C1513

POWER ASSIST SYSTEMS: POWER STEERING SYSTEM: C1511-C1514, C1517; Torque Sensor Circuit Malfunction; 2013 MY FR-S [03/2012 -]
C1511 - Torque Sensor Circuit Malfunction
C1512 - Torque Sensor Circuit Malfunction
C1513 - Torque Sensor Circuit Malfunction
C1514 - Torque Sensor Power Supply Abnormal
C1517 - Torque Hold Abnormal

DESCRIPTION

The torque sensor converts the rotation torque input to the steering wheel into an electrical signal and sends it to the power steering ECU assembly. Based on this signal, the ECU detects steering effort.





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 (TORQUE SENSOR - POWER STEERING ECU ASSEMBLY)

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









OK:

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

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

2. CHECK POWER STEERING ECU ASSEMBLY (TRQV VOLTAGE)

(a) Turn the ignition switch off.

(b) Turn the ignition switch to ON.

(c) Measure the voltage according to the value(s) in the table below.









Standard Voltage:





HINT
When the value is within the specified range, record the value.

NG -- REPLACE POWER STEERING ECU ASSEMBLY Removal
OK -- Continue to next step.

3. CHECK POWER STEERING ECU ASSEMBLY (TRQ1, TRQ2 VOLTAGE)

(a) Start the engine.









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

Standard Voltage:





(c) Calculate the difference between the value recorded when measuring the voltage at terminal TRQV in the previous step, and the sum of the output of torque sensor 1 and torque sensor 2.

OK:

0.3 V or less (Absolute value)

NG -- REPLACE STEERING COLUMN ASSEMBLY Removal

OK -- REPLACE POWER STEERING ECU ASSEMBLY Removal