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. Based on this signal, the ECU detects steering effort.
DTC No. |
DTC Detection Condition |
Trouble Area |
---|---|---|
C1511 |
Torque sensor (TRQ1) signal error or stop |
|
C1512 |
Torque sensor (TRQ2) signal error or stop |
|
C1513 |
Deviation between torque sensors TRQ1 and TRQ2 exceeds specified value |
|
C1514 |
Torque sensor power source voltage error |
|
C1517 |
Temporary control due to malfunction related to torque sensor continues for long time |
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
If the power steering ECU and steering column assembly have been replaced, perform
the rotation angle sensor initialization and torque sensor zero point calibration
(See page ).
PROCEDURE
1. |
CHECK CONNECTOR CONNECTION CONDITION (TORQUE SENSOR - ECU) |
(a) Check the installation condition of the torque sensor connector.
OK:
Torque sensor connector is securely connected to the power steering ECU.
NG | ![]() |
CONNECT CONNECTOR |
|
2. |
CHECK POWER STEERING ECU (TRQV VOLTAGE) |
(a) Turn the ignition switch to ON.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
z10-6 (TRQV) - z10-8 (TRQG) |
Ignition switch ON |
4.5 to 5.5 V |
*1 |
Component with harness connected (Power Steering ECU) |
NG | ![]() |
REPLACE POWER STEERING ECU |
|
3. |
CHECK POWER STEERING ECU (TRQ1, TRQ2 VOLTAGE) |
(a) Start the engine. |
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
z10-5 (TRQ1) - z10-8 (TRQG) |
The engine running, steering wheel not turned (without load). |
2.3 to 2.7 V |
The engine running, steering wheel turned to right with vehicle stopped. |
2.5 to 3.8 V |
|
The engine running, steering wheel turned to left with vehicle stopped. |
1.2 to 2.5 V |
|
z10-7 (TRQ2) - z10-8 (TRQG) |
The engine running, steering wheel not turned (without load). |
2.3 to 2.7 V |
The engine running, steering wheel turned to right with vehicle stopped. |
1.2 to 2.5 V |
|
The engine running, steering wheel turned to left with vehicle stopped. |
2.5 to 3.8 V |
(c) Under each condition, measure the voltage at terminals TRQ1 and TRQ2, and calculate the sum.
Standard Voltage:
Inspection Item |
Condition |
Specified Condition |
---|---|---|
Sum of voltage between z10-5 (TRQ1) and z10-8 (TRQG) and voltage between z10-7 (TRQ2) and z10-8 (TRQG) |
The engine running, steering wheel not turned (without load). |
Between 4.75 V and 5.25 V |
The engine running, steering wheel turned to right with vehicle stopped. |
||
The engine running, steering wheel turned to left with vehicle stopped. |
*1 |
Component with harness connected (Power Steering ECU) |
OK | ![]() |
REPLACE POWER STEERING ECU |
NG | ![]() |
REPLACE STEERING COLUMN ASSEMBLY |
Reassembly
REASSEMBLY
PROCEDURE
1. INSTALL NO. 2 STEERING RACK BOOT
(a) Apply lithium soap base glycol grease to the inside of the small
opening of a new No. 2 steering rack boot.
(b) Install the No. 2 ste ...
Installation
INSTALLATION
PROCEDURE
1. INSTALL INNER REAR VIEW MIRROR ASSEMBLY (w/o Automatic High Beam System)
(a) Using a T20 "TORX" socket wrench, install the inner rear view mirror assembly
with the screw.
Torque:
1.5 N·m {15 kgf·cm, 13 in·lbf}
(b ...
Rear Light Assembly
Components
COMPONENTS
ILLUSTRATION
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT REAR LIGHT ASSEMBLY
(a) Disconnect the connector from the rear light assembly.
(b) Measu ...