Last Modified: 07-31-2024 6.11:8.1.0 Doc ID: RM10000000278F1
Model Year Start: 2023 Model: Corolla HV Prod Date Range: [09/2022 -           ]
Title: HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY with PA10): U11BC87; Lost Communication with Hybrid/EV Powertrain Control Module (ch6) Missing Message; 2023 - 2025 MY Corolla HV [09/2022 -        ]

DTC

U11BC87

Lost Communication with Hybrid/EV Powertrain Control Module (ch6) Missing Message

DESCRIPTION

The hybrid vehicle control ECU transmits and receives signals via CAN communication to and from the No. 2 skid control ECU (brake actuator assembly).

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

Note

U11BC87

Lost Communication with Hybrid/EV Powertrain Control Module (ch6) Missing Message

No. 2 skid control ECU (brake actuator assembly) cannot receive signals from the hybrid vehicle control ECU

(1 trip detection logic)

  • No. 2 skid control ECU (brake actuator assembly)
  • Hybrid vehicle control ECU
  • Wire harness or connector

Does not come on

Master Warning:

Does not come on

SAE Code:

U11BC

CONFIRMATION DRIVING PATTERN

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.

Click here 2023 - 2025 MY Corolla HV [09/2022 -        ]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY with PA10): UTILITY

  1. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
  2. Turn the ignition switch off and wait for 2 minutes or more.
  3. Turn the ignition switch to ON and wait for 2 minutes or more.
  4. Enter the following menus: Powertrain / Hybrid Control / Utility / All Readiness.
  5. 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 or N/A, perform the normal judgment procedure again.

PROCEDURE

1.

GO TO CAN COMMUNICATION SYSTEM

Click here 2023 - 2025 MY Corolla Corolla HV [09/2022 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM (for HV Model): HOW TO PROCEED WITH TROUBLESHOOTING

NEXT

END