Toyota Sienna Service Manual: For rear air conditioning system)
ON-VEHICLE INSPECTION
1. INSPECT COOLING UNIT MOTOR SUB-ASSEMBLY WITH FAN
(a) Connect the positive (+) lead from the battery to terminal 1 and negative (-) to terminal 2, then check that the motor operates smoothly.
If operation is not as specified, replace the rear blower motor.
Blower motor
On-vehicle inspection
1. INSPECT BLOWER WITH FAN MOTOR SUBASSEMBLY
(a) Connect the positive (+) lead from the battery to
terminal 2 and negative (-) to terminal 1, then check
that the motor op ...
For manual air conditioning system
ON-VEHICLE INSPECTION
1. INSPECT BLOWER RESISTOR (for Manual Air Conditioning System)
(a) Measure resistance between terminals, as shown in
the table.
If resistance is not as specified, replac ...
Other materials:
Problem symptoms table
If there are no DTCs output but the problem still occurs,
check the circuits for each problem symptom in the order
given in the table below and proceed to the relevant
troubleshooting page.
NOTICE:
When replacing the brake actuator assembly, sensor,
etc., turn the ignition switch off.
HINT:
...
For front passenger side
ON-VEHICLE INSPECTION
1. INSPECT AIR MIX CONTROL SERVO MOTOR
(a) Remove the air mix control servo motor.
(b) Connect the positive (+) lead from the battery to
terminal 4 and negative (-) lead to terminal 5, then
check that the lever turns to "COOL" side smoothly.
(c) Connect ...
Mass air flow meter
COMPONENTS
ON-VEHICLE INSPECTION
1. INSPECT MASS AIR FLOW METER
NOTICE:
Perform the mass air flow (MAF) meter inspection
by following the procedures below.
Only replace the MAF meter when the MAF value
in the DATA LIST (with the engine stopped) are
not within th ...
