Toyota Sienna Service Manual: Headlight relay

Back door courtesy switch

INSPECTION 1. BACK DOOR LOCK ASSEMBLY (WITH OUT POWER BACK DOOR)  Inspect back door courtesy light switch operation.  Check that there is resistance between the terminal 5 a ...

Daytime running light relay

ON-VEHICLE INSPECTION 1. RUNNING LIGHT RELAY  Inspect relay resistance. Resistance ...

Other materials:

Engine Coolant Temperature Circuit
DTC P0115 Engine Coolant Temperature Circuit DTC P0117 Engine Coolant Temperature Circuit Low Input DTC P0118 Engine Coolant Temperature Circuit High Input DESCRIPTION A thermistor is built into the Engine Coolant Temperature (ECT) sensor, of which the resistance value varies according to the ...

Laser Sensor Power Source Circuit
DESCRIPTION This circuit provides power to the laser sensor. The laser sensor emits radio waves towards an object in front and measures the distance and direction of the object by receiving the beam reflections. Based on the reflections, the sensor calculates the difference in speed between t ...

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 ...