Toyota Sienna Service Manual: Rear blower resistor
ON-VEHICLE INSPECTION
1. INSPECT REAR BLOWER MOTOR CONTROLLER
(a) Measure resistance according to the value(s) in the table below..
Standard resistance 
If the resistance is not as specified, replace the rear blower motor controller.
(b) Inspect the rear blower motor controller.
(1) Connect the positive (+) lead to terminal 3 through a 12 V to 3.4 W test bulb and negative (-) lead to terminal 1.
(2) Connect the three 1.5 V dry cell batteries' positive (+) lead to terminal 2, and the negative (-) lead to terminal 1. Then check that the test bulb comes on.
OK: The test bulb comes on.
If operation is not as specified, replace the rear blower motor controller.
For rear air conditioning system
ON-VEHICLE INSPECTION
1. INSPECT REAR AIR MIX CONTROL SERVO MOTOR
(a) Inspect servo motor operation.
(1) Connect the positive (+) lead from the battery
to terminal 4 and negative (-) lead to ...
Compressor and magnetic clutch
COMPONENTS
...
Other materials:
Fail-safe chart
HINT:
If the following conditions are detected while the cruise
control is in operation, the system clears the stored vehicle
speed in the ECM and cancels the cruise control operation.
Vehicle Condition
Auto Cancel Condition
Re-operation Condition
CRUISE main in ...
Cooling fan motor
On-vehicle inspection
1. No. 1 Cooling fan motor
(A) check that the motor turns smoothly when the
battery is connected to the fan motor connector.
(B) measure the current while the motor is turning.
Standard current:
11.8 To 14.8 A at 20°c (68°f)
if the result is not as specified, r ...
Fail-safe chart
1. FAIL-SAFE
This function minimizes the loss of the ECT functions
when any malfunction occurs in a sensor or solenoid.
(a) ATF (Automatic Transmission Fluid) temperature
sensor:
When the ATF temperature sensor has a
malfunction, 5th upshift is prohibited.
(b) Counter gear speed sensor NC ...
