C1261 Steering Angle Sensor Not Calibrated - Automotive Repair Guides & Equipment

COMPONENT LOCATION

GENERAL DESCRIPTION

EPS CM controls EPS solenoid current accurately according to vehicle speed. EPS CM monitors that operating voltage supplied as IG S/W is too high or too low on “power supply terminal”. If excessive high voltage or low voltage is detected, EPS CM stops current supply to solenoid to prevent unexpected operation or damage.

DTC DESCRIPTION

EPS CM sets this code if ASP(Absolute Steering Position) zero setting is not done when EPS CM losses steering angle signal due to EPS alignment replace etc. EPS CM stops “damper” and “return” control due to loss of steering angle signal.

DTC DETECTING CONDITION

Item

Detecting Condition

Possible cause

DTC Strategy

ASP Setting Flag Check

ASP setting is not done

Enable conditions

Engine On

Threshold value

ASP Setting Flag ≠ 1

Fail Safe

Steering angle sensor signal is not available.

Restoration conditions

ASP Setting is done well

MONITOR SCANTOOL DATA

■ Steering angle calibration

Perform steering angle sensor calibration.

(1)	Ignition “ON” & Engine “OFF”.

(2)	Set the steering wheel so that the wheels point straight ahead

(3)	Connect scantool to Data Link Connector(DLC).

(4)	Perform steering angle sensor calibration. (figure 1).

(5)	Go to “Component Inspection” Procedure.

(6)

Are any DTCs present ?

	▶ Substitute with a known-good steering column & EPS unit assembly check for proper operation. If problem is corrected, replace steering column & EPS unit assembly.
	▶ Fault is intermittent caused by faulty EPS CM or was repaired and EPS CM memory was not cleared

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