANT: Warranty coverage limits/policies are not altered by a TSB. Warranty coverage limits are determined by the identified causal part.
OPERATION
DESCRIPTION
TIME
090901A
2008 F-Super Duty:
1.1 Hrs.
Replace Connector,
Includes Time To Check
Voltages (Do Not Use With
14200A)
DEALER CODING
CONDITION
BASIC PART NO.
CODE
13A576
42
