Normal Operation
WARNING: This page is about a different car, the 2013 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
The Dual Climate Controlled Seat Module (DCSM) supplies voltage and ground to the driver seat cushion Thermo-Electric Device (TED). The DCSM also sends a speed control voltage signal to the TED to control blower speed.
- DTC B19A7 (Driver Seat Cushion Blower Speed Short to Ground) - If the driver seat cushion blower speed circuit is shorted to ground, 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
- TED and blower assembly
- DCSM