Test K: Temperature Imbalance Between Seat Cushion & Backrest

WARNING: This page is about a different car, the 2002 Lincoln Blackwood. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Vehicle is equipped with seatback-mounted air bags. Deactivate air bag system before performing any service operation involving seat components. See AIR BAG RESTRAINT SYSTEMS article in RESTRAINTS.

CAUTION: Air Bag Simulator (40-009) MUST be connected to all air bag floor harness connectors. After diagnosis/repair, air bag simulator must be removed prior to operating vehicle.

Inspect seat cushion Thermo-Electric Device (TED) exhaust nozzle for air exhausting. Compare with airflow from opposite seat. If airflow is not comparable, go to next step. If airflow is comparable, go to step 4.
Inspect seat for damaged or disconnected air ducts. If air ducts are not damaged or disconnected, go to next step. If air ducts are damaged or disconnected, replace or repair air ducts as necessary.
Inspect seat cushion for correct installation of TED. If TED is installed correctly, remove seat cushion trim cover and inspect for worn, damaged components. If any damage is found, repair or replace as necessary. If TED is not installed correctly, install seat cushion TED correctly.
Inspect seat backrest TED exhaust nozzle for air exhausting. Compare with airflow from opposite seat. If airflow is not comparable, go to next step. If airflow is comparable, go to step 7.
Remove back panel of seat backrest trim cover. Inspect backrest for damaged or disconnected air ducts. If air ducts are not damaged or disconnected, go to next step. If air ducts are damaged or disconnected, replace or repair air ducts as necessary.
Inspect seat backrest for correct installation of TED. If TED is installed correctly, remove seat cushion trim cover and inspect for worn, damaged components. If any damage is found, repair or replace as necessary. If TED is not installed correctly, install seat backrest TED correctly. See SEAT BACK THERMO-ELECTRIC DEVICE (TED) under REMOVAL & INSTALLATION.
Disconnect appropriate seat cushion TED and seat backrest TED harness connectors. Measure resistance between terminals No. 2 (Black/Light Blue wire) and No. 3 (Dark Green/Light Green wire) component side at seat cushion TED. Measure resistance between terminals No. 2 (Red/Light Blue wire) and No. 3 (Dark Blue/Orange wire) component side at seat backrest TED. Compare resistance measurements for both seat cushion and backrest thermistors. See AMBIENT TEMPERATURE RESISTANCE table. See Figure. If thermistor readings are within specification for temperature range, replace appropriate seat cushion TED. See SEAT CUSHION THERMO-ELECTRIC DEVICE (TED) under REMOVAL & INSTALLATION. If thermistor readings are not within specification for temperature range, replace appropriate seat backrest TED. See SEAT BACK THERMO-ELECTRIC DEVICE (TED) under REMOVAL & INSTALLATION.