Electronics involved !
The climate control seat system is able to heat and cool the front seats. Each climate controlled seat is operated by push-buttons on the dual automatic temperature controller (EATC) located on the instrument panel. Each front seat temperature is then monitored and controlled by the dual climate control seat module (dual CCSM) located underneath the passenger front seat cushion.
Both the driver and front passenger climate controlled seats are independently controlled electronically by the dual climate controlled seat module (CCSM) mounted to the bottom of the passenger seat cushion. The climate controlled seat system only operates with the engine running, however, if using a diagnostic tool to command the dual CCSM, diagnostic testing can be carried out with the ignition switch key ON engine OFF (KOEO). The system receives power from central junction box (CJB) fuse 118 (30A) through circuit 1153 (RD/BK) feeding battery voltage into dual CCSM C3265b pins 1 and 24. If power is disconnected from either pin 1 or 24 of dual CCSM C3265b, only 1 seat will be disabled (pin 1 for driver seat, pin 24 for passenger seat), the other will remain operational. Since both climate controlled seats operate independently, if a fault occurs setting a DTC specific to either climate controlled seat, only the affected seat will be disabled by the module and the other will remain operational.
Sorry , but it would be best for you to take it to the dealer or someother qualified repair shop.
DTC Description Retrieved Action
B1111 Driver Thermal Electric Device Control Over-temperature Fault Continuous If DTC B2729, B272A, B272B or B2930 is also present, Go To Pinpoint Test S and diagnose that concern first. Otherwise, Go To Pinpoint Test T .
B1112 Driver Thermal Electric Device Control Shorted Fault Continuous If DTC B2729, B272A, B272B or B2930 is also present, Go To Pinpoint Test S and diagnose that concern first. Otherwise, Go To Pinpoint Test T .
Pinpoint Test S: DTC B2729/B272A — Cushion Over-Temp Detected (Driver/Passenger); DTC B2730/B272B — Back Over-Temp Detected (Driver/Passenger); DTC B272C/B272D — Differential Temperature Fault (Driver/Passenger)
Normal Operation
Each thermo-electric device (TED) contains an internal temperature sensor (thermistor) that is used by the dual climate controlled seat module (dual CCSM) to monitor the temperature of each TED. Based on the temperature of a TED, the internal sensor resistance will vary the voltage on circuit 1548 (DG/LG) (seat cushion TED) and circuit 1549 (DB/OG) (backrest TED).
Possible Causes
An over-temp or differential temperature fault can be caused by:
wiring, terminals or connectors.
damaged, restricted or disconnected air ducts.
worn, damaged or incorrectly installed foam wedge, cushion foam or seat cushion trim cover.
airflow leaks.
collapsed airflow channels in the seat cushion foam.
incorrect installation of a TED.
TED.
dual CCSM.
PINPOINT TEST S: DTC B2729/B272A — CUSHION OVER-TEMP DETECTED (DRIVER/PASSENGER); DTC B2730/B272B — BACK OVER-TEMP DETECTED (DRIVER/PASSENGER); DTC B272C/B272D — DIFFERENTIAL TEMPERATURE FAULT (DRIVER/PASSENGER)
NOTE: The presence of over-temperature faults (DTCs B2729, B272A, B272B and B2730) can be induced by incorrect operation of the climate controlled seat system after an initial HEAT setting has been attained. If a HEAT setting is repeatedly turned OFF and ON in an attempt to increase the seat temperature, an over-temperature condition can result and the DTC(s) will be set.
×
SOURCE: lincoln blackwood climate control
have had my drive seat fixed 3 times and is being repair as we speak for the fourth. Passenger side I had repaired once and it is out now also. I love my Navie, but the seat accessories are junk. I too, have a 2000. If you can bear with me for about a week, I will know why these are not working and will be able to follow up with you about yours first hand instead of guessing. Fair enough?
SOURCE: heated seats 1999 lincoln navigator
the fuse is #110, it is in the power distribution box under the hood, it also runs the moon roof, so if the moon roof works the fuse is good, if this is the case the heated seat switch is the likely cause and by far the most common..
SOURCE: Mounting third row seat in 2008 Suburban 1FL, LS 1500 - Fleet veh
I drive a 2008 Suburban LT and my company has a true work "fleet" suburban. The only difference between these two that I have is the back of the fleet vehicle has a thick rubber mat in the back with no seats. After removing the black mat I found that the channels and rods that the rear seats clip into are present. The third row seats are installed by clipping them in no bolts or tools are required.
SOURCE: 1999 Lincoln Navigator stops blowing hot air
Since your blower is working and it is a heat issue,thats where we'll
start,First thing is have you checked the coolant level in the radiator when
engine is cold,make sure it is filled to top,next verify you have coolant in
reserve ,Start your van and get it up to normal operation temperature,If your
heat gauge on the dash works correctly it should be 190 degrees,Now lift the
hood and locate the two heater hoses going into the heater assembly at the fire
wall,Both hoses should be hot to hold on to,if both are hot and no heat inside
your problem will be the blend air door in heater assembly.
if neither hose
is that hot you need to replace the thermostat in the engine to get it up to 195
degrees.
if one hose is hot and one is luke warm then the heater core is
blocked and to blame. hope this helps you.
SOURCE: 2003 Lincoln Navigator Heated Seat Problem
Can only Diagnose with a scanner and a trouble chart. It's all electronic
765 views
Usually answered in minutes!
×