Navigator 2WD V8-5.4L (2007)
Electronic Brake Control Module: All Technical Service Bulletins
ABS/TCS - Sliding Car Icon ON/Flashing/DTC C1996 Set
TSB 08-14-2
07/21/08
STABILITY/TRACTION CONTROL INDICATOR -
SLIDING-CAR ICON-ON OR FLASHING - DTC C1996
OR SENSITIVE ESC/RSC ACTIVATION NO CODES
FORD:
2007-2008 Expedition
LINCOLN:
2007-2008 Navigator
ISSUE
Some 2007-2008 Expedition and Navigator vehicles equipped with electronic stability control (ESC)/roll stability control (RSC) may exhibit the
stability/traction control indicator "sliding-car icon" on or flashing with diagnostic trouble code (DTC) C1996 or sensitive ESC/RSC activation with no
codes.
ACTION
Follow the Service Procedure steps to correct the condition.
SERVICE EVALUATION PROCEDURE
Determine if this procedure applies by answering the following questions:
1.
Was the customer pulling a trailer when the concern occurred?
a.
No, go to question 2.
b.
Yes, do not proceed with this procedure. Vehicles pulling heavy trailers have the possibility to have a sensitive activation or DTC C1996.
This is a normal characteristic and no corrective action needed.
2.
Was the stability/traction control indicator "sliding-car icon" on or flashing during the concern?
a.
No, do not proceed with this procedure and refer to normal workshop manual diagnostics.
b.
Yes, proceed to question 3.
3.
Did the concern occur during acceleration?
a.
Yes, proceed to question 4.
b.
If no, go to question 5.
4.
Test drive the vehicle on curves and/or bumpy roads. Monitor all four wheel speed sensors.
^
Left Front Wheel Speed Sensor (LF_WSPD).
^
Right Front Wheel Speed Sensor (RL_WSPD).
^
Left Rear Wheel Speed Sensor (LR_WSPD).
^
Right Rear Wheel Speed Sensor (RR_WSPD).
^
Are the values similar +/- 6 MPH (10 Km/h)?
a.
No, they vary, proceed to Diagnostic Service Procedure Step 5.
b.
Yes, go to question 5.
5.
Has this concern occurred more than once?
