Toyota Yaris: Power Steering System / Lost Communication with Steering Angle Sensor Module Missing Message (U012687,U010087,U012987,U014087,U023A87)

Toyota Yaris XP210 (2020-2024) Reapir and Service Manual / Steering / Power Assist Systems / Power Steering System / Lost Communication with Steering Angle Sensor Module Missing Message (U012687,U010087,U012987,U014087,U023A87)

DESCRIPTION

The power steering ECU assembly receives signals from the steering sensor, skid control ECU (brake actuator assembly), forward recognition camera, ECM and clearance warning ECU assembly via CAN communication.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Warning Indicate

Return-to-normal Condition

Note

U010087

Lost Communication With ECM/PCM "A" Missing Message

Lost communication with ECM

  • CAN communication system
  • ECM

EPS warning light: Does not come on

After normal confirmation

-

U012687

Lost Communication with Steering Angle Sensor Module Missing Message

Lost communication with steering sensor

  • CAN communication system
  • Steering sensor

EPS warning light: Does not come on

After normal confirmation

-

U012987

Lost Communication with Brake System Control Module Missing Message

Lost communication with skid control ECU (brake booster with master cylinder assembly)

  • CAN communication system
  • Skid control ECU (Brake booster with master cylinder assembly)(for TMC Made HV Model)
  • Skid control ECU (Brake actuator assembly)(for TMMF Made HV Model)

EPS warning light: Does not come on

After normal confirmation

-

U014087

Lost Communication with Body Control Module Missing Message

Lost communication with main body ECU (multiplex network body ECU)

  • CAN communication system
  • Main body ECU (multiplex network body ECU)

EPS warning light: Does not come on

After normal confirmation

-

U023A87

Lost Communication with Image Processing Module "A" Missing Message

Lost communication with forward recognition camera

  • CAN communication system
  • Forward recognition camera

EPS warning light: Does not come on

After normal confirmation

w/ Toyota Safety Sense

PROCEDURE

1.

GO TO CAN COMMUNICATION SYSTEM

(a) Go to CAN communication system.

Click here

NEXT

END

    Power Steering Motor "A" Supply Voltage Circuit Voltage Below Threshold (C155A16,C155A17,C155B16,C155B17)

    DESCRIPTION If a problem occurs in the system, the power source relay circuit and the motor relay circuit are shut off to stop power assist. The ECU must be replaced when there is a problem with the relays because the relays are built into the ECU...

    Heavy Steering Feel (EPS Warning Light (Yellow))

    PROCEDURE 1. READ VALUE USING GTS (a) Read the Data List according to the display on the GTS. Chassis > EMPS > Data List Tester Display Measurement Item Range Normal Condition Diagnostic Note Battery Voltage Drop History Number of times vehicle auxiliary battery voltage dropped Min...

    Other information:

    Toyota Yaris XP210 (2020-2024) Reapir and Service Manual: Data List / Active Test


    DATA LIST / ACTIVE TEST DATA LIST NOTICE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not. HINT: Using the GTS to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts...

    Toyota Yaris XP210 (2020-2024) Reapir and Service Manual: Removal


    REMOVAL PROCEDURE 1. SECURE VEHICLE (a) Fully apply the parking brake and chock a wheel. CAUTION: Make sure to apply the parking brake and chock a wheel before performing this procedure. If the vehicle is not secure and the shift lever is moved to neutral, the vehicle may suddenly move, possibly resulting in an accident or serious injury...

    Categories

    Key Suspend Function

    If a key is left in the vehicle, the functions of the key left in the vehicle are temporarily suspended to prevent theft of the vehicle.

    To restore the functions, press the unlock button on the functions-suspended key in the vehicle.

    read more

     
    Copyright © 2024 www.toyaris4.com