PINPOINT TEST AH : DTCs B103B AND B1111: Notes

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

Normal Operation 

The Dual Climate Controlled Seat Module(DCSM) monitors the Thermo-Electric Device(TED) circuits. If a short to ground or voltage on any of these circuits is detected, the DTC(s) will be set.

• DTC B103B (Thermo-Electric Driver Overcurrent Low) -- If DCSM outputs to the driver seat backrest or cushion TED (circuit pins G, H, J or K at the DCSM connector) or any components within these circuit loops are shorted to ground or a TED resistance of less than 0.9 ohm is sensed, the DCSM will shut down the driver seat system and set this DTC.
• DTC B1111 (Driver Thermo-Electric Device Control Overtemperature Fault) -- If the DCSMTED driver integrated circuit temperature exceeds 175 deg.C (347 deg.F), 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 assembly
• DCSM