Last Modified: 08-21-2023 6.11:8.1.0 Doc ID: RM100000001BQOS
Model Year Start: 2019 Model: Avalon HV Prod Date Range: [04/2018 -           ]
Title: DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM(for HV Model): All Doors LOCK/UNLOCK Functions do not Operate Via Master Switch; 2019 - 2022 MY Avalon HV [04/2018 -        ]

All Doors LOCK/UNLOCK Functions do not Operate Via Master Switch

DESCRIPTION

The main body ECU (multiplex network body ECU) receives switch signals from the multiplex network master switch assembly and driver door key cylinder lock or unlock switch signals from the front door lock with motor assembly LH. The main body ECU (multiplex network body ECU) activates the door lock motor on each door according to these signals.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • The power door lock control system uses the LIN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the power door lock control system after confirming that the communication systems are functioning properly.

    Click here 2019 - 2022 MY Avalon HV [04/2018 -        ]; NETWORKING: LIN COMMUNICATION SYSTEM (for HV Model): HOW TO PROCEED WITH TROUBLESHOOTING

  • Before replacing the main body ECU (multiplex network body ECU), refer to Registration.

    Click here 2019 - 2020 MY Avalon HV [04/2018 - 08/2020]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, HV Model): REGISTRATION 2021 - 2022 MY Avalon HV [08/2020 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, HV Model): REGISTRATION

PROCEDURE

1.

CHECK FOR DTC (LIN COMMUNICATION SYSTEM)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Main Body / Clear DTCs.

(e) Clear the DTCs.

Body Electrical > Main Body > Clear DTCs

(f) Recheck for DTCs.

Body Electrical > Main Body > Trouble Codes

OK:

DTC B1206 is not output.

NG

GO TO LIN COMMUNICATION SYSTEM (DTC B1206)

OK

2.

REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY

(a) Replace the multiplex network master switch assembly.

Click here 2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; WINDOW / GLASS: POWER WINDOW MASTER SWITCH: REMOVAL

NEXT

3.

CHECK DOOR LOCK OPERATION

(a) Check that all doors can be locked and unlocked by the multiplex network master switch assembly.

Click here 2019 - 2022 MY Avalon HV [04/2018 -        ]; DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM(for HV Model): OPERATION CHECK

OK:

All doors can be locked and unlocked by the multiplex network master switch assembly.

OK

END (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY WAS DEFECTIVE)
NG

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) 2019 - 2021 MY Avalon Avalon HV [04/2018 - 08/2021]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2022 MY Avalon Avalon HV [08/2021 -        ]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL