Toyota Yaris: Seat Heater System / Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
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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.
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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 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 CHECK POWER DISTRIBUTION BOX ASSEMBLY
(a) Remove the power distribution box assembly. Click here
(b) Reconnect the power distribution box assembly connectors...
Other information:
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...
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
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.
read more