AIR MIX ACTUATOR INSPECTION

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Caution

• If the lever position exceeds the operation range shown in the figure, the circuit in the actuator could be damaged. Always perform an actuator operation inspection with the lever movement within the range shown in the figure.

L.H.D.:

Driver-side

1. Disconnect the negative battery cable. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.)

2. Remove the following parts:

(1) Driver-side side wall (See SIDE WALL REMOVAL/INSTALLATION.)

(2) Driver-side front heat duct (See FRONT HEAT DUCT REMOVAL/INSTALLATION.)

3. Remove the driver-side air mix actuator. (See AIR MIX ACTUATOR REMOVAL/INSTALLATION.)

4. Apply battery positive voltage and connect the ground to the air mix actuator terminals as indicated in the table below and verify the operation condition.

Terminal

Air mix actuator operation

B

C

B+

Ground

COLD → HOT

Ground

B+

HOT → COLD

Terminal	Air mix actuator operation
B+	Ground	COLD → HOT
Ground	B+	HOT → COLD

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5. Verify that the resistance between terminals F and G, E and F matches the air mix actuator operation as shown in the graph.

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• If the operation condition and resistance are not normal, replace the air mix actuator. (See AIR MIX ACTUATOR REMOVAL/INSTALLATION.)

Passenger-side

1. Disconnect the negative battery cable. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.)

2. Remove the following parts:

(1) Glove compartment (See GLOVE COMPARTMENT REMOVAL/INSTALLATION.)

(2) Dashboard under cover (See DASHBOARD UNDER COVER REMOVAL/INSTALLATION.)

(3) Passenger-side side wall (See SIDE WALL REMOVAL/INSTALLATION.)

(4) Passenger-side front heat duct (See FRONT HEAT DUCT REMOVAL/INSTALLATION.)

3. Remove the passenger-side air mix actuator. (See AIR MIX ACTUATOR REMOVAL/INSTALLATION.)

4. Apply battery positive voltage and connect the ground to the air mix actuator terminals as indicated in the table below and verify the operation condition.

Terminal

Air mix actuator operation

B

C

B+

Ground

HOT → COLD

Ground

B+

COLD → HOT

Terminal	Air mix actuator operation
B+	Ground	HOT → COLD
Ground	B+	COLD → HOT

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5. Verify that the resistance between terminals F and G, E and F matches the air mix actuator operation as shown in the graph.

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• If the operation condition and resistance are not normal, replace the air mix actuator. (See AIR MIX ACTUATOR REMOVAL/INSTALLATION.)

R.H.D.:

Driver-side

1. Disconnect the negative battery cable. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.)

2. Remove the following parts:

(1) Driver-side side wall (See SIDE WALL REMOVAL/INSTALLATION.)

(2) Driver-side front heat duct (See FRONT HEAT DUCT REMOVAL/INSTALLATION.)

3. Remove the driver-side air mix actuator. (See AIR MIX ACTUATOR REMOVAL/INSTALLATION.)

4. Apply battery positive voltage and connect the ground to the air mix actuator terminals as indicated in the table below and verify the operation condition.

Terminal

Air mix actuator operation

B

C

B+

Ground

HOT → COLD

Ground

B+

COLD → HOT

Terminal	Air mix actuator operation
B+	Ground	HOT → COLD
Ground	B+	COLD → HOT

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5. Verify that the resistance between terminals F and G, E and F matches the air mix actuator operation as shown in the graph.

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• If the operation condition and resistance are not normal, replace the air mix actuator. (See AIR MIX ACTUATOR REMOVAL/INSTALLATION.)

Passenger-side

1. Disconnect the negative battery cable. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.)

2. Remove the following parts:

(1) Glove compartment (See GLOVE COMPARTMENT REMOVAL/INSTALLATION.)

(2) Dashboard under cover (See DASHBOARD UNDER COVER REMOVAL/INSTALLATION.)

(3) Passenger-side side wall (See SIDE WALL REMOVAL/INSTALLATION.)

(4) Passenger-side front heat duct (See FRONT HEAT DUCT REMOVAL/INSTALLATION.)

3. Remove the passenger-side air mix actuator. (See AIR MIX ACTUATOR REMOVAL/INSTALLATION.)

4. Apply battery positive voltage and connect the ground to the air mix actuator terminals as indicated in the table below and verify the operation condition.

Terminal

Air mix actuator operation

B

C

B+

Ground

COLD → HOT

Ground

B+

HOT → COLD

Terminal	Air mix actuator operation
B+	Ground	COLD → HOT
Ground	B+	HOT → COLD

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5. Verify that the resistance between terminals F and G, E and F matches the air mix actuator operation as shown in the graph.

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• If the operation condition and resistance are not normal, replace the air mix actuator. (See AIR MIX ACTUATOR REMOVAL/INSTALLATION.)