ABS/TCS - TC Lamp ON/DTC C1277/C1278 Set

TSB 08-20-8

10/13/08

STEERING WHEEL ANGLE CIRCUIT AND/OR SIGNAL
FAILURE - C1277-C1278 - BUILT ON/OR BEFORE
4/10/2008

FORD:
2007-2008 Expedition

LINCOLN:
2007-2008 Navigator

This article supersedes TSB 08-10-3 to update the Part List and Service procedure.

ISSUE
Some 2007-2008 Expedition and Navigator vehicles built on or before 4/10/2008 may exhibit a traction control light (TCL) on with diagnostic trouble codes (DTCs) C1277 and/or C1278 (steering wheel angle 1 and 2 circuit failure and/or signal faulted).

ACTION
Follow the Service Procedure steps to correct the condition.

SERVICE PROCEDURE

1. Check to see if the steering wheel rotation (SWR) sensor wiring near the connector has come in contact with or is touching the brake pedal bracket. Vibration of the harness may cause interruption in the SWR signal.

a. If yes, go to Step 2.

b. If no, do not continue with this procedure. Refer to normal diagnosis in the Workshop Manual (WSM), Section 206-09.

2. Repair any chafing that may have occurred.

3. Move the harness towards the driver's side of the vehicle and tuck in front of the 14401 harness above the steering column. Use a tie strap to secure in place.

4. Replace the SWR sensor following WSM, Section 206-09.





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

082008A 2007-2008 Expedition, 0.7 Hr.
Navigator: Replace The
Steering Wheel Rotation
Sensor, Includes Time To
Reposition Harness, Check
DTCs, Repair Wires If
Required, And Calibrate
New Sensor. (Do Not Use
With 12650D, 14200A)

DEALER CODING
CONDITION
BASIC PART NO. CODE
14401 12





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