DTC    C1511/11    Torque Sensor 1 Malfunction

DTC    C1512/12    Torque Sensor Circuit Malfunction

DTC    C1513/13    Torque Sensor Circuit Malfunction

DTC    C1514/14    Torque Sensor Power Source Circuit Malfunction

DTC    C1517/17    Torque Sensor Hold Malfunction


DESCRIPTION

The torque sensor converts the rotation torque input from the steering wheel into electric signals and sends them to the power steering ECU.

DTC No.
Detection Item
Trouble Area
C1511/11
Torque sensor (TRQ1) signal error or stop
  1. Torque sensor (built into steering column assembly)
  1. Power steering ECU
C1512/12
Torque sensor (TRQ2) signal error or stop
C1513/13
Deviation between torque sensor TRQ1 and TRQ2 exceeds specified value
C1514/14
Torque sensor power source voltage error
C1517/17
Temporary control due to malfunction related to torque sensor continues for long time

WIRING DIAGRAM


F044868E04


INSPECTION PROCEDURE

1.READ VALUE USING TECHSTREAM
  1. Connect a Techstream to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the Techstream on.

  1. Enter the following menus: Chassis / EMPS / Data List.

  1. Select the items "Torque Sensor 1 Output" and "Torque Sensor 2 Output" in the Data List and read the value displayed on the Techstream.


EMPS: 
Tester Display
Measurement Item/Range
Normal Condition
Diagnostic Note
Torque Sensor 1 Output
Torque sensor 1 voltage:
Minimum: 0.0000 V, Maximum: 5.0000 V
2.3 to 2.7 V: Steering wheel not turned (without load)
Read value with vehicle stopped
2.5 to 4.7 V: Steering wheel turned to right
Read value with vehicle stopped
0.3 to 2.5 V: Steering wheel turned to left
Read value with vehicle stopped
Torque Sensor 2 Output
Torque sensor 2 voltage:
Minimum: 0.0000 V, Maximum: 5.0000 V
2.3 to 2.7 V: Steering wheel not turned (without load)
Read value with vehicle stopped
2.5 to 4.7 V: Steering wheel turned to right
Read value with vehicle stopped
0.3 to 2.5 V: Steering wheel turned to left
Read value with vehicle stopped
  1. Check the difference in the values between "Torque Sensor 1 Output" and "Torque Sensor 2 Output".

OK:
The voltage difference is below 0.3 V.


OK
CHECK INTERMITTENT PROBLEMS (Click here)
NG


2.INSPECT POWER STEERING ECU (OUTPUT)
F046432E01
  1. Turn the ignition switch to ON.

  1. Measure the voltage.

    Standard voltage:
    Tester Connection
    Condition
    Specified condition
    TRQV (c1-6) - TRQG (c1-8)
    Ignition switch on
    7.5 to 8.5 V


NG
REPLACE POWER STEERING ECU (Click here)
OK


3.INSPECT STEERING COLUMN ASSEMBLY (TORQUE SENSOR)
F046432E02
  1. Turn the ignition switch to ON.

  1. Measure the voltage.

    Standard voltage:
    Tester Connection
    Condition (Steering Position)
    Specified Condition
    TRQ1 (c1-5) - TRQG (c1-8)
    Center position
    2.3 to 2.7 V
    TRQ2 (c1-7) - TRQG (c1-8)
    Center position
    2.3 to 2.7 V
    TRQ1 (c1-5) - TRQG (c1-8)
    Turned to right
    2.5 to 4.7 V
    TRQ2 (c1-7) - TRQG (c1-8)
    Turned to right
    2.5 to 4.7 V
    TRQ1 (c1-5) - TRQG (c1-8)
    Turned to left
    0.3 to 2.5 V
    TRQ2 (c1-7) - TRQG (c1-8)
    Turned to left
    0.3 to 2.5 V


NG
REPLACE STEERING COLUMN ASSEMBLY (Click here)
OK

REPLACE POWER STEERING ECU (Click here)