Toyota Yaris: Power Door Lock Control System / Problem Symptoms Table

Toyota Yaris XP210 (2020-2022) Reapir and Service Manual / Vehicle Interior / Door Lock / Power Door Lock Control System / Problem Symptoms Table

PROBLEM SYMPTOMS TABLE

NOTICE:

If the main body ECU (multiplex network body ECU) is replaced, refer to the Registration.

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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.

Symptom

Suspected Area

Link

All doors lock/unlock functions do not operate via door key cylinder.

Main body ECU (Multiplex network body ECU)

Front door lock with motor assembly LH

Harness or connector

All doors lock/unlock functions do not operate via master switch.

Main body ECU (Multiplex network body ECU)

Multiplex network master switch assembly

All doors lock function do not operate via door control switch and door key cylinder.

Power distribution box assembly

Main body ECU (Multiplex network body ECU)

All doors unlock function do not operate via door control switch and door key cylinder.

Power distribution box assembly

Main body ECU (Multiplex network body ECU)

Only driver door lock/unlock functions do not operate.

Front door lock with motor assembly LH

Harness or connector

-

Power distribution box assembly

Only driver door unlock function does not operate (lock function operates).

Front door lock with motor assembly LH

Harness or connector

-

Main body ECU (Multiplex network body ECU)

Power distribution box assembly

Only front passenger door lock/unlock functions do not operate.

Front door lock with motor assembly RH

Harness or connector

-

Key lock-in prevention function does not operate.

Front door courtesy light switch assembly LH

Front door courtesy light switch assembly RH

Front door lock with motor assembly LH

Front door lock with motor assembly RH

Main body ECU (Multiplex network body ECU)

Power distribution box assembly

Only back door open function does not operate.

Smart key system (for Entry Function)

Back door opener switch assembly

Back door lock assembly with courtesy light switch

Harness or connector

Power distribution box assembly

Main body ECU (Multiplex network body ECU)

Lock operation continues even after doors have been locked.*1

Front door lock with motor assembly LH

Front door lock with motor assembly RH

Harness or connector

-

Main body ECU (Multiplex network body ECU)

Power distribution box assembly

  • *1: 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 2 times.

    Initialization

    INITIALIZATION BACK DOOR LOCK (a) When the auxiliary battery is reconnected: If the back door is locked and therefore cannot be opened, it is necessary to unlock the back door using the door control switch, electrical key transmitter sub-assembly switch...

    Terminals Of Ecu

    TERMINALS OF ECU CHECK POWER DISTRIBUTION BOX ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) *1 Power Distribution Box Assembly *2 Main Body ECU (Multiplex Network Body ECU) (a) Remove the main body ECU (multiplex network body ECU) from the power distribution box assembly...

    Other information:

    Toyota Yaris XP210 (2020-2022) Reapir and Service Manual: Inspection


    INSPECTION PROCEDURE 1. INSPECT FRONT NO. 1 DIFFERENTIAL CASE SUB-ASSEMBLY (a) Using SST, rotate the front differential side gear as shown in the illustration. SST: 09528-52010 09528-05030 Standard: The front differential side gear does not lock when rotated in either direction...

    Toyota Yaris XP210 (2020-2022) Reapir and Service Manual: Communication Error from VSC to ECM Invalid Serial Data Received (P163081)


    DESCRIPTION The skid control ECU (brake actuator assembly) sends signals such as brake request signals to the ECM. If an abnormal signal is detected, the ECM stores DTC P163081. DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from P163081 Communication Error from VSC to ECM Invalid Serial Data Received When the dynamic radar cruise control system is operating, the ECM detects abnormal data sent from the skid control ECU (brake actuator assembly) for approximately 1 second or more...

    Categories

    Keys

    Toyota Yaris. Keys

    Smart key Auxiliary key Key code number plate

    To use the auxiliary key, press the knob and pull out the auxiliary key from the smart key.

    Toyota Yaris. Keys

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