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Home >> Ford >> 2012 >> Mustang Base, 2D Coupe, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 259 (Seat System - Seats) >> Diagnosis And Testing >> Seating >> Pinpoint Tests >> Pinpoint Test O: The Heated Seat is Inoperative - Front Passenger >> Normal Operation

Normal Operation

WARNING: This page is about a different car, the 2013 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.

The engine must be running for the heated seat system to operate. The driver and passenger heated seat buttons are selected from the touchscreen interface, which initiates the CAN communication to request heated seat operation. Upon receiving the request, the HVAC module supplies voltage to the appropriate driver and/or passenger seat cushion and backrest heater mats, which are connected in series. Temperature is maintained by the HVAC module using a sensor contained within the cushion heater mat. The HVAC module supplies a reference voltage to the temperature sensor and monitors the return signal from the temperature sensor for controlling current flow to the heater mats. The HVAC module remains on, heating the seat and maintaining temperature until commanded off from the touchscreen (or until the ignition is turned OFF).

DTC FAULT TRIGGER CONDITIONS

DTC Description Fault Trigger Conditions
  • B1036:11 - Right Front Seat Heater Element: Circuit Short To Ground
 Sets when the HVAC module senses the right front heater element current draw has exceeded a specified threshold. When this DTC sets, the HVAC module disables the circuit until the ignition is cycled.
  • B1036:13 - Right Front Seat Heater Element: Circuit Open
 Sets when the HVAC module senses the right front heater element current draw is less than a specified threshold. When this DTC sets, the HVAC module disables the circuit until the ignition is cycled.
  • B103A:11 - Right Front Seat Heater Sensor: Circuit Short To Ground
 Sets when the HVAC module senses the right front heater sensor voltage is out-of-range low. When this DTC sets, the HVAC module disables the circuit until the ignition is cycled.
  • B103A:12 - Right Front Seat Heater Sensor: Circuit Short To Battery
 Sets when the HVAC module senses the right front heater sensor voltage is out-of-range high. When this DTC sets, the HVAC module disables the circuit until the ignition is cycled.

This pinpoint test is intended to diagnose the following: 

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