Component Location
General Description

The Steering angle sensor(SAS) is installed in MDPS (Motor Driven Power Steering) and it sends messages to HECU through CAN communication line.

The SAS is used to determine turning direction and speed of the steering wheel.

The HECU uses the signals from the SAS when performing ESP-related calculations.

DTC Description

The SAS used for ESP control needs 0 set because the SAS measures a absolute angle.

0 set is done by using the scantool device. If abnormal 0 set is detected or no information in SAS is detected, a failure is reconized.

DTC Detecting Condition

Item

Detecting Condition

Possible cause

DTC Strategy

● Signal Monitoring

● A fail of SAS 0 set

Monitoring Period

● During SAS 0 set.

Enable Conditions

● The position of steering wheel is out of specified range (straight positon, a max. error ±5˚) during SAS 0 setting.

● When SAS is not calibrated.

Fail Safe

● Reduced controller function caused by faulty SAS signal. Allow the ABS/EBD control.

● The ESP warning lamp is activated.

Schematic Diagram
note
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