Toyota Yaris: Seat Heater System / Problem Symptoms Table

Toyota Yaris XP210 (2020-2026) Reapir and Service Manual / Vehicle Interior / Seat / Seat Heater System / Problem Symptoms Table

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.
Seat Heater System

Symptom

Suspected Area

Link

Seat heater for front left seat does not operate

Seat heater switch LH

Terminals of ECU

Wire harness or connector

-

Front seat cushion heater assembly LH

Front seatback heater assembly LH

Power distribution box assembly

Seat heater for front right seat does not operate

Seat heater switch RH

Terminals of ECU

Wire harness or connector

-

Front seat cushion heater assembly RH

Front seatback heater assembly RH

Power distribution box assembly

    Operation Check

    OPERATION CHECK CHECK FRONT SEAT HEATER (a) for LH Side: (1) Turn the ignition switch to ON. (2) Set the seat heater switch LH to "HI" or "LO" and check that the seat heater operates...

    Terminals Of Ecu

    TERMINALS OF ECU CHECK POWER DISTRIBUTION BOX ASSEMBLY (a) Remove the power distribution box assembly. Click here (b) Reconnect the power distribution box assembly connectors...

    Other information:

    Toyota Yaris XP210 (2020-2026) Reapir and Service Manual: On-vehicle Inspection


    ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT DRIVER SEAT BELT WARNING LIGHT HINT: The seat belt warning light on the combination meter assembly is used for both the driver seat and front passenger seat. (a) Turn the ignition switch to ON. (b) When the driver seat belt is not fastened, check that the seat belt warning light on the combination meter assembly illuminates...

    Toyota Yaris XP210 (2020-2026) Reapir and Service Manual: Power Steering ECU Communication Stop Mode


    DESCRIPTION Detection Item Symptom Trouble Area Power Steering ECU Communication Stop Mode Communication stop for "Power Steering (EPS)" is indicated on the "Communication Bus Check" screen of the GTS. Click here Power steering ECU assembly main line or connector Power source circuit of power steering ECU assembly Power steering ECU assembly ground circuit Power steering ECU assembly WIRING DIAGRAM CAUTION / NOTICE / HINT CAUTION: When performing the confirmation driving pattern, obey all speed limits and traffic laws...

    Categories

    Front Seat Belt Pretensioners

    The front seat belt pretensioners are designed to deploy in moderate or severe frontal, near frontal collisions.

    In addition, the pretensioners operate when a side collision or a rollover accident is detected. The pretensioners operate differently depending on what types of air bags are equipped. For more details about the seat belt pretensioner operation, refer to the SRS Air Bag Deployment Criteria.

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