Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000001NYRG
Model Year Start: 2021 Model: GR Corolla Prod Date Range: [04/2020 - 09/2022]
Title: DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM (for Sedan, Gasoline Model): PROBLEM SYMPTOMS TABLE; 2021 - 2022 MY Corolla Corolla Hatchback GR Corolla [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 Hatchback GR Corolla [01/2019 - 09/2022]; DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM (for Sedan, Gasoline Model): All Doors LOCK/UNLOCK Functions do not Operate Via Door Key Cylinder

Front door lock with motor assembly LH

Wire harness or connector

Front door lock with motor assembly RH

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

Lin communication system

2020 - 2022 MY Corolla Corolla Hatchback GR Corolla [01/2019 - 09/2022]; DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM (for Sedan, Gasoline 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

Main body ECU (Multiplex network body ECU)

2020 - 2022 MY Corolla Corolla Hatchback GR Corolla [01/2019 - 09/2022]; DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM (for Sedan, Gasoline 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

Unlock warning switch assembly*1

2020 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 -        ]; DOOR LOCK: UNLOCK WARNING SWITCH: REMOVAL

Instrument panel junction block assembly*1

-

Main body ECU (Multiplex network body ECU)

-

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

CAN communication system

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

Main body ECU (Multiplex network body ECU)

2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [03/2019 - 09/2022]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL

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

CAN communication system

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

Main body ECU (Multiplex network body ECU)

2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [03/2019 - 09/2022]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL

ECM*2

2020 - 2022 MY Corolla Corolla Hatchback [03/2019 - 09/2022]; M20A-FKS (ENGINE CONTROL): ECM: REMOVAL

ECM*3

2020 - 2022 MY Corolla [03/2019 - 09/2022]; 2ZR-FAE (ENGINE CONTROL): ECM: REMOVAL

Lock operation continues even after doors have been locked*4

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

Remote door lock functions do not operate*5

Telematics system

2021 - 2022 MY Corolla Corolla Hatchback GR Corolla [04/2020 - 09/2022]; TELEMATICS: TELEMATICS SYSTEM (for Gasoline Model): HOW TO PROCEED WITH TROUBLESHOOTING

HINT:

  • *1: w/o Smart Key System
  • *2: for M20A-FKS
  • *3: for 2ZR-FAE
  • *4: 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.
  • *5: for Remote Connect Compatible Type