Normal Operation
WARNING: This page is about a different car, the 2010 Mercury Milan, 2010 Lincoln MKZ, and 2010 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
The Dual Climate Controlled Seat Module (DCSM) supplies a speed control signal voltage to the driver seat backrest Thermo-Electric Device (TED) on circuit VHS16 (BU/GN). The TED blower is supplied operating voltage from DCSM output circuit CHS03 (GN/BN) and ground from DCSM output circuit RHS03 (GY/OG).
- DTC B19A4 (Driver Seat Back Blower Speed Short to Battery) - If the driver seat backrest blower speed circuit is shorted to voltage, the DCSM will shut down the driver seat system and set this DTC.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- TED and blower assembly
- DCSM