C1515

POWER ASSIST SYSTEMS: POWER STEERING SYSTEM: C1515, C1525: Torque Sensor Zero Point Adjustment Undone
C1525 - Rotation Angle Sensor Initialization Undone

DESCRIPTION

These DTCs do not indicate a malfunction. The power steering ECU assembly stores these DTCs when it determines that rotation angle sensor value initialization and torque sensor zero point calibration have not been performed.





INSPECTION PROCEDURE

NOTICE:
* If the power steering ECU assembly has been replaced with a new one, perform assist map writing and rotation angle sensor value initialization torque sensor zero point calibration after performing the initialization of the torque sensor zero point value Programming and Relearning.
* If the steering column assembly has been replaced with a new one, perform rotation angle sensor value initialization torque sensor zero point calibration after performing the initialization of the torque sensor zero point value Programming and Relearning.

PROCEDURE

1. CHECK FOR DTC

(a) Initialize the rotation angle sensor value and calibrate the torque sensor zero point (step 1) Programming and Relearning.

(b) Check for DTCs (step 2) Reading and Clearing Diagnostic Trouble Codes.

HINT
If DTCs are output, perform steps 1 and 2 two more times.

Result:





B -- END
A -- Continue to next step.

2. REPLACE POWER STEERING ECU ASSEMBLY

(a) Replace the power steering ECU assembly Removal.

NEXT -- Continue to next step.

3. CHECK FOR DTC

(a) Initialize the rotation angle sensor value and calibrate the torque sensor zero point (step 1) Programming and Relearning.

(b) Check for DTCs (step 2) Reading and Clearing Diagnostic Trouble Codes.

HINT
If DTCs are output, perform steps 1 and 2 two more times.

Result:





B -- END

A -- REPLACE STEERING COLUMN ASSEMBLY Removal