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 power switch is turned on (IG) again | - |
C1512 | Torque Sensor2 | Torque sensor malfunction |
| EPS warning light: Comes on | The ECU judges the system has returned to normal or the power switch is turned on (IG) 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 power switch is turned on (IG) again | - |
C1514 | Torque Sensor Power Supply Voltage | Torque sensor malfunction |
| EPS warning light: Comes on | Engine switch on (IG) again | - |
C1517 | Torque Hold | Torque sensor malfunction |
| EPS warning light: Comes on | Engine switch on (IG) again | - |
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Click here
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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 engine switch to on (IG). |
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection | Condition | Specified Condition |
---|---|---|
z8-7 (TRQV1) - z8-8 (TRQG1) | Engine switch on (IG) | 4.5 to 5.5 V |
z8-3 (TRQV2) - z8-2 (TRQG2) | Engine switch on (IG) | 4.5 to 5.5 V |
NG | ![]() | REPLACE POWER STEERING ECU ASSEMBLY |
|
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:
Tester Connection | Condition | Specified Condition |
---|---|---|
z8-9 (TRQ1) - z8-8 (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 | |
z8-1 (TRQ2) - z8-2 (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 z8-9 (TRQ1) and z8-8 (TRQG1) and voltage between z8-1 (TRQ2) and z8-2 (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 |
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