A/C OPERATION CHECK MODE [CLIMATE CONTROL UNIT (FULL-AUTO AIR CONDITIONER)]

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Note

• There are two types of front climate control unit, type A and type B.

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• The A/C operation check mode forcibly operates the output devices as shown in the operation check table regardless of the signals input to the climate control unit.

• During an A/C operation check mode operation, indication in the display panel and the illumination of the indicator light on the switches are automatically controlled.

• Determine the malfunctioning part by visual inspection, listening to the operation sound, placing a hand on the air vents, or checking that each transition is as indicated in the operation check table.

M-MDS display	Target part	Reference
Air Mix Actuator	• Front air Mix Actuator • Front air mix door	(See Front air mix actuator)
Air conditioning compressor	• A/C compressor	(See A/C compressor)
Air Intake Actuator	• Air intake actuator • Air intake door	(See Air intake actuator)
Blower Motor Speed	• Front blower motor	(See Front blower motor)
Airflow Mode Actuator	• Front airflow mode actuator • Front airflow mode door	(See Front airflow mode actuator)
Illumination Of All Indicator Lights	• Climate control unit	(See Indicator light)

Note

• “Electrical Water Pump”, “Rear Vent Actuator” and “Rear Blower Motor Speed” are displayed in the M-MDS but they do not operate.

Front air mix actuator

1. Connect the M-MDS to the DLC-2.

2. Switch the ignition ON (engine on).

3. After the vehicle is identified, select the following items from the initial screen of the M-MDS.

(1) Select the “Body”.

(2) Select the “EATC Operation Check”.

4. Select the “Air Mix Actuator” from the screen menu.

5. Verify the A/C operation check mode according to the directions on the screen.

6. Select “Stop” to stop the A/C operation check. (See A/C operation check stop.)

Operation

Step	Front air mix actuator	Front airflow mode actuator	Front blower speed	Magnet clutch	Air intake actuator	Rear air mix actuator	Rear airflow mode actuator	Rear blower speed
1	0 %	VENT	5th	ON	FRESH	0 %	VENT	5th
2	100 %	VENT	5th	ON	FRESH	100 %	VENT	5th

Display

Step	Front climate control unit							Rear climate control unit
Step	Temperature (°C {°F})	Airflow mode	Blower volume	A/C	Recirculate switch indicator light	Power switch indicator light^*1	Other indicator lights	Temperature (°C {°F})	Airflow mode	Blower volume	AUTO	SYNC
1	20.0 {68}			Displayed	Not illuminated	Illuminated	Not illuminated	20.0 {68}			Not displayed	Not displayed
2	21.0 {70}			Displayed	Not illuminated	Illuminated	Not illuminated	21.0 {70}			Not displayed	Not displayed

*1 :Front climate control unit type B

Note

• After approx. 22 s have elapsed, the operation step moves to the next step.

• When the last step is finished, the operation is repeated from Step 1.

• To prevent super-cooling, the magnetic clutch turns off despite the A/C forced override.

A/C compressor

1. Connect the M-MDS to the DLC-2.

2. Switch the ignition ON (engine on).

3. After the vehicle is identified, select the following items from the initial screen of the M-MDS.

(1) Select the “Body”.

(2) Select the “EATC Operation Check”.

4. Select the “Air conditioning compressor” from the screen menu.

5. Verify the A/C operation check mode according to the directions on the screen.

6. Select “Stop” to stop the A/C operation check. (See A/C operation check stop.)

Operation

Step	Front air mix actuator	Front airflow mode actuator	Front blower speed	Magnet clutch	Air intake actuator	Rear air mix actuator	Rear airflow mode actuator	Rear blower speed
1	0 %	VENT	5th	ON	FRESH	50 %	VENT	Off
2	0 %	VENT	5th	OFF	FRESH	50 %	VENT	Off

Display

Step	Front climate control unit							Rear climate control unit
Step	Temperature (°C {°F})	Airflow mode	Blower volume	A/C	Recirculate switch indicator light	Power switch indicator light^*2	Other indicator lights	Temperature (°C {°F})	Airflow mode	Blower volume	AUTO	SYNC
1	4 {39}^1 8 {46}^2			Displayed	Not illuminated	Illuminated	Not illuminated	Not displayed
2	4 {39}^1 8 {46}^2			Not displayed	Not illuminated	Illuminated	Not illuminated	Not displayed

*1 :Front climate control unit type A

*2 :Front climate control unit type B

Note

• After the following times have elapsed, the operation step moves to the next step.

? Step 1: Approx. 5 s

? Step 2: Approx. 25 s

• When the last step is finished, the operation is repeated from Step 1.

Air intake actuator

1. Connect the M-MDS to the DLC-2.

2. Switch the ignition ON (engine on).

3. After the vehicle is identified, select the following items from the initial screen of the M-MDS.

(1) Select the “Body”.

(2) Select the “EATC Operation Check”.

4. Select the “Air Intake Actuator” from the screen menu.

5. Verify the A/C operation check mode according to the directions on the screen.

6. Select “Stop” to stop the A/C operation check. (See A/C operation check stop.)

Operation

Step	Front air mix actuator	Front airflow mode actuator	Front blower speed	Magnet clutch	Air intake actuator	Rear air mix actuator	Rear airflow mode actuator	Rear blower speed
1	0 %	VENT	5th	ON	FRESH	50 %	VENT	Off
2					RECIRCULATE (25%)
3					RECIRCULATE (50%)
4					RECIRCULATE (75%)
5					RECIRCULATE (100%)
6				OFF	RECIRCULATE (75%)
7					RECIRCULATE (50%)
8					RECIRCULATE (25%)
9					FRESH

Display

Step	Front climate control unit							Rear climate control unit
Step	Temperature (°C {°F})	Airflow mode	Blower volume	A/C	Recirculate switch indicator light	Power switch indicator light^*1	Other indicator lights	Temperature (°C {°F})	Airflow mode	Blower volume	AUTO	SYNC
1	4 {39}			Displayed	Not illuminated	Illuminated	Not illuminated	Not displayed
2					Illuminated
3
4
5
6				Not displayed	Not illuminated
7					Illuminated
8
9

*1 :Front climate control unit type B

Note

• After approx. 2 s have elapsed, the operation step moves to the next step.

• When the last step is finished, the operation is repeated from Step 1.

• To prevent super-cooling, the magnetic clutch turns off despite the A/C forced override.

Front blower motor

1. Connect the M-MDS to the DLC-2.

2. Switch the ignition ON (engine on).

3. After the vehicle is identified, select the following items from the initial screen of the M-MDS.

(1) Select the “Body”.

(2) Select the “EATC Operation Check”.

4. Select the “Blower Motor Speed” from the screen menu.

5. Verify the A/C operation check mode according to the directions on the screen.

6. Select “Stop” to stop the A/C operation check. (See A/C operation check stop.)

Operation

Step	Front air mix actuator	Front airflow mode actuator	Front blower speed	Magnet clutch	Air intake actuator	Rear air mix actuator	Rear airflow mode actuator	Rear blower speed
1	50 %	VENT	OFF	OFF	FRESH	50 %	VENT	OFF
2			1st	ON				1st
3			3rd					3rd
4			5th					5th
5			7th					5th

Display

Step	Front climate control unit							Rear climate control unit
Step	Temperature (°C {°F})	Airflow mode	Blower volume	A/C	Recirculate switch indicator light	Power switch indicator light^*1	Other indicator lights	Temperature (°C {°F})	Airflow mode	Blower volume	AUTO	SYNC
1	1 {34}		Not displayed	Not displayed	Not illuminated	Not illuminated	Not illuminated	1 {34}		Not displayed	Not displayed	Not displayed
2				Displayed		Illuminated
3
4
5

*1 :Front climate control unit type B

Note

• After approx. 4 s have elapsed, the operation step moves to the next step.

• When the last step is finished, the operation is repeated from Step 1.

• To prevent super-cooling, the magnetic clutch turns off despite the A/C forced override.

Front airflow mode actuator

1. Connect the M-MDS to the DLC-2.

2. Switch the ignition ON (engine on).

3. After the vehicle is identified, select the following items from the initial screen of the M-MDS.

(1) Select the “Body”.

(2) Select the “EATC Operation Check”.

4. Select the “Airflow Mode Actuator” from the screen menu.

5. Verify the A/C operation check mode according to the directions on the screen.

6. Select “Stop” to stop the A/C operation check. (See A/C operation check stop.)

Operation

Step	Front air mix actuator	Front airflow mode actuator	Front blower speed	Magnet clutch	Air intake actuator	Rear air mix actuator	Rear airflow mode actuator	Rear blower speed
1	50 %	VENT	5th	ON	FRESH	50 %	VENT	5th
2		BI-LEVEL					BI-LEVEL
3		HEAT					HEAT
4		DEF/HEAT					HEAT
5		DEFROSTER					HEAT

Display

Step	Front climate control unit							Rear climate control unit
Step	Temperature (°C {°F})	Airflow mode	Blower volume	A/C	Recirculate switch indicator light	Power switch indicator light^*1	Other indicator lights	Temperature (°C {°F})	Airflow mode	Blower volume	AUTO	SYNC
1	3 {37}			Displayed	Not illuminated	Illuminated	Not illuminated	3 {37}			Not displayed	Not displayed
2
3
4
5

*1 :Front climate control unit type B

Note

• After approx. 11 s have elapsed, the operation step moves to the next step.

• When the last step is finished, the operation is repeated from Step 1.

• To prevent super-cooling, the magnetic clutch turns off despite the A/C forced override.

Indicator light

1. Connect the M-MDS to the DLC-2.

2. Switch the ignition ON (engine on).

3. After the vehicle is identified, select the following items from the initial screen of the M-MDS.

(1) Select the “Body”.

(2) Select the “EATC Operation Check”.

4. Select the “Illumination Of All Indicator Lights” from the screen menu.

5. Verify the A/C operation check mode according to the directions on the screen.

6. Select “Stop” to stop the A/C operation check. (See A/C operation check stop.)

Operation

Step	Front air mix actuator	Front airflow mode actuator	Front blower speed	Magnet clutch	Air intake actuator	Rear air mix actuator	Rear airflow mode actuator	Rear blower speed
—	50 %	VENT	OFF	OFF	FRESH	50 %	VENT	OFF

Display

Step	Front climate control unit							Rear climate control unit
Step	Temperature (°C {°F})	Airflow mode	Blower volume	A/C	Recirculate switch indicator light	Power switch indicator light^*1	Other indicator lights	Temperature (°C {°F})	Airflow mode	Blower volume	AUTO	SYNC
—	All indicator displayed				Illuminated	Illuminated	Illuminated	All indicator displayed

*1 :Front climate control unit type B

A/C operation check stop

1. If “Stop” is selected while the A/C operation check is operating, the A/C stops at the conditions shown in the table.

Operation

Step	Front air mix actuator	Front airflow mode actuator	Front blower speed	Magnet clutch	Air intake actuator	Rear air mix actuator	Rear airflow mode actuator	Rear blower speed
—	50 %	VENT	OFF	OFF	FRESH	50 %	VENT	OFF

Display

Step	Front climate control unit							Rear climate control unit
Step	Temperature (°C {°F})	Airflow mode	Blower volume	A/C	Recirculate switch indicator light	Power switch indicator light^*1	Other indicator lights	Temperature (°C {°F})	Airflow mode	Blower volume	AUTO	SYNC
—	0 {32}		Not displayed	Not displayed	Not illuminated	Not illuminated	Not illuminated	Not displayed

*1 :Front climate control unit type B