Normal Operation

The Dual Climate Controlled Seat Module (DCSM) supplies voltage and ground to the passenger seat cushion Thermo-Electric Device (TED). The DCSM also sends a speed control voltage signal to the TED to control blower speed.

• DTC B19A1 (Passenger Seat Cushion Blower Speed Short to Battery) - If the passenger seat cushion blower speed circuit is shorted to voltage, the DCSM will shut down the passenger seat system and set this DTC.

This pinpoint test is intended to diagnose the following: 

• Wiring, terminals or connectors
• TED and blower assembly
• DCSM