Toyota Sienna Service Manual: Seat heater system

ECU Power Source Circuit

DESCRIPTION The position control ECU and switch assembly (power seat control switch and ECU) is contained in the switch assembly. During manual operation, only one switch signal is accepted. If ...

Problem symptoms table

HINT: Use the table below to help determine the cause of the problem symptom. The potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of th ...

Other materials:

Open in Front Pretensioner Squib LH Circuit
DTC B0136/74 Open in Front Pretensioner Squib LH Circuit DESCRIPTION The front pretensioner squib LH circuit consists of the center airbag sensor assembly and the front seat outer belt assembly LH. This circuit instructs the SRS to deploy when deployment conditions are met. DTC B0136/74 i ...

Power Back Door does not Operate
DESCRIPTION The power back door operates only when the power back door main switch is ON. The power back door ECU controls the power back door by activating the back door motor (built into the power back door drive unit) to open / close the back door. A request signal from the satell ...

Oxygen Sensor Circuit
HINT: Sensor 2 refers to the sensor mounted behind the Three-Way Catalytic Converter (TWC) and located far from the engine assembly. DESCRIPTION A three-way catalytic converter (TWC) is used in order to convert the carbon monoxide (CO), hydro carbon (HC), and nitrogen oxides (HOx) into ...