Toyota Camry owners & service manuals

Toyota Camry (XV70): Torque Sensor1 (C1511-C1514,C1517,C1521-C1523,C1528,C1531-C1555)

Toyota Camry Repair Manual XV70 (2018-2024) / Steering / Power Assist Systems / Power Steering System / Torque Sensor1 (C1511-C1514,C1517,C1521-C1523,C1528,C1531-C1555)

DESCRIPTION

While torque sensor system, motor system or ECU system malfunctions are detected, the fail-safe function suspends power assist. However, power assist continues with limited assistance amount if only C1533 or C1534 is output.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Warning Indicate

Return-to-normal Condition

Note

C1511

Torque Sensor1

Torque sensor malfunction

Rack and pinion power steering gear assembly

EPS warning light: Comes on

Ignition switch is turned to ON again

-

C1512

Torque Sensor2

Torque sensor malfunction

Rack and pinion power steering gear assembly

EPS warning light: Comes on

Ignition switch is turned to ON again

-

C1513

Torque Sensor Deviation Excessive

Torque sensor malfunction

Rack and pinion power steering gear assembly

EPS warning light: Comes on

Ignition switch is turned to ON again

-

C1514

Torque Sensor Power Supply Voltage

Torque sensor malfunction

Rack and pinion power steering gear assembly

EPS warning light: Comes on

Ignition switch is turned to ON again

-

C1517

Torque Hold

Torque sensor malfunction

Rack and pinion power steering gear assembly

EPS warning light: Comes on

Ignition switch is turned to ON again

-

C1521

Short in Motor Circuit

Motor overcurrent

Rack and pinion power steering gear assembly

EPS warning light: Comes on

Ignition switch is turned to ON again

-

C1522

Power Supply Sensor

Motor current sensor malfunction

Rack and pinion power steering gear assembly

EPS warning light: Comes on

Ignition switch is turned to ON again

-

C1523

Current Deviation Excessive

Excessively large current deviation

Rack and pinion power steering gear assembly

EPS warning light: Comes on

Ignition switch is turned to ON again

-

C1528

Motor Rotation Angle Sensor

Motor rotation angle sensor malfunction

Rack and pinion power steering gear assembly

EPS warning light: Comes on

Ignition switch is turned to ON again

-

C1531

ECU Malfunction

ECU internal malfunction (CPU malfunction)

Rack and pinion power steering gear assembly

EPS warning light: Comes on

Ignition switch is turned to ON again

-

C1532

ECU Malfunction

ECU internal malfunction (Peripheral circuit malfunction)

Rack and pinion power steering gear assembly

EPS warning light: Comes on

Ignition switch is turned to ON again

-

C1533

Temperature Sensor Circuit is Low or High

ECU internal malfunction (Substrate temperature sensor malfunction)

Rack and pinion power steering gear assembly

EPS warning light: Comes on

The ECU judges the system has returned to normal

-

C1534

EEPROM

ECU internal malfunction (EEPROM error)

Rack and pinion power steering gear assembly

EPS warning light: Comes on

Ignition switch is turned to ON again

-

C1555

Motor Relay Welding Failure

Motor relay circuit malfunction

Rack and pinion power steering gear assembly

EPS warning light: Comes on

Ignition switch is turned to ON again

-

CAUTION / NOTICE / HINT

NOTICE:

If the rack and pinion power steering gear assembly has been replaced, perform assist map writing and torque sensor zero point calibration.

Click here

PROCEDURE

1.

CHECK FOR DTC

(a) Clear the DTCs.

Chassis > EMPS > Clear DTCs

(b) Check for DTCs.

Chassis > EMPS > Trouble Codes

Result

Proceed to

DTCs other than C1511, C1512, C1513, C1514, C1517, C1521, C1522, C1523, C1528, C1531, C1532, C1533, C1534 or C1555 are not output.

A

DTCs other than C1511, C1512, C1513, C1514, C1517, C1521, C1522, C1523, C1528, C1531, C1532, C1533, C1534 or C1555 are output.

B

DTCs are not output.

C
A

REPLACE RACK AND PINION POWER STEERING GEAR ASSEMBLY

B

GO TO DIAGNOSTIC TROUBLE CODE CHART

C

USE SIMULATION METHOD TO CHECK

    READ NEXT:

     Torque Sensor Zero Point Adjustment Undone (C1515)

    DESCRIPTION This DTC does not indicate a malfunction. The power steering ECU (rack and pinion power steering gear assembly) stores this DTC when it determines that torque sensor zero point calibration

     Torque Sensor Zero Point Adjustment Incomplete (C1516)

    DESCRIPTION This DTC does not indicate a malfunction. The power steering ECU (rack and pinion power steering gear assembly) stores this DTC when it determines that torque sensor zero point calibration

     Vehicle Speed Signal (C1541)

    DESCRIPTION The power steering ECU (rack and pinion power steering gear assembly) receives vehicle speed signals from the skid control ECU (brake actuator assembly) via CAN communication. The ECU prov

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     Open in Bus 5 Main Bus Line

    DESCRIPTION There may be an open circuit in one of the CAN main bus lines when the resistance between terminals 15 (CA5H) and 16 (CA5L) of the central gateway ECU (network gateway ECU) is 70 Ω or higher. Symptom Trouble Area Resistance between terminals 15 (CA5H) and 16 (CA5L) o

     Components

    COMPONENTS ILLUSTRATION *1 BATTERY CLAMP SUB-ASSEMBLY - - N*m (kgf*cm, ft.*lbf): Specified torque - - ILLUSTRATION *1 TRANSMISSION CONTROL CABLE ASSEMBLY *2 TRANSMISSION CONTROL SHAFT LEVER *3 PARK/NEUTRAL POSITION SWITCH AS

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