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Pinpoint Test G : The Heated Steering Wheel Does Not Operate/Does Not Operate Correctly: Notes

Refer to Adjustable Steering Column for schematic and connector information.

Normal Operation 

When steering wheel heat is requested, the heated steering wheel temperature is maintained by the HSWM using a sensor in the steering wheel (integral to the steering wheel). The resistance of the sensor rises as the temperature falls and the resistance falls as the temperature rises. The resistance can vary from 3, 384 ohms at 50 °C (122 °F) to 34, 699 ohms at 0 °C (32 °F). The HSWM supplies a reference voltage and ground to the temperature sensor and monitors the voltage drop from the temperature sensor for controlling current flow to the heating element. The HSWM is designed to remain on, heating the steering wheel and maintaining temperature until switched OFF on the FDIM or the ignition is turned OFF.

NOTE: On all vehicles, slow heating between the 10 o'clock and 2 o'clock steering wheel hand positions is considered normal. On vehicles equipped with wood inserts in the steering wheel, there is no heating elements located under the inserts.

Possible Sources: 

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