DESCRIPTION
The torque sensor converts the rotational torque received from the steering wheel into electric signals and sends them to the power steering ECU assembly.
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
Warning Indicate |
Return-to-normal Condition |
Note |
---|---|---|---|---|---|---|
C1511 |
Torque Sensor1 |
Torque sensor malfunction |
|
EPS warning light: Comes on |
The ECU judges the system has returned to normal or the ignition switch ON again |
- |
C1512 |
Torque Sensor2 |
Torque sensor malfunction |
|
EPS warning light: Comes on |
The ECU judges the system has returned to normal or the ignition switch ON again |
- |
C1513 |
Torque Sensor Deviation Excessive |
Torque sensor malfunction |
|
EPS warning light: Comes on |
The ECU judges the system has returned to normal or the ignition switch ON again |
- |
C1514 |
Torque Sensor Power Supply Voltage |
Torque sensor malfunction |
|
EPS warning light: Comes on |
Ignition switch ON again |
- |
C1517 |
Torque Hold |
Torque sensor malfunction |
|
EPS warning light: Comes on |
Ignition switch ON again |
- |
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Click here
Click here
PROCEDURE
1. |
CHECK CONNECTOR CONNECTION CONDITION |
(a) Check the connection condition of the torque sensor connector.
OK:
Torque sensor connector is securely connected to the power steering ECU assembly.
NG | ![]() |
CONNECT CONNECTOR |
|
2. |
CHECK POWER STEERING ECU ASSEMBLY (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 |
Condition |
Specified Condition |
---|---|---|
z3-7 (TRQV1) - z3-8 (TRQG1) |
Ignition switch ON |
4.5 to 5.5 V |
z3-3 (TRQV2) - z3-2 (TRQG2) |
Ignition switch ON |
4.5 to 5.5 V |
NG | ![]() |
REPLACE POWER STEERING ECU ASSEMBLY |
|
3. |
CHECK POWER STEERING ECU ASSEMBLY (TRQ1, TRQ2 VOLTAGE) |
(a) Turn the engine running. |
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
z3-9 (TRQ1) - z3-8 (TRQG1) |
Engine running and steering wheel not being turned (without load) |
2.3 to 2.7 V |
Engine running and steering wheel being turned to the right with vehicle stopped |
2.5 to 3.8 V |
|
Engine running and steering wheel being turned to the left with vehicle stopped |
1.2 to 2.5 V |
|
z3-1 (TRQ2) - z3-2 (TRQG2) |
Engine running and steering wheel not being turned (without load) |
2.3 to 2.7 V |
Engine running and steering wheel being turned to the right with vehicle stopped |
1.2 to 2.5 V |
|
Engine running and steering wheel being turned to the 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:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
Sum of voltage between z3-9 (TRQ1) and z3-8 (TRQG1) and voltage between z3-1 (TRQ2) and z3-2 (TRQG2) |
Engine running and steering wheel not being turned (without load) |
Between 4.75 V and 5.25 V |
Engine running and steering wheel being turned to the right with vehicle stopped |
||
Engine running and steering wheel being turned to the left with vehicle stopped |
OK | ![]() |
REPLACE POWER STEERING ECU ASSEMBLY |
NG | ![]() |
REPLACE ELECTRIC POWER STEERING COLUMN SUB-ASSEMBLY |
Toyota CH-R Service Manual > Lin Communication System: Precaution
PRECAUTION
IGNITION SWITCH EXPRESSIONS
(a) The type of ignition switch used on this model differs depending on the specifications
of the vehicle. The expressions listed in the table below are used in this section.
Expression
Ignition Switch (Position)
Engine Swi ...
Toyota CH-R Service Manual > Wireless Door Lock Control System(w/ Smart Key System): Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
Use the table below to help determine the cause of problem symptoms.
If multiple suspected areas are listed, the potential causes of the symptoms
are listed in order of probability in the "Suspected Area" column of the
table. Check each sy ...