Programming and Relearning
POWER ASSIST SYSTEMS: POWER STEERING SYSTEM: CALIBRATION; 2013 MY FR-S [03/2012 -]
1. ROTATION ANGLE SENSOR INITIALIZATION AND TORQUE SENSOR ZERO POINT CALIBRATION
NOTICE:
Initialize the rotation angle sensor and calibrate the torque sensor zero point if any of the following conditions occur:
* The power steering ECU is replaced.
* The steering column assembly is replaced.
* Steering effort differs between turning left and right.
HINT
When rotation angle sensor initialization and torque sensor zero point calibration are performed, the assist map writing, the rotation angle sensor value initialization and the torque sensor zero point calibration are performed at the same time.
(a) Inspection before calibration
(1) Turn the ignition switch off.
(2) Connect the Techstream to the DLC3.
(3) Turn the ignition switch to ON.
(4) Turn the Techstream on.
(5) Enter the following menus: Chassis / EMPS / Data List.
(6) Check the values by referring to the table below.
EMPS
Standard voltage:
10 V or more
NOTICE:
If the IG power supply voltage is 9 V or less, calibration cannot be performed. In this case, charge or replace the battery, and then perform calibration.
(b) Rotation angle sensor initialization and torque sensor zero point calibration
NOTICE:
* If DTC C1516 (Torque Sensor Zero Point Adjustment Incomplete) is stored, the torque sensor zero point cannot be calibrated. Clear the DTC before starting calibration.
* If DTC C1526 (Rotation Angle Sensor Initialization Incomplete) is stored, the rotation angle sensor cannot be initialized. Clear the DTC before starting initialization.
(1) Turn the ignition switch off.
(2) Connect the Techstream to the DLC3.
(3) Turn the ignition switch to ON.
(4) Turn the Techstream on.
(5) Enter the following menus: Chassis / EMPS / Utility / Torque Sensor Adjustment.
(6) According to the display on the Techstream, perform calibration.
NOTICE:
* Set the steering wheel to the center point and align the front tires straight ahead.
* Do not turn the steering wheel sharply.
* Do not touch the steering wheel during the rotation angle sensor initialization and torque sensor zero point calibration (for 3 seconds).