Toyota RAV4 manuals

Toyota Sienna Service Manual: Rear Air Mix Damper Control Servo Motor Circuit

DESCRIPTION

The rear air mix control servo motor (water valve servo motor) is controlled by the A/C amplifier.

The rear air mix control servo motor moves the air mix damper by rotating (normal, reverse) with electrical power from the A/C amplifier.

WIRING DIAGRAM

Rear Air Mix Damper Control Servo Motor Circuit

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 items in the DATA LIST, and read the display on the intelligent tester.

DATA LIST / AIR CONDITIONER

OK: When the target position is "MAX. COOL" (0%), the actual opening angle is 19.0% or less.

When the target position is "MAX. HOT" (86.5%), the actual opening angle is 81.0% or more.

Result

2 PERFORM ACTIVE TEST BY 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 ACTIVE TEST and then check the air flow temperature by hand.

ACTIVE TEST / AIR CONDITIONER

OK: When the lever is moved to the "MAX. HOT" side, warm air comes out.

When the lever is moved to the "MAX. COOL" side, cool air comes out.

Result

3 PERFORM ACTUATOR CHECK

(a) Enter the actuator check mode (See page AC-15).

(b) Press the DEF switch and change to the step operation.

(c) Check the air flow temperature by hand.

PERFORM ACTUATOR CHECK

OK: Air flow temperature changes in accordance with each display code.

Result

4 INSPECT REAR AIR MIX CONTROL SERVO MOTOR (WATER VALVE SERVO MOTOR)

 INSPECT REAR AIR MIX CONTROL SERVO MOTOR (WATER VALVE SERVO MOTOR)

(a) Remove the rear air mix control servo motor (water valve servo motor).

(b) Disconnect the connector from the rear air mix control servo motor.

(c) Connect the positive (+) lead from the battery to terminal 5 and the negative (-) lead to terminal 4, then check that the lever turns to the "MAX. COOL" position smoothly.

OK: Lever turns to "MAX. COOL" position smoothly.

(d) Connect the positive (+) lead from the battery to terminal 4 and the negative (-) lead to terminal 5, then check that the lever turns to the "MAX. HOT" position smoothly.

OK: Lever turns to "MAX. HOT" position smoothly.

5 CHECK HARNESS AND CONNECTOR (REAR AIR MIX CONTROL SERVO MOTOR - A/C AMPLIFIER)

CHECK HARNESS AND CONNECTOR (REAR AIR MIX CONTROL SERVO MOTOR - A/C AMPLIFIER)

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

CHECK HARNESS AND CONNECTOR (REAR AIR MIX CONTROL SERVO MOTOR - A/C AMPLIFIER)

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

Standard resistance

REPLACE A/C AMPLIFIER

Air Mix Damper Control Servo Motor Circuit (Driver Side)
DESCRIPTION The air mix control servo motor (air mix damper servo sub-assembly) is controlled by the A/C amplifier. The air mix control servo motor moves the air mix damper by rotating (normal, ...

Rear Air Outlet Damper Control Servo Motor Circuit
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Other materials:

Road test
1. PROBLEM SYMPTOM CONFIRMATION  Inspect the SET function.  Turn the cruise control main switch on.  Drive at the required speed between 40 km/h (25 mph) and 200 km/h (125 mph).  Push the cruise control main switch to - (COAST)/SET.  After releasing t ...

Check mode procedure
1. CHECK MODE (SIGNAL CHECK): DTC CHECK  Connect the intelligent tester to the DLC3. ) Turn the ignition switch to the ON position. ) Select the "SIGNAL CHECK", and proceed checking using the intelligent tester. NOTICE: Select the "SIGNAL CHECK" from the &q ...

Freeze frame data
1. DESCRIPTION (a) The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the a ...

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