Toyota Yaris: Power Steering System / Power Steering Torque Sensor "A" Signal Compare Failure (C151162,C151187,C151262,C151287)

Toyota Yaris XP210 (2020-2022) Reapir and Service Manual / Steering / Power Assist Systems / Power Steering System / Power Steering Torque Sensor "A" Signal Compare Failure (C151162,C151187,C151262,C151287)

DESCRIPTION

The power steering ECU assembly supplies a voltage of 5 V to the torque sensor (electric power steering column sub-assembly) and monitors the voltage value of the Hall IC inside the torque sensor (electric power steering column sub-assembly) which changes in response to changes in the magnetic flux density (steering torque) detected by the Hall IC, and calculates the assist torque.

While DTC C151162, C151187, C151262 or C151287 is detected, power assist is stopped or assist amount is limited due to fail-safe operation.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Warning Indicate

Return-to-normal Condition

Note

C151162

Power Steering Torque Sensor "A" Signal Compare Failure

Diagnosis Condition: IG ON

Malfunction Status: The difference between 1A and 1B of the TRQ1 output signal is more than a certain value.

  • Torque sensor (Electric power steering column sub-assembly)
  • Power steering ECU assembly

EPS warning light: Comes on

Ignition switch ON again

-

C151187

Power Steering Torque Sensor "A" Missing Message

Diagnosis Condition: IG ON

Malfunction Status: When the battery voltage is 9.0 V or more, the TRQ1 signal is not detected, breaks communication protocol, has a CRC error, or has an invalid rolling counter.

  • Torque sensor (Electric power steering column sub-assembly)
  • Power steering ECU assembly

EPS warning light: Comes on

Ignition switch ON again

-

C151262

Power Steering Torque Sensor "B" Signal Compare Failure

Diagnosis Condition: IG ON

Malfunction Status: The difference between 2A and 2B of the TRQ2 output signal is more than a certain value.

  • Torque sensor (Electric power steering column sub-assembly)
  • Power steering ECU assembly

EPS warning light: Comes on

Ignition switch ON again

-

C151287

Power Steering Torque Sensor "B" Missing Message

Diagnosis Condition: IG ON

Malfunction Status: When the battery voltage is 9.0 V or more, the TRQ2 signal is not detected, breaks communication protocol, has a CRC error, or has an invalid rolling counter.

  • Torque sensor (Electric power steering column sub-assembly)
  • Power steering ECU assembly

EPS warning light: Comes on

Ignition switch ON again

-

CAUTION / NOTICE / HINT

NOTICE:

  • When the electric power steering column sub-assembly has been replaced, perform Power Steering ECU Initial Setting (assist map writing).

    Click here

  • When the power steering ECU assembly has been replaced, perform Power Steering ECU Initial Setting (assist map writing).

    Click here

PROCEDURE

1.

REPLACE POWER STEERING ECU ASSEMBLY AND ELECTRIC POWER STEERING COLUMN SUB-ASSEMBLY

(a) Replace the power steering ECU assembly.

Click here

(b) Replace the electric power steering column sub-assembly.

Click here

NEXT

END

    Supply Voltage Circuit Circuit Voltage Above Threshold (C123A17)

    DESCRIPTION The power steering ECU assembly distinguishes the ignition switch status as ON or off through the IG power source circuit. DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Return-to-normal Condition Note C123A17 Supply Voltage Circuit Circuit Voltage Above Threshold IG voltage is 18...

    Power Steering Torque Sensor "A" Supply Voltage Circuit Voltage Above Threshold (C151A17)

    DESCRIPTION The power steering ECU assembly supplies a voltage of 5 V to the torque sensor (electric power steering column sub-assembly) and monitors the voltage value of the Hall IC inside the torque sensor (electric power steering column sub-assembly) which changes in response to changes in the magnetic flux density (steering torque) detected by the Hall IC, and calculates the assist torque...

    Other information:

    Toyota Yaris XP210 (2020-2022) Reapir and Service Manual: Fuel Pump Control Module Internal Electronic Failure (P064A49)


    MONITOR DESCRIPTION The fuel pump control ECU has a self-diagnosis function. If there is an internal malfunction, the fuel pump control ECU sends a malfunction signal to the ECM via the FPC drive circuit. Based on the signal, the ECM judges that there is a malfunction in the fuel pump control ECU stores a DTC...

    Toyota Yaris XP210 (2020-2022) Reapir and Service Manual: Removal


    REMOVAL CAUTION / NOTICE / HINT HINT: Use the same procedure for the RH side and LH side. The following procedure is for the LH side. PROCEDURE 1. REMOVE FRONT BUMPER ASSEMBLY Click here 2. REMOVE FOG LIGHT ASSEMBLY (a) Remove the 3 screws and fog light assembly...

    Categories

    Front Seat Belt Pretensioners

    The front seat belt pretensioners are designed to deploy in moderate or severe frontal, near frontal collisions.

    In addition, the pretensioners operate when a side collision or a rollover accident is detected. The pretensioners operate differently depending on what types of air bags are equipped. For more details about the seat belt pretensioner operation, refer to the SRS Air Bag Deployment Criteria.

    read more

     
    Copyright © 2022 www.toyaris4.com