Expedition 4WD V8-5.4L VIN 5 (2006)
16.
Check if the seat back/cushions are damaged or the scrim (Figures 8 and 9) has been obstructed or damaged or bunched in the cushion blocking air
flow from the TED.
a.
If the cushion or scrim is damaged or bunched or is incorrect, then repair or replace the damaged cushion/scrim and continue to Step 17.
b.
If the cushion or scrim is not damaged or bunched and is correct for a climate control seat, then replace the TED and continue to Step 17.
17.
If CCS continues to be inoperable with DTC B272C/D code, start a new diagnosis from Step 3 in Section 1 of this TSB. If CCS in now operable,
repower the SRS, and return vehicle to customer.
Section 4
SECTION 4 (Seat Shuts Off After More Than 40 Seconds)
1.
Check the temperature PIDS with a generic scan tool (GST) from the two TEDs on the affected seat when a heating cycle is initiated.
a.
If a TED does not increase more than 1 or 2 degrees, then proceed to Step 2.
b.
If the TEDs both increase temperature, then proceed to Step 3.
2.
Let the TEDs sit with no heating or cooling cycle for 5 minutes. Check the resistance of the TED that does not increase temperature from Step 1.
a.
If the resistance of the TED is around 2.5 ohms +/- 10 ohms at room temperature, then proceed to Step 3.
b.
If the resistance of the TED is 0 or hundreds of ohms at room temperature then replace the TED, verify the fix and proceed to Step 6.
3.
Check for any kinks or obstructions of the ducting from the fan to the TED.
a.
If there are kinks, then replace the ducting, if there is an obstruction, then remove if possible otherwise replace the ducting and continue to
Step 4.
b.
If there are no kinks or obstructions of the ducting, then continue to Step 5.
4.
If CCS continues to be inoperable with DTC B272C/D code and
