Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000001I4S9
Model Year Start: 2020 Model: GR Corolla Prod Date Range: [03/2019 - 09/2019]
Title: POWER ASSIST SYSTEMS: POWER STEERING SYSTEM (for Gasoline Model (for Sedan)): U010087,U012687,U012987,U023A87; Lost Communication with ECM/PCM "A" Missing Message; 2020 MY Corolla Corolla Hatchback GR Corolla [03/2019 - 09/2019]

DTC

U010087

Lost Communication with ECM/PCM "A" Missing Message

DTC

U012687

Lost Communication with Steering Angle Sensor Module Missing Message

DTC

U012987

Lost Communication with Brake System Control Module Missing Message

DTC

U023A87

Lost Communication with Image Processing Module "A" Missing Message

DESCRIPTION

The power steering ECU with motor assembly receives signals from the ECM, steering sensor, skid control ECU (brake actuator assembly) and forward recognition camera (w/ Forward Recognition Camera) 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 actuator assembly)

  • CAN communication system
  • Skid control ECU (Brake actuator assembly)

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/ Forward Recognition Camera

PROCEDURE

1.

GO TO CAN COMMUNICATION SYSTEM

(a) Go to CAN communication system.

Click here 2019 - 2022 MY Corolla Corolla Hatchback GR Corolla [06/2018 - 09/2022]; NETWORKING: CAN COMMUNICATION SYSTEM (for Gasoline Model): HOW TO PROCEED WITH TROUBLESHOOTING

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