Pinpoint Test Al : DTC B19A5: Notes

WARNING: This page is about a different car, the 2016 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.

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

Normal Operation

The Front Seat Climate Control Module (SCME) supplies a speed control signal voltage to the passenger seat cushion TED on circuit RHS08 (VT/WH). The TED blower is supplied operating voltage from Front Seat Climate Control Module (SCME) output circuit CHS14 (GN) and ground from Front Seat Climate Control Module (SCME) output circuit CHS08 (BN/YE).

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