PINPOINT TEST E : U210A:11 or U210A:15: Notes

Diagnostic Overview

U210A:11 or U210A:15

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.

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Conditions
U210A:11	Temperature Sensor: Circuit Short to Ground	This DTC will only set when the heated steering wheel is commanded on. The module reads a resistance value less than 627 ohms on the heating element temperature sensor input circuit for greater than 640ms, indicating a short to ground. The steering wheel heating element output will be disabled until the ignition is cycled.
U210A:15	Temperature Sensor: Circuit Short to Battery or Open	This DTC will only set when the heated steering wheel is commanded on. The module reads a resistance value greater than 670, 000 ohms on the heating element temperature sensor reference circuit for greater than 10 minutes, indicating a short to voltage or an open circuit or heating element temperature sensor. The steering wheel heating element output will be disabled until the ignition is cycled.