DTC C1515 Torque Sensor Zero Point Adjustment Undone

DTC C1525 Rotation Angle Sensor Initialization Undone

DESCRIPTION

These DTCs do not indicate a malfunction. The power steering ECU assembly outputs these DTCs when it determines that rotation angle sensor value initialization and torque sensor zero point calibration have not been performed. When IG terminal voltage is 9 V or less, rotation angle sensor initialization and torque sensor zero point calibration cannot be performed.

DTC No.	DTC Detection Condition	Procedure
C1515	This DTC is detected when torque sensor zero point calibration has not been performed.	There is no malfunction if this DTC is not output again after performing zero point calibration.
C1525	This DTC is detected when rotation angle sensor value initialization has not been performed.	There is no malfunction if this DTC is not output again after performing rotation angle sensor value initialization.

INSPECTION PROCEDURE

1.INITIALIZE ROTATION ANGLE SENSOR AND CALIBRATE TORQUE SENSOR ZERO POINT

Initialize the rotation angle sensor and calibrate the torque sensor zero point .

NEXT

2.RECONFIRM DTC

Check for DTCs.

Result:

Result	Proceed to
DTCs are still output after performing rotation angle sensor value initialization and steering zero point calibration 3 times.	A
DTCs are still output after performing rotation angle sensor value initialization and steering zero point calibration once or twice.	B
Normal system code is output.	C

HINT:

Replace the power steering ECU assembly if DTCs are still output after performing rotation angle sensor value initialization and steering zero point calibration 3 times.

B

Go to step 1

C

Go to step 4

C

END

A

REPLACE POWER STEERING GEAR ASSEMBLY

LEXUS IS250, IS220d / GSE20 ALE20

POWER STEERING

Lexus IS250 IS220d GSE20 ALE20

ELECTRONIC POWER STEERING SYSTEM