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 |
Installation
INSTALLATION
PROCEDURE
1. INSTALL TRANSMISSION CONTROL CABLE ASSEMBLY
NOTICE:
Before installing the transmission control cable assembly, check that the park/neutral
position switch and the shift lever are in neutral.
(a) Pass the control cable from the ...
Operation Check
OPERATION CHECK
1. CHECK BASIC OPERATION
(a) Conditions necessary for the power back door to open:
The power back door main switch is off (switch is not pressed).
The back door is unlocked (except wireless operation).
The vehicle speed is 3 k ...
Speed Signal Malfunction (B15C2)
DESCRIPTION
The navigation receiver assembly receives a vehicle speed signal from the combination
meter assembly and information from the navigation antenna assembly, and then adjusts
the vehicle position.
The navigation receiver assembly stores this DTC ...