Toyota Sienna Service Manual: Multiplex communication

Sliding roof switch assembly

ON-VEHICLE INSPECTION 1. INSPECT SLIDING ROOF SWITCH ASSEMBLY Remove the switch. Check the resistance between the terminals when operating the switch. Resistance If the result is no ...

Multiplex communication system

PARTS LOCATION ...

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Front passenger side power window switch
Inspection 1. INSPECT POWER WINDOW REGULATOR SWITCH ASSEMBLY  Check the resistance between the switch terminals when the switch is operated. Standard If the result is not as specified, replace the switch assembly. ...

Indicator Circuit
DESCRIPTION This system has two indicator lights. One of the indicator lights is built into the fold seat switch. This indicator light receives power from the fold seat control ECU. It comes on or blinks when the system detects that an object is caught or when the seat operation conditions ar ...

Engine Coolant Temperature Circuit
DESCRIPTION A thermistor is built into the Engine Coolant Temperature (ECT) sensor, of which the resistance value varies according to the ECT. The structure of the sensor and its connection to the ECM are the same as those of the Intake Air Temperature (IAT) sensor. HINT: When any ...