Test T: DTC B1111 Or B1113: Driver Or Passenger Thermal-Electric Device Control Over-temperature Fault; DTC B1112 Or B1114: Dri

PINPOINT TEST T: DTC B1111 OR B1113: DRIVER OR PASSENGER THERMAL-ELECTRIC DEVICE CONTROL OVER-TEMPERATURE FAULT; DTC B1112 OR B1114: DRIVER OR PASSENGER THERMAL-ELECTRIC DEVICE CONTROL SHORTED FAULT

T1:

T1-T2:

T2-T3:

T3-T4:

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.