Navigator 2WD V8-5.4L (2007)
Seat Heater Control Module: All Technical Service Bulletins
A/C - Climate Control Seats Inoperative
TSB 07-21-6
10/29/07
CLIMATE CONTROL SEAT FUNCTION
INOPERATIVE - NO COMMUNICATION - DCSM -
VEHICLES BUILT PRIOR TO 8/31/2007
FORD:
2007-2008 Expedition
LINCOLN:
2006 Zephyr
2007-2008 KZ, Navigator
ISSUE
Some 2007-2008 Expedition and Navigator, 2006 Zephyr and 2007-2008 MKZ vehicles built before 8/31/2007 and equipped with climate control seats
may exhibit inoperative heating and/or cooling. There are no diagnostic trouble codes (DTCs) associated with this issue and IDS/PDS will not
communicate with the dual climate control seat module (DCSM).
ACTION
Follow the Service Procedure steps to correct the condition.
SERVICE PROCEDURE
1.
Turn the ignition switch to key on engine off (KOEO) position.
2.
Run self test on DCSM.
a.
If DTCs are present do not continue with this TSB, follow normal Workshop Manual (WSM) diagnostics for the DTCs.
b.
If no communication with the DCSM, proceed to Step 3.
3.
Remove power to the DCSM and wait a minimum of 2 minutes. This will reset the DCSM.
^
Expedition/Navigator - remove Fuse 8 in the battery junction box (BJB).
^
Zephyr/MKZ - remove Fuse 11 and 12 in the BJB.
4.
Reinstall the fuse(s) and recheck for communication.
a.
If communication does not return, refer to WSM, Section 418-00.
b.
If the communication is restored by resetting:
(1)
Expedition/Navigator/2008 MKZ - reprogram the DCSM to the latest calibration using IDS release 51.4 or later with patch 7.
Calibration files may also be obtained at the website.
(2)
2006 Zephyr/2007 MKZ - replace the DCSM.
5.
Recheck operation of the heated/cooled seat and for DTCs. If no DTCs return the vehicle to the customer.
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
