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Pinpoint Test O : The Left Heated Seat Is Inoperative -- With Heated/Ventilated Seats: Notes

WARNING: This page is about a different car, the 2020 Ford F-150. 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 and Fault Conditions 

REFER to: Front Seats - System Operation and Component Description .

DTC Fault Trigger Conditions 

DTC Description Fault Trigger Conditions
B1153:4B Driver Seat Cushion: Over Temperature Sets when the SCME senses the left front cushion temperature has exceeded 110 deg.C (230 deg.F) for more than 4 seconds. When this DTC sets, the SCME disables the circuit until the ignition is cycled.
B1156:01 Driver Seat: General Electrical Failure Sets when the SCME senses the left front heater element current draw has exceeded a specified threshold. When this DTC sets, the SCME disables the circuit until the ignition is cycled.
B1156:11 Driver Seat: Circuit Short To Ground Sets when the SCME senses the left front heater element current draw has exceeded a specified threshold. When this DTC sets, the SCME disables the circuit until the ignition is cycled.
B1156:12 Driver Seat: Circuit Short To Battery Sets when the SCME senses the left front heater circuit voltage is above a specified threshold when the driver is active. When this DTC sets, the SCME disables the circuit until the ignition is cycled.
B1156:13 Driver Seat: Circuit Open Sets when the SCME senses the left front heater element current draw is less than a specified threshold. When this DTC sets, the SCME disables the circuit until the ignition is cycled.
B1156:1A Driver Seat: Circuit Resistance Below Threshold Sets when the SCME senses the left front heater element current draw is more than a specified threshold. When this DTC sets, the SCME disables the circuit until the ignition is cycled.
B1208:01 Driver Seat Cushion Temperature Sensor: General Electrical Failure Sets when the SCME senses the left front heater sensor voltage is out-of-range low or high. When this DTC sets, the SCME disables the circuit until the ignition is cycled.
B1208:11 Driver Seat Cushion Temperature Sensor: Circuit Short To Ground Sets when the SCME senses the left front heater sensor voltage is out-of-range low. When this DTC sets, the SCME disables the circuit until the ignition is cycled.
B1208:15 Driver Seat Cushion Temperature Sensor: Circuit Short To Battery or Open Sets when the SCME senses the left front heater sensor voltage is out-of-range high. When this DTC sets, the SCME disables the circuit until the ignition is cycled.

Possible Causes 

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