C1528

POWER ASSIST SYSTEMS: POWER STEERING SYSTEM: C1528; Motor Rotation Angle Sensor Malfunction; 2013 MY FR-S [03/2012 -]
C1528 - Motor Rotation Angle Sensor Malfunction

DESCRIPTION

The rotation angle sensor detects the motor rotation angle and sends this information to the power steering ECU assembly.





WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
If the power steering ECU assembly or steering column assembly is replaced, perform rotation angle sensor initialization and torque sensor zero point calibration Programming and Relearning.

PROCEDURE

1. CHECK CONNECTOR CONNECTION CONDITION (ROTATION ANGLE SENSOR - POWER STEERING ECU ASSEMBLY)

(a) Check the connection condition of the z2 rotation angle sensor connector.









OK:

Rotation angle sensor connector is securely connected to the power steering ECU assembly.

NG -- CONNECT CONNECTOR SECURELY
OK -- Continue to next step.

2. READ VALUE USING TECHSTREAM (MOTOR ROTATION ANGLE)

(a) Turn the ignition switch off.

(b) Connect the Techstream to the DLC3.

(c) Start the engine.

(d) Turn the Techstream on.

(e) Enter the following menus: Chassis / EMPS / Data List.

EMPS





OK:

During steering operation, motor rotation angle value changes from 0 to 360°.

NG -- CHECK STEERING COLUMN ASSEMBLY

OK -- REPLACE POWER STEERING ECU ASSEMBLY Removal

3. CHECK STEERING COLUMN ASSEMBLY

(a) Disconnect the z2 rotation angle sensor connector from the power steering ECU assembly.









(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





NG -- REPLACE STEERING COLUMN ASSEMBLY Removal

OK -- REPLACE POWER STEERING ECU ASSEMBLY Removal