Last Modified: 07-31-2024 6.11:8.1.0 Doc ID: RM100000002D0HI
Model Year Start: 2024 Model: GR Corolla Prod Date Range: [08/2023 -           ]
Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model with Electric Parking Brake System): U010087,...,U115C87; Lost Communication With ECM/PCM "A" Missing Message; 2024 - 2025 MY Corolla Corolla Hatchback GR Corolla [08/2023 -        ]

DTC

U010087

Lost Communication With ECM/PCM "A" Missing Message

DTC

U010187

Lost Communication with TCM Missing Message

DTC

U012500

Lost Communication with Multi-axis Acceleration Sensor Module "A" (2WD) Missing Message

DTC

U012687

Lost Communication with Steering Angle Sensor Module Missing Message

DTC

U013187

Lost Communication with Power Steering Control Module Missing Message

DTC

U014087

Lost Communication with Body Control Module Missing Message

DTC

U015187

Lost Communication with Restraints Control Module Missing Message

DTC

U115C87

Lost Communication with ECM/PCM "A" (ch5) Missing Message

DESCRIPTION

The skid control ECU (brake actuator assembly) communicates with the following ECUs and sensors via CAN communication.

  • ECM
  • TCM (ECM)
  • Yaw rate and acceleration sensor (airbag sensor assembly)
  • Steering angle sensor
  • Power steering ECU with motor assembly
  • Main body ECU (multiplex network body ECU)
  • Airbag sensor assembly

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Note

U010087

Lost Communication With ECM/PCM "A" Missing Message

The +BS terminal voltage is between 9.6 and 16.5 V, the vehicle speed is 6 km/h (4 mph) or more, and signals cannot be sent to the ECM for 2 seconds or more.
  • CAN communication system
  • ECM
  • Skid control ECU (brake actuator assembly)

Does not come on

-

U010187

Lost Communication with TCM Missing Message

The +BS terminal voltage is between 9.6 and 16.5 V, the vehicle speed is 6 km/h (4 mph) or more, and signals cannot be sent to the TCM (ECM) for 2 seconds or more.
  • CAN communication system
  • TCM (ECM)
  • Skid control ECU (brake actuator assembly)

Does not come on

-

U012500

Lost Communication with Multi-axis Acceleration Sensor Module "A" (2WD) Missing Message

The +BS terminal voltage is between 9.6 and 16.5 V, the vehicle speed is 6 km/h (4 mph) or more, and signals from the yaw rate and acceleration sensor (airbag sensor assembly) cannot be received for 1 second or more.
  • CAN communication system
  • Yaw rate and acceleration sensor (airbag sensor assembly)
  • Skid control ECU (brake actuator assembly)

Does not come on

-

U012687

Lost Communication with Steering Angle Sensor Module Missing Message

The +BS terminal voltage is between 9.6 and 16.5 V, the vehicle speed is 6 km/h (4 mph) or more, and signals from the steering angle sensor cannot be received for 1 second or more.
  • CAN communication system
  • Steering angle sensor
  • Skid control ECU (brake actuator assembly)

Does not come on

-

U013187

Lost Communication with Power Steering Control Module Missing Message

The +BS terminal voltage is between 9.6 and 16.5 V, data cannot be received from the power steering ECU (rack and pinion power steering gear assembly) for 1 seconds or more.
  • CAN communication system
  • Power steering ECU (rack and pinion power steering gear assembly)
  • Skid control ECU (brake actuator assembly)

Does not come on

-

U014087

Lost Communication with Body Control Module Missing Message

The +BS terminal voltage is between 9.6 and 16.5 V, data cannot be received from the main body ECU (multiplex network body ECU) for 2 seconds or more.
  • CAN communication system
  • Main body ECU (multiplex network body ECU)
  • Skid control ECU (brake actuator assembly)

Does not come on

-

U015187

Lost Communication with Restraints Control Module Missing Message

The +BS terminal voltage is between 9.6 and 16.5 V, the vehicle speed is 6 km/h (4 mph) or more, and signals from the airbag sensor assembly cannot be received for 5 seconds or more.
  • CAN communication system
  • Airbag sensor assembly
  • Skid control ECU (brake actuator assembly)

Does not come on

-

U115C87

Lost Communication with ECM/PCM "A" (ch5) Missing Message

Signals cannot be sent to the ECM for 2 seconds or more.
  • CAN communication system
  • ECM
  • Skid control ECU (brake actuator assembly)

Comes on

SAE Code: U115C

MONITOR DESCRIPTION

U115C:

  • When 3 seconds or more have elapsed after the ignition switch is turned to ON, the power supply voltage of the skid control ECU (brake actuator assembly) is a certain value or more, and data is not able to be received from the ECM for a certain amount of time, the skid control ECU (brake actuator assembly) illuminates the MIL and stores this DTC.

MONITOR STRATEGY

Related DTCs

U115C: CAN communication failure for CL (ENG)

Required Sensors/Components(Main)

Skid control ECU (brake actuator assembly)

Required Sensors/Components(Related)

Skid control ECU (brake actuator assembly)

Frequency of Operation

Continuous

Duration

2 seconds

MIL Operation

Immediately

Sequence of Operation

None

TYPICAL ENABLING CONDITIONS

Monitor runs whenever the following DTCs are not stored

TMC's intellectual property

Other conditions belong to TMC's intellectual property

-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

-

COMPONENT OPERATING RANGE

TMC's intellectual property

-

CONFIRMATION DRIVING PATTERN

NOTICE:

When performing the normal judgment procedure, make sure that the driver door is closed and is not opened at any time during the procedure.

HINT:

  • After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
  • When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
  1. Connect the GTS to the DLC3.
  2. Turn the ignition switch to ON and turn the GTS on.
  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
  4. Turn the ignition switch off.
  5. Turn the ignition switch to ON and turn the GTS on.
  6. Wait for 2 seconds or more. [*]

    HINT:

    [*]: Normal judgment procedure.

    The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.

  7. Enter the following menus: Chassis / Brake/EPB* / Utility / All Readiness.

    *: Electric Parking Brake System

  8. Check the DTC judgment result.

    HINT:

    • If the judgment result shows NORMAL, the system is normal.
    • If the judgment result shows ABNORMAL, the system has a malfunction.
    • If the judgment result shows INCOMPLETE, perform driving pattern again.

PROCEDURE

1.

CHECK DTC OUTPUT (HEALTH CHECK)

(a) Connect the GTS to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the GTS on.

(d) Operate the GTS to clear the codes. Enter the following menus: Chassis / Brake/EPB / Trouble Codes.

Chassis > Brake > Clear DTCs

(e) Press the DTC clear button.

(f) Turn the ignition switch off.

(g) Turn the ignition switch to ON.

(h) Enter the following menus: System Select / Health Check.

(i) Check for DTCs.

Result

Proceed to

DTCs for related systems are output together with DTC U010087, U010187, U012500, U012687, U013187, U014087, U015187 or U115C87.

A

U010087, U010187, U012500, U012687, U013187, U014087, U015187 or U115C87 is output.

B

DTCs are not output.

C
A

GO TO DIAGNOSTIC TROUBLE CODE CHART (RELATED SYSTEM)
B

INSPECT CAN COMMUNICATION SYSTEM

C

USE SIMULATION METHOD TO CHECK