Pinpoint Test AF : DTC B19A5: Notes

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

Pinpoint Test AF: DTC B19A5

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

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 B19A5 (Passenger Seat Cushion Blower Speed Short to Ground) - If the passenger seat cushion blower speed circuit is shorted to ground, 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