Last Modified: 07-31-2024 6.11:8.1.0 Doc ID: RM10000000289VP
Model Year Start: 2023 Model: GR Corolla Prod Date Range: [11/2022 -           ]
Title: SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM: U012987,U023A87; Lost Communication with Brake System Control Module "A" Missing Message; 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]

DTC

U012987

Lost Communication with Brake System Control Module "A" Missing Message

DTC

U023A87

Lost Communication with Image Processing Module "A" Missing Message

DESCRIPTION

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Warning Indicate

DTC Output from

Priority

Test Mode / Check Mode

U012987

Lost Communication with Brake System Control Module "A" Missing Message

Communication stop occurs between the airbag sensor assembly and skid control ECU continuously for approximately 2 seconds or more.

  • CAN communication system
  • Airbag sensor assembly
  • Skid control ECU (brake actuator assembly)

Comes on

SRS Airbag

B

Does not apply to test/check mode

U023A87

Lost Communication with Image Processing Module "A" Missing Message

Communication stop occurs between the airbag sensor assembly and forward recognition camera continuously for approximately 10 seconds or more.

  • CAN communication system
  • Airbag sensor assembly
  • Forward recognition camera

Comes on

SRS Airbag

B

Does not apply to test/check mode

PROCEDURE

1.

CHECK CAN COMMUNICATION SYSTEM

(a) Using the GTS, check if the CAN communication system is functioning normally.

HINT:

for HV Model: Click here 2023 - 2025 MY Corolla Corolla HV [11/2022 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM (for HV Model): DIAGNOSIS SYSTEM

for Gasoline Model: Click here 2023 MY Corolla Corolla Hatchback GR Corolla [11/2022 - 03/2023]; NETWORKING: CAN COMMUNICATION SYSTEM (for Gasoline Model): DIAGNOSIS SYSTEM 2023 MY Corolla Corolla Hatchback GR Corolla [03/2023 - 08/2023]; NETWORKING: CAN COMMUNICATION SYSTEM (for Gasoline Model): DIAGNOSIS SYSTEM 2024 - 2025 MY Corolla Corolla Hatchback GR Corolla [08/2023 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM (for Gasoline Model): DIAGNOSIS SYSTEM

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END