Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000001NYRK
Model Year Start: 2021 Model: Corolla Prod Date Range: [04/2020 - 09/2022]
Title: DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM (for Sedan, HV Model): PROBLEM SYMPTOMS TABLE; 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]

PROBLEM SYMPTOMS TABLE

HINT:

  • Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
  • Inspect the fuses and relays related to this system before inspecting the suspected areas below.

Power Door Lock Control System

Symptom

Suspected Area

Link

Only driver door LOCK functions do not operate

Front door lock with motor assembly LH

2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [03/2019 - 09/2022]; DOOR LOCK: FRONT DOOR LOCK: REMOVAL

Wire harness or connector

-

Instrument panel junction block assembly

-

Only driver door UNLOCK functions do not operate

Front door lock with motor assembly LH

2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [03/2019 - 09/2022]; DOOR LOCK: FRONT DOOR LOCK: REMOVAL

Wire harness or connector

-

Main body ECU (Multiplex network body ECU)

-

Instrument panel junction block assembly

-

Only front passenger door, rear door LH and rear door RH LOCK/UNLOCK functions do not operate

Main body ECU (Multiplex network body ECU)

-

Instrument panel junction block assembly

-

Only front passenger door LOCK/UNLOCK functions do not operate

Front door lock with motor assembly RH

2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [03/2019 - 09/2022]; DOOR LOCK: FRONT DOOR LOCK: REMOVAL

Wire harness or connector

-

Instrument panel junction block assembly

-

Only rear door LH LOCK/UNLOCK functions do not operate.

Rear door lock with motor assembly LH

2020 - 2021 MY Corolla Corolla Hatchback Corolla HV GR Corolla [03/2019 - 06/2020]; DOOR LOCK: REAR DOOR LOCK: REMOVAL 2021 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [06/2020 - 09/2022]; DOOR LOCK: REAR DOOR LOCK: REMOVAL

Wire harness or connector

-

Instrument panel junction block assembly

-

Only rear door RH LOCK/UNLOCK functions do not operate.

Rear door lock with motor assembly RH

2020 - 2021 MY Corolla Corolla Hatchback Corolla HV GR Corolla [03/2019 - 06/2020]; DOOR LOCK: REAR DOOR LOCK: REMOVAL 2021 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [06/2020 - 09/2022]; DOOR LOCK: REAR DOOR LOCK: REMOVAL

Wire harness or connector

-

Instrument panel junction block assembly

-

All doors LOCK/UNLOCK functions do not operate via door key cylinder

Main body ECU (Multiplex network body ECU)

2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM (for Sedan, HV Model): All Doors LOCK/UNLOCK Functions do not Operate Via Door Key Cylinder

Front door lock with motor assembly LH

Wire harness or connector

All doors LOCK/UNLOCK functions do not operate via master switch

Lin communication system

2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM (for Sedan, HV Model): All Doors LOCK/UNLOCK Functions do not Operate Via Master Switch

Multiplex network master switch assembly

Main body ECU (Multiplex network body ECU)

All doors LOCK/UNLOCK functions do not operate via door control switch*1

Main body ECU (Multiplex network body ECU)

2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM (for Sedan, HV Model): All Doors LOCK/UNLOCK Functions do not Operate Via Door Control Switch

Door control switch assembly

Wire harness or connector

Instrument panel junction block assembly

All doors LOCK/UNLOCK functions do not operate via multiplex network master switch assembly and door key cylinder

Instrument panel junction block assembly

-

Main body ECU (Multiplex network body ECU)

-

Key lock-in prevention function does not operate

Main body ECU (Multiplex network body ECU)

-

Speed-sensitive automatic door lock function does not operate (meter/gauge system operates normally).*1

CAN communication system

2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; NETWORKING: CAN COMMUNICATION SYSTEM (for HV Model): HOW TO PROCEED WITH TROUBLESHOOTING

Main body ECU (Multiplex network body ECU)

-

Shift-linked automatic door lock/unlock functions do not operate (automatic transaxle system operates normally).*1

CAN communication system

2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; NETWORKING: CAN COMMUNICATION SYSTEM (for HV Model): HOW TO PROCEED WITH TROUBLESHOOTING

Main body ECU (Multiplex network body ECU)

-

Hybrid vehicle control ECU

2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; HYBRID / BATTERY CONTROL: HV RELAY ASSEMBLY (for NICKEL METAL HYDRIDE BATTERY): REMOVAL

Lock operation continues even after doors have been locked*2

Front door lock with motor assembly LH

2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [03/2019 - 09/2022]; DOOR LOCK: FRONT DOOR LOCK: REMOVAL

Front door lock with motor assembly RH

2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [03/2019 - 09/2022]; DOOR LOCK: FRONT DOOR LOCK: REMOVAL

Rear door lock with motor assembly LH

2020 - 2021 MY Corolla Corolla Hatchback Corolla HV GR Corolla [03/2019 - 06/2020]; DOOR LOCK: REAR DOOR LOCK: REMOVAL 2021 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [06/2020 - 09/2022]; DOOR LOCK: REAR DOOR LOCK: REMOVAL

Rear door lock with motor assembly RH

2020 - 2021 MY Corolla Corolla Hatchback Corolla HV GR Corolla [03/2019 - 06/2020]; DOOR LOCK: REAR DOOR LOCK: REMOVAL 2021 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [06/2020 - 09/2022]; DOOR LOCK: REAR DOOR LOCK: REMOVAL

Wire harness or connector

-

Instrument panel junction block assembly

-

Main body ECU (Multiplex network body ECU)

-

When returning to the vehicle, although door unlock operation was not performed, doors were in an unlocked state.

Main body ECU (Multiplex network body ECU)

2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM (for Sedan, HV Model): Improper Operation

When returning to the vehicle, although door lock operation was not performed, doors were in a locked state.

Main body ECU (Multiplex network body ECU)

2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM (for Sedan, HV Model): Improper Operation

Remote door lock functions do not operate*3

Telematics system

2021 - 2025 MY Corolla Corolla HV [04/2020 -        ]; TELEMATICS: TELEMATICS SYSTEM (for HV Model): HOW TO PROCEED WITH TROUBLESHOOTING

HINT:

  • *1: w/ Door Control Switch Assembly
  • *2: When the door unlock detection switch detects an unlock position signal after a door lock operation has been performed, a door lock operation will be performed 3 times.
  • *3: for Remote Connect Compatible Type