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 |
| (See Air Mix Actuator) |
| Air conditioning compressor |
| (See A/C Compressor) |
| Air Intake Actuator |
| (See Air Intake Actuator) |
| Blower Motor Speed |
| (See Blower Motor) |
| Air Flow Mode Actuator |
| (See Airflow Mode Actuator) |
| Illumination of All Indicator Lights |
| (See Indicator Light) |
1. Connect the M-MDS to the DLC-2.
2. Switch the ignition ON.
3. After the vehicle is identified, select the following items from the initial screen of the M-MDS.a. Select the “Body”.b. 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 | Air mix actuator | Airflow mode actuator | Blower speed | Magnet clutch | Air intake actuator |
| 1 | 0 % | VENT | 3rd | ON | FRESH |
| 2 | 50 % |
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| 3 | 100 % |
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| 4 | 50 % |
| Step | Temperature (°C {°F}) | Airflow mode | Blower volume | A/C | A/C switch indicator light | Recirculate switch indicator light | Fresh switch indicator light |
| 1 | 20.0 {68} |
|
| Displayed | Illuminated | Not illuminated | Illuminated |
| 2 | 20.5 {68.9} |
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| 3 | 21.0 {70} |
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| 4 | 20.5 {68.9} |
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.
1. Connect the M-MDS to the DLC-2.
2. Switch the ignition ON.
3. After the vehicle is identified, select the following items from the initial screen of the M-MDS.a. Select the “Body”.b. 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 | Air mix actuator | Airflow mode actuator | Blower speed | Magnet clutch | Air intake actuator |
| 1 | 0 % | VENT | 5th | ON | FRESH |
| 2 | OFF |
| Step | Temperature (°C {°F}) | Airflow mode | Blower volume | A/C | A/C switch indicator light | Recirculate switch indicator light | Fresh switch indicator light |
| 1 | 8 {46} |
|
| Displayed | Illuminated | Not illuminated | Illuminated |
| 2 | Not displayed | Not illuminated |
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.
1. Connect the M-MDS to the DLC-2.
2. Switch the ignition ON.
3. After the vehicle is identified, select the following items from the initial screen of the M-MDS.a. Select the “Body”.b. 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 | Air mix actuator | Airflow mode actuator | Blower speed | Magnet clutch | Air intake actuator |
| 1 | 0 % | VENT | 3rd | ON | FRESH |
| 2 | RECIRCULATE |
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| 3 | OFF | FRESH |
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| 4 | RECIRCULATE |
| Step | Temperature (°C {°F}) | Airflow mode | Blower volume | A/C | A/C switch indicator light | Recirculate switch indicator light | Fresh switch indicator light |
| 1 | 4 {39} |
|
| Displayed | Illuminated | Not illuminated | Illuminated |
| 2 | Illuminated | Not illuminated |
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| 3 | Not displayed | Not illuminated | Not illuminated | Illuminated |
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| 4 | Illuminated | Not illuminated |
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.
1. Connect the M-MDS to the DLC-2.
2. Switch the ignition ON.
3. After the vehicle is identified, select the following items from the initial screen of the M-MDS.a. Select the “Body”.b. 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 | Air mix actuator | Airflow mode actuator | Blower speed | Magnet clutch | Air intake actuator |
| 1 | 50 % | VENT | OFF | OFF | FRESH |
| 2 | 1st | ON |
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| 3 | 3rd |
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| 4 | 5th |
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| 5 | 7th |
| Step | Temperature (°C {°F}) | Airflow mode | Blower volume | A/C | A/C switch indicator light | Recirculate switch indicator light | Fresh switch indicator light |
| 1 | 1 {34} |
| Not displayed | Not displayed | Not illuminated | Not illuminated | Illuminated |
| 2 |
| Displayed | Illuminated |
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| 3 |
|
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| 4 |
|
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| 5 |
|
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.
1. Connect the M-MDS to the DLC-2.
2. Switch the ignition ON.
3. After the vehicle is identified, select the following items from the initial screen of the M-MDS.a. Select the “Body”.b. 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 | Air mix actuator | Airflow mode actuator | Blower speed | Magnet clutch | Air intake actuator |
| 1 | 50 % | VENT | 3rd | ON | FRESH |
| 2 | BI-LEVEL |
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| 3 | HEAT |
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| 4 | DEF/HEAT |
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| 5 | DEFROSTER |
| Step | Temperature (°C {°F}) | Airflow mode | Blower volume | A/C | A/C switch indicator light | Recirculate switch indicator light | Fresh switch indicator light |
| 1 | 3 {37} |
|
| Displayed | Illuminated | Not illuminated | Illuminated |
| 2 |
|
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| 3 |
|
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| 4 |
|
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| 5 |
|
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.
1. Connect the M-MDS to the DLC-2.
2. Switch the ignition ON (engine off).
3. After the vehicle is identified, select the following items from the initial screen of the M-MDS.a. Select the “Body”.b. 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 | Air mix actuator | Airflow mode actuator | Blower speed | Magnet clutch | Air intake actuator |
| — | 50 % | VENT | OFF | OFF | FRESH |
| Step | Temperature (°C {°F}) | Airflow mode | Blower volume | A/C | A/C switch indicator light | Recirculate switch indicator light | Fresh switch indicator light |
| — | All indicator displayed | Illuminated | Illuminated | Illuminated |
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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 | Air mix actuator | Airflow mode actuator | Blower speed | Magnet clutch | Air intake actuator |
| — | 50 % | VENT | OFF | OFF | FRESH |
| Step | Temperature (°C {°F}) | Airflow mode | Blower volume | A/C | A/C switch indicator light | Recirculate switch indicator light | Fresh switch indicator light |
| — | 0 {32} |
| Not displayed | Not displayed | Not illuminated | Not illuminated | Illuminated |
