Toyota RAV4 manuals

Toyota Sienna Service Manual: Room Temperature Sensor Circuit

DESCRIPTION

This sensor detects the cabin temperature that is used as the basis for temperature control and sends a signal to the A/C amplifier.

WIRING DIAGRAM

INSPECTION PROCEDURE

1 READ VALUE OF INTELLIGENT TESTER

(a) Connect the intelligent tester to the DLC3.

(b) Turn the ignition switch to the ON position and turn the intelligent tester main switch on.

(c) Select the item below in the DATA LIST, and read the display on the intelligent tester.

DATA LIST / AIR CONDITIONER:

OK: The display is as specified in the normal condition column.

Result

2 INSPECT A/C ROOM TEMPERATURE SENSOR

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 resistance

NOTICE:

HINT: As the temperature increases, the resistance decreases (see the graph).

3 CHECK HARNESS AND CONNECTOR (A/C ROOM TEMPERATURE SENSOR - A/C AMPLIFIER)

CHECK HARNESS AND CONNECTOR (A/C ROOM TEMPERATURE SENSOR - A/C AMPLIFIER)

(a) Disconnect the connector from the A/C amplifier.

CHECK HARNESS AND CONNECTOR (A/C ROOM TEMPERATURE SENSOR - A/C AMPLIFIER)

(b) Disconnect the connector from the A/C room temperature sensor.

(c) Measure the resistance according to the value(s) in the table below.

Standard resistance

REPLACE A/C AMPLIFIER

Actuator check
1. ACTUATOR CHECK (a) After entering the DTC check mode (Sensor Check Mode), press the R/F switch. (b) As each damper, motor and relay automatically operate actuator check at 1-second interval ...

Ambient temperature sensor circuit
DTC B1412/12 Ambient Temperature Sensor Circuit DESCRIPTION The ambient temperature sensor is installed in front of the condenser to detect the ambient temperature which is used to control the ai ...

Other materials:

Removal
1. REMOVE REAR DOOR SCUFF PLATE LH 2. REMOVE REAR DOOR WEATHERSTRIP LH 3. REMOVE BACK DOOR WEATHERSTRIP 4. REMOVE BACK DOOR SCUFF PLATE 5. REMOVE QUARTER TRIM FRONT PANEL ASSEMBLY LH 6. REMOVE POWER POINT SOCKET ASSEMBLY  Release the 2 claw fittings and remove the power point soc ...

Disassembly
1. REMOVE REAR SEAT LEG COVER LH  Remove the 2 screws and seat leg cover. 2. REMOVE REAR SEAT LEG COVER RH  Remove the 2 screws and seat leg cover. 3. REMOVE REAR SEAT LEG SIDE COVER LH  Remove the 2 screws and leg side cover. 4. REMOVE LH SEAT REAR SEAT LOCK COVE ...

Terminals of ECU
1. CHECK POWER BACK DOOR ECU Disconnect the P13 and P14 ECU connectors, and check the voltage and resistance of each terminal of the wire harness side connectors If the result is not as specified, there may be a malfunction on the wire harness side.  Reconnect the ECU co ...

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