Pinpoint Test AJ: DTC B19A3: Notes

Refer to Climate Controlled Seats for schematic and connector information.

Normal Operation 

The DCSM supplies a speed control signal voltage to the driver seat cushion TED on circuit RHS03 (GY/OG). The TED blower is supplied operating voltage from DCSM output circuit CHS13 (VT/BN) and ground from DCSM output circuit CHS03 (GN/BN).

• DTC B19A3 (Driver Seat Cushion Blower Speed Short to Battery) - If the driver seat cushion 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