Toyota Sienna Service Manual: Room temperature sensor (for rear air conditioning system)
ON-VEHICLE INSPECTION
1. INSPECT REAR A/C ROOM TEMPERATURE SENSOR
(a) Remove the rear A/C room temperature sensor.
(b) Disconnect the connector from the rear A/C room temperature sensor.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance
NOTICE:
- Even slightly touching the sensor may change the resistance value. Be sure to hold the connector of the sensor
- When measuring, the sensor temperature must be the same as the ambient temperature.
HINT: As the temperature increases, the resistance decreases (see the graph).
If the resistance is not as specified, replace the rear A/C room temperature sensor.
Room temperature sensor
On-vehicle inspection
1. INSPECT A/C ROOM TEMPERATURE SENSOR
(a) Remove the A/C room temperature sensor.
(b) Measure the resistance according to the value(s) in
the table below.
Standard re ...
Ambient temperature sensor
ON-VEHICLE INSPECTION
1. INSPECT A/C AMBIENT TEMPERATURE SENSOR
(a) Remove the A/C ambient temperature sensor.
(b) Disconnect the connector from A/C ambient
temperature sensor.
(c) Measur ...
Other materials:
No. 1 Clearance Warning Buzzer Circuit
DESCRIPTION
The clearance warning ECU receives the ultrasonic sensor signal to sound the
front warning buzzer.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 INSPECT FRONT BUZZER
Remove the clearance warning ECU with front buzzer.
Apply the battery voltage to the terminals 1 and 2 o ...
DTC check / clear
1. CHECK DTC (USING INTELLIGENT TESTER)
Checking DTCs.
Connect the intelligent tester to the DLC3.
Turn the ignition switch ON.
Read DTCs by following the prompts on the
tester screen.
HINT:
Refer to the intelligent tester operator's manual
for further details.
2. CLEAR DTC ...
Lubrication system
On-vehicle inspection
1. CHECK ENGINE OIL LEVEL
(a) Warm up the engine, stop it and wait 5 minutes. The
oil level should be between the dipstick's low level
mark and full level mark.
If the engine oil level is low, check for leakage and
add oil up to the full level mark.
NOTICE:
D ...
