Sienna FWD V6-3.3L (3MZ-FE) (2006)
Blower Motor Resistor: Testing and Inspection
Rear Blower Resistor Manual A/C
ON-VEHICLE INSPECTION
1. INSPECT BLOWER RESISTOR TRANSISTOR ASSEMBLY (for Manual Air Conditioning System)
a. Measure resistance between terminals 3 and 4.
Resistance: 2.0 to 2.4 kOhms
If resistance is not as specified, replace the blower resistor transistor assembly.
b. Inspect blower resistor transistor assembly.
1. Connect the positive (-) lead to terminal 4 through a 12 V to 3.4 W test bulb and negative (-) lead to terminal 2.
2. Check the test bulb lights up when another positive (+) lead is connected to terminal 2 through a 12 V to 3.4 W test bulb.
If operation is not as specified, replace the blower resistor transistor assembly.