PINPOINT TEST G : The Heated Steering Wheel Does Not Operate/Does Not Operate Correctly: Notes

Diagnostic Overview

The Heated Steering Wheel Does Not Operate/Does Not Operate Correctly

Refer to Adjustable Steering Column for schematic and connector information.

Normal Operation and Fault Conditions

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.

When steering wheel heat is requested, the heated steering wheel temperature is maintained by the Heated Steering Wheel Module (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 Heated Steering Wheel Module (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 Heated Steering Wheel Module (HSWM) heats the steering wheel until switched off on the FDIM or the ignition is turned OFF.

Possible Sources

Fuse
Wiring, terminals or connectors
Clockspring
Steering wheel
Heated Steering Wheel Module (HSWM)
SCCM