Pinpoint Test Aw : DTC B2730: Notes

WARNING: This page is about a different car, the 2015 Lincoln MKT. However, it is still accessible from the selected car via links, so may be relevant.

Pinpoint Test AW: DTC B2730

Refer to Wiring Diagrams Climate Controlled Seats for schematic and connector information.

Normal Operation

The Dual Climate Controlled Seat Module (DCSM) monitors seat backrest temperature while it supplies voltage and ground to both blower motors. The DCSM also supplies a variable voltage signal to control the blower speed. Cabin air enters the blower through a filter attached to the Thermo-Electric Device (TED) housing. Heated or cooled air exits the TED and flows through a manifold attached to the foam pad.

DTC B2730 (Back Over-Temp Detected) - If the driver seat backrest TED temperature exceeds 70°C (158°F) in cool mode or 85°C (185°F) in heat mode for more than 34 seconds the DCSM shuts down the driver seat system and sets this DTC.

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
Restricted backrest TED filter
Crushed or restricted foam pad
Backrest TED assembly
Dual Climate Controlled Seat Module (DCSM)