Expedition 4WD V8-5.4L VIN 5 (2006)
11.
With DCCSM C3265B disconnected, check for a short circuit (short to voltage is less than 0.2 volts, short to ground is resistance less than 10,000
ohms) in the wiring from the TED that is not reading the over-temp to the CCSM. If no short circuit is found, then replace the TED. (Figure 5)
12.
Is the resistance on the thermistor circuit at the TED connector (C3034 - driver back, C3035 - Driver Cushion, C3039 - Passenger Back, or C3040
- Passenger Cushion) between 2.7 K ohms (proper value @ 65° F) (18° C) to 1.86 K ohms (proper value @ 80° F) (27° C) at ambient (room
temperature)?
a.
If no, then replace the TED that is outside the resistance range specified above, assuming the TED is at room temperature, and proceed to
Step 12.
b.
If yes, then proceed to Step 13.
13.
If CCS continues to be inoperable with a B272C/D code and:
a.
Time to failure is different than before, then start new diagnosis from Step 4 Section 1.
b.
Time to failure is not different than before, then continue to Step 14.
c.
If CCS is now operable, then repower the SRS and finish other repairs as needed and return vehicle to customer.
