AIR FROM VENTS NOT COLD ENOUGH [FULL-AUTO AIR CONDITIONER]

Malfunction symptom	Heating not functioning effectively
Details	• Insufficient cooled-airflow even if airflow temperature setting is MAX COLD • Excessive time required to cool to set temperature
Possible Cause	Note • If the coolant temperature increases due to a cooling system malfunction, the fail-safe function disables the A/C operation. • Electric compressor malfunction • Blower unit or air filter clogging • Blower motor malfunction • Cooling fan operation malfunction • Active air shutter malfunction • Malfunction of 2way valve for refrigerant • Malfunction of 3way valve for refrigerant • A/C pressure sensor (motor room side) malfunction • A/C pressure sensor (high voltage battery side) malfunction • Evaporator temperature sensor malfunction • Poor evaporator temperature sensor installation • Malfunction of temperature sensor of refrigerant line for condenser outlet • Malfunction of temperature sensor of refrigerant line for evaporator outlet • Ambient temperature sensor malfunction • Cabin temperature sensor malfunction • Air mix actuator malfunction • Electric expansion valve malfunction • System piping malfunction ― Crushed piping ― Gas leakage from connecting area (improper installation, O-ring malfunction) • Condenser malfunction

Malfunction symptom

Heating not functioning effectively

Details

• Insufficient cooled-airflow even if airflow temperature setting is MAX COLD

• Excessive time required to cool to set temperature

Possible Cause

Note

• If the coolant temperature increases due to a cooling system malfunction, the fail-safe function disables the A/C operation.

• Electric compressor malfunction

• Blower unit or air filter clogging

• Blower motor malfunction

• Cooling fan operation malfunction

• Active air shutter malfunction

• Malfunction of 2way valve for refrigerant

• Malfunction of 3way valve for refrigerant

• A/C pressure sensor (motor room side) malfunction

• A/C pressure sensor (high voltage battery side) malfunction

• Evaporator temperature sensor malfunction

• Poor evaporator temperature sensor installation

• Malfunction of temperature sensor of refrigerant line for condenser outlet

• Malfunction of temperature sensor of refrigerant line for evaporator outlet

• Ambient temperature sensor malfunction

• Cabin temperature sensor malfunction

• Air mix actuator malfunction

• Electric expansion valve malfunction

• System piping malfunction

― Crushed piping

― Gas leakage from connecting area (improper installation, O-ring malfunction)

• Condenser malfunction

<<High voltage>>

• If necessary measures such as wearing the correct protective gear are not taken when inspecting or removing/installing the high voltage parts, it could cause electrical shock and result in serious injury or, in the worst case, death.

• Before inspecting or removing/installing the high voltage parts, refer to [HIGH VOLTAGE SERVICE CAUTIONS] in the general information and [High Voltage Part Inspection and Removal/Installation Notes] of the high voltage system service cautions and implement the necessary measures and preparations. (See HIGH VOLTAGE SERVICE CAUTIONS.) (See HIGH VOLTAGE SYSTEM SERVICE CAUTIONS.)

Step	Inspection	Action
1	VERIFY ELECTRIC COMPRESSOR OPERATION • Is the electric compressor operating when the airflow temperature is set to MAX COLD?	Yes	Go to the next step.
No	Go to the following malfunction symptom item. (See ELECTRIC COMPRESSOR DOES NOT OPERATE EVEN WITH MAX COLD SETTING [FULL-AUTO AIR CONDITIONER].)
2	INSPECT BLOWER UNIT AND AIR FILTER • Are the blower unit intake and air filter clogged? (See AIR FILTER INSPECTION.)	Yes	Remove the cause of the clogging. Replace the air filter if it is clogged. (See AIR FILTER REMOVAL/INSTALLATION.) After performing the repair, go to Step 17.
No	Go to the next step.
3	VERIFY BLOWER MOTOR OPERATION • Switch the main power ON (READY off or on). • Set the airflow volume control switch to ON. • Does the blower motor operate and does air flow from the vent?	Yes	Go to the next step.
No	Go to the following malfunction symptom item. (See AMOUNT OF AIR BLOWN FROM VENTS DOES NOT CHANGE [FULL-AUTO AIR CONDITIONER].)
4	VERIFY COOLING FAN OPERATION • Verify the cooling fan operation. (See COOLING FAN MOTOR INSPECTION.) • Is the cooling fan operation normal?	Yes	Go to the next step.
No	Repair or replace the malfunctioning location and perform the repair completion verification. (See COOLING FAN MOTOR REMOVAL/INSTALLATION.)
5	INSPECT ACTIVE AIR SHUTTER • Inspect the applicable part. (See ACTIVE AIR SHUTTER INSPECTION.) • Is the active air shutter normal?	Yes	Go to the next step.
No	Repair or replace the malfunctioning location and perform the repair completion verification. (See ACTIVE AIR SHUTTER REMOVAL/INSTALLATION.)
6	INSPECT REFRIGERANT PRESSURE • Inspect the refrigerant pressure. (See REFRIGERANT PRESSURE CHECK.) • Is the refrigerant pressure normal?	Yes	Go to the next step.
No	Record the inspection results. • If the refrigerant pressures on the high pressure and low pressure sides are both high, go to Step 7. • If the refrigerant pressure values on the high pressure and low pressure sides are both low, go to Step 21. • If the refrigerant pressure value on the low pressure side is initially normal, but it becomes a negative value after some time, perform vacuum discharging for 1 hour, charge the specified amount of the refrigerant, then perform the repair completion verification. • If the refrigerant pressure value on the low pressure side is constantly negative, go to Step 22. • If the refrigerant pressure on the high pressure side is low and the refrigerant pressure on the low pressure side is high, go to Step 23. • If the refrigerant pressure values on the high pressure and low pressure sides are both normal, go to Step 38. • If the refrigerant pressure on the high pressure side is normal and the refrigerant pressure on the low pressure side is high, go to Step 38. • If the refrigerant pressure on the high pressure side is high and the refrigerant pressure on the low pressure side is normal, go to Step 38. • If the refrigerant pressure on the high pressure side is low and the refrigerant pressure on the low pressure side is normal, go to Step 38.
7	VERIFY HIGH VOLTAGE BATTERY TEMPERATURE • Connect the M-MDS to the DLC-2. • Switch the main power ON. • Display the following PIDs using the M-MDS. (See PID/DATA MONITOR INSPECTION.) BECM ― [HV_BATT_TEMP_MAX] • Is PID [HV_BATT_TEMP_MAX] 40 °C {104 °F} or more?	Yes	Go to the next step.
No	Go to Step 9.
8	PERFORM HIGH VOLTAGE BATTERY COOLING • Connect the M-MDS to the DLC-2. • Switch the main power ON. • Select the following menu and perform the forced operation of the high voltage battery cooling system for 5 min. 1. Press [Start] to start the vehicle identification. 2. Press the [Toolbox] tab. 3. Press the [Work Support] icon. 4. Press [EV]. 5. Press [Run] for Compulsory operating Air Conditioner. 6. Select [Cooling for drive battery] and press [Next]. • Display the following PIDs using the M-MDS. (See PID/DATA MONITOR INSPECTION.) BECM ― [HV_BATT_TEMP_MAX] • Is PID [HV_BATT_TEMP_MAX] 40 °C {104 °F} or more?	Yes	Perform the inspection content in Step 8 until the temperature of the high voltage battery is 40 °C {104 °F} or less.
No	Go to the next step.
9	VERIFY OPERATION OF 2WAY VALVE FOR REFRIGERANT • Connect the M-MDS to the DLC-2. • Switch the main power ON. • Using the M-MDS, select the service support item [Self-Diagnosing Air Conditioner control valves] and inspect the 2way valve for refrigerant. Note • Because [Self-Diagnosing Air Conditioner control valves] cannot be performed if the ambient temperature is 15°C {59 °F} or less or 40 °C {104 °F} or more, go to Step 10 and inspect the 2way valve for refrigerant. 1. Press [Start] to start the vehicle identification. 2. Press the [Toolbox] tab. 3. Press the [Work Support] icon. 4. Press [EV]. 5. Press [Run] for Self-Diagnosing Air Conditioner control valves. 6. Select [2-way valve] and press [Next]. • Is [Normal] displayed as the diagnosis result?	Yes	Go to Step 11.
No	If [Abnormal] is displayedIf [Incomplete] is displayed • Repair or replace the malfunctioning location and perform the repair completion verification. (See HEAT PUMP VALVE COMPONENT No.2 REMOVAL/INSTALLATION.) • Go to the next step.
10	VERIFY OPERATION OF 2WAY VALVE FOR REFRIGERANT • Connect the M-MDS to the DLC-2. • Switch the main power ON. • Access the HP simulation item [2_WAY_VLV] using the M-MDS. (See SIMULATION INSPECTION.) • Switch the main power ON (READY on) • Turn the [2_WAY_VLV] PID to ON from OFF using the M-MDS simulation function. • is operation sound heard?	Yes	Go to the next step.
No	Repair or replace the malfunctioning location and perform the repair completion verification. (See HEAT PUMP VALVE COMPONENT No.2 REMOVAL/INSTALLATION.)
11	VERIFY OPERATION OF 3WAY VALVE FOR REFRIGERANT • Connect the M-MDS to the DLC-2. • Switch the main power ON. • Using the M-MDS, select the service support item [Self-Diagnosing Air Conditioner control valves] and inspect the 3way valve for refrigerant. Note • Because [Self-Diagnosing Air Conditioner control valves] cannot be performed if the ambient temperature is 15°C {59 °F} or less or 40 °C {104 °F} or more, go to Step 12 and inspect the 3way valve for refrigerant. 1. Press [Start] to start the vehicle identification. 2. Press the [Toolbox] tab. 3. Press the [Work Support] icon. 4. Press [EV]. 5. Press [Run] for Self-Diagnosing Air Conditioner control valves. 6. Select [3-way valve] and press [Next]. • Is [Normal] displayed as the diagnosis result?	Yes	Go to Step 13.
No	If [Abnormal] is displayedIf [Incomplete] is displayed • Repair or replace the malfunctioning location and perform the repair completion verification. (See HEAT PUMP VALVE COMPONENT No.1 REMOVAL/INSTALLATION.) • Go to the next step.
12	VERIFY OPERATION OF 3WAY VALVE FOR REFRIGERANT • Connect the M-MDS to the DLC-2. • Switch the main power ON. • Access the HP simulation item [3_WAY_VLV] using the M-MDS. (See SIMULATION INSPECTION.) • Switch the main power ON (READY on) • Turn the [3_WAY_VLV] PID to ON from OFF using the M-MDS simulation function. • is operation sound heard?	Yes	Go to the next step.
No	Repair or replace the malfunctioning location and perform the repair completion verification. (See HEAT PUMP VALVE COMPONENT No.1 REMOVAL/INSTALLATION.)
13	INSPECT REFRIGERANT PRESSURE SENSOR No.1 • Inspect the refrigerant pressure sensor No.1. (See REFRIGERANT PRESSURE SENSOR No.1 INSPECTION [FULL-AUTO AIR CONDITIONER].) • Is the refrigerant pressure sensor No.1 normal?	Yes	Go to the next step.
No	Repair or replace the malfunctioning location and perform the repair completion verification. (See REFRIGERANT PRESSURE SENSOR No.1 REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)
14	INSPECT REFRIGERANT PRESSURE SENSOR No.2 • Inspect the refrigerant pressure sensor No.2. (See REFRIGERANT PRESSURE SENSOR No.2 INSPECTION.) • Is the refrigerant pressure sensor No.2 normal?	Yes	Go to the next step.
No	Repair or replace the malfunctioning location and perform the repair completion verification. (See REFRIGERANT PRESSURE SENSOR No.2 REMOVAL/INSTALLATION.)
15	INSPECT EVAPORATOR TEMPERATURE SENSOR • Inspect the evaporator temperature sensor. (See EVAPORATOR TEMPERATURE SENSOR INSPECTION [FULL-AUTO AIR CONDITIONER].) • Is the evaporator temperature sensor normal?	Yes	Verify the evaporator temperature installation condition and repair the installation position. (See EVAPORATOR TEMPERATURE SENSOR REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].) Go to the next step.
No	Repair or replace the malfunctioning location and perform the repair completion verification. (See EVAPORATOR TEMPERATURE SENSOR REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)
16	INSPECT TEMPERATURE SENSOR OF REFRIGERANT LINE FOR CONDENSER OUTLET • Inspect the temperature sensor of refrigerant line for condenser outlet. (See TEMPERATURE SENSOR OF REFRIGERANT LINE FOR CONDENSER OUTLET INSPECTION [FULL-AUTO AIR CONDITIONER].) • Is the temperature sensor of refrigerant line for condenser outlet normal?	Yes	Go to the next step.
No	Repair or replace the malfunctioning location and perform the repair completion verification. (See TEMPERATURE SENSOR OF REFRIGERANT LINE FOR CONDENSER OUTLET REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)
17	INSPECT TEMPERATURE SENSOR OF REFRIGERANT LINE FOR EVAPORATOR OUTLET • Inspect the temperature sensor of refrigerant line for evaporator outlet. (See TEMPERATURE SENSOR OF REFRIGERANT LINE FOR EVAPORATOR OUTLET INSPECTION [FULL-AUTO AIR CONDITIONER].) • Is the temperature sensor of refrigerant line for evaporator outlet normal?	Yes	Go to the next step.
No	Repair or replace the malfunctioning location and perform the repair completion verification. (See TEMPERATURE SENSOR OF REFRIGERANT LINE FOR EVAPORATOR OUTLET REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)
18	INSPECT AMBIENT TEMPERATURE SENSOR • Inspect the ambient temperature sensor. (See AMBIENT TEMPERATURE SENSOR INSPECTION [FULL-AUTO AIR CONDITIONER].) • Is the ambient temperature sensor normal?	Yes	Go to the next step.
No	Repair or replace the malfunctioning location and perform the repair completion verification. (See AMBIENT TEMPERATURE SENSOR REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)
19	INSPECT PASSENGER COMPARTMENT TEMPERATURE SENSOR • Inspect the passenger compartment temperature sensor. (See PASSENGER COMPARTMENT TEMPERATURE SENSOR INSPECTION [FULL-AUTO AIR CONDITIONER].) • Is the passenger compartment temperature sensor normal?	Yes	Go to the next step.
No	Repair or replace the malfunctioning location and perform the repair completion verification. (See PASSENGER COMPARTMENT TEMPERATURE SENSOR REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)
20	INSPECT CONDENSER • Inspect the condenser. (See CONDENSER INSPECTION.) • Is the condenser normal?	Yes	Replace the refrigerant. After vacuum discharging for 15 min and charging with refrigerant to the specified level, perform the repair completion verification.
No	Repair or replace the malfunctioning location and perform the repair completion verification. (See CONDENSER REMOVAL/INSTALLATION.)
21	INSPECT SYSTEM PIPING • Inspect the system piping for gas leakage using the gas leak tester. (See REFRIGERANT CHARGING.) • Is the system piping normal?	Yes	Replace the high voltage battery and perform the repair completion verification. (See HIGH VOLTAGE BATTERY REMOVAL/INSTALLATION.)
No	Replace the O-ring of the malfunctioning location (system piping connecting area). Or replace the malfunctioning location of the system piping and perform the repair completion verification. (See FLEXIBLE HOSE REMOVAL/INSTALLATION.)(See FRONT COOLER PIPE REMOVAL/INSTALLATION.)(See REAR COOLER PIPE REMOVAL/INSTALLATION.)
22	INSPECT REFRIGERANT PRESSURE • Leave it for 5 min and then inspect the pressure performance again. • Is the refrigerant pressure value on the low pressure side initially normal and then it becomes a negative value after some time?	Yes	Replace the refrigerant. After vacuum discharging for 1 hour, charge the refrigerant to the specified level, then perform the repair completion verification.
No	Replace the electric expansion valve and perform the repair completion verification. (See HEAT PUMP VALVE COMPONENT No.1 REMOVAL/INSTALLATION.)
23	VERIFY HIGH VOLTAGE BATTERY TEMPERATURE • Connect the M-MDS to the DLC-2. • Switch the main power ON. • Display the following PIDs using the M-MDS. (See PID/DATA MONITOR INSPECTION.) BECM ― [HV_BATT_TEMP_MAX] • Is PID [HV_BATT_TEMP_MAX] 40 °C {104 °F} or more?	Yes	Go to the next step.
No	Go to Step 25.
24	PERFORM HIGH VOLTAGE BATTERY COOLING • Connect the M-MDS to the DLC-2. • Switch the main power ON. • Select the following menu and perform the forced operation of the high voltage battery cooling system for 5 min. 1. Press [Start] to start the vehicle identification. 2. Press the [Toolbox] tab. 3. Press the [Work Support] icon. 4. Press [EV]. 5. Press [Run] for Compulsory operating Air Conditioner. 6. Select [Cooling for drive battery] and press [Next]. • Display the following PIDs using the M-MDS. (See PID/DATA MONITOR INSPECTION.) BECM ― [HV_BATT_TEMP_MAX] • Is PID [HV_BATT_TEMP_MAX] 40 °C {104 °F} or more?	Yes	Perform the inspection content in Step 24 until the temperature of the high voltage battery is 40 °C {104 °F} or less.
No	Go to the next step.
25	VERIFY OPERATION OF 2WAY VALVE FOR REFRIGERANT • Connect the M-MDS to the DLC-2. • Switch the main power ON. • Using the M-MDS, select the service support item [Self-Diagnosing Air Conditioner control valves] and inspect the 2way valve for refrigerant. Note • Because [Self-Diagnosing Air Conditioner control valves] cannot be performed if the ambient temperature is 15°C {59 °F} or less or 40 °C {104 °F} or more, go to Step 26 and inspect the 2way valve for refrigerant. 1. Press [Start] to start the vehicle identification. 2. Press the [Toolbox] tab. 3. Press the [Work Support] icon. 4. Press [EV]. 5. Press [Run] for Self-Diagnosing Air Conditioner control valves. 6. Select [2-way valve] and press [Next]. • Is [Normal] displayed as the diagnosis result?	Yes	Go to Step 27.
No	If [Abnormal] is displayedIf [Incomplete] is displayed • Repair or replace the malfunctioning location and perform the repair completion verification. (See HEAT PUMP VALVE COMPONENT No.2 REMOVAL/INSTALLATION.) • Go to the next step.
26	VERIFY OPERATION OF 2WAY VALVE FOR REFRIGERANT • Connect the M-MDS to the DLC-2. • Switch the main power ON. • Access the HP simulation item [2_WAY_VLV] using the M-MDS. (See SIMULATION INSPECTION.) • Switch the main power ON (READY on) • Turn the [2_WAY_VLV] PID to ON from OFF using the M-MDS simulation function. • is operation sound heard?	Yes	Go to the next step.
No	Repair or replace the malfunctioning location and perform the repair completion verification. (See HEAT PUMP VALVE COMPONENT No.2 REMOVAL/INSTALLATION.)
27	VERIFY OPERATION OF 3WAY VALVE FOR REFRIGERANT • Connect the M-MDS to the DLC-2. • Switch the main power ON. • Using the M-MDS, select the service support item [Self-Diagnosing Air Conditioner control valves] and inspect the 3way valve for refrigerant. Note • Because [Self-Diagnosing Air Conditioner control valves] cannot be performed if the ambient temperature is 15°C {59 °F} or less or 40 °C {104 °F} or more, go to Step 28 and inspect the 3way valve for refrigerant. 1. Press [Start] to start the vehicle identification. 2. Press the [Toolbox] tab. 3. Press the [Work Support] icon. 4. Press [EV]. 5. Press [Run] for Self-Diagnosing Air Conditioner control valves. 6. Select [3-way valve] and press [Next]. • Is [Normal] displayed as the diagnosis result?	Yes	Go to Step 29.
No	If [Abnormal] is displayedIf [Incomplete] is displayed • Repair or replace the malfunctioning location and perform the repair completion verification. (See HEAT PUMP VALVE COMPONENT No.1 REMOVAL/INSTALLATION.) • Go to the next step.
28	VERIFY OPERATION OF 3WAY VALVE FOR REFRIGERANT • Connect the M-MDS to the DLC-2. • Switch the main power ON. • Access the HP simulation item [3_WAY_VLV] using the M-MDS. (See SIMULATION INSPECTION.) • Switch the main power ON (READY on) • Turn the [3_WAY_VLV] PID to ON from OFF using the M-MDS simulation function. • is operation sound heard?	Yes	Go to the next step.
No	Repair or replace the malfunctioning location and perform the repair completion verification. (See HEAT PUMP VALVE COMPONENT No.1 REMOVAL/INSTALLATION.)
29	INSPECT ELECTRIC EXPANSION VALVE • Connect the M-MDS to the DLC-2. • Switch the main power ON. • Using the M-MDS, select the service support item [Self-Diagnosing Air Conditioner control valves] and inspect the electric expansion valve. Note • Because [Self-Diagnosing Air Conditioner control valves] cannot be performed if the ambient temperature is 15°C {59 °F} or less or 40 °C {104 °F} or more, go to Step 30 and inspect the electric expansion valve. 1. Press [Start] to start the vehicle identification. 2. Press the [Toolbox] tab. 3. Press the [Work Support] icon. 4. Press [EV]. 5. Press [Run] for Self-Diagnosing Air Conditioner control valves. 6. Select the [Expansion valve for cabin side] and press [Next]. • Is [Normal] displayed as the diagnosis result?	Yes	Go to Step 31.
No	If [Abnormal] is displayedIf [Incomplete] is displayed • Repair or replace the malfunctioning location and perform the repair completion verification. (See HEAT PUMP VALVE COMPONENT No.1 REMOVAL/INSTALLATION.) • Go to the next step.
30	INSPECT ELECTRIC EXPANSION VALVE • Connect the M-MDS to the DLC-2. • Switch the main power ON. • Access the HP simulation item [A/C_EEV_INIT_LRN] using the M-MDS. (See SIMULATION INSPECTION.) • Switch the main power ON (READY on) • Turn the [A/C_EEV_INIT_LRN] PID to ON from OFF using the M-MDS simulation function. • Is the operation of the electric expansion valve for refrigerant normal?	Yes	Go to the next step.
No	Repair or replace the malfunctioning location and perform the repair completion verification. (See HEAT PUMP VALVE COMPONENT No.1 REMOVAL/INSTALLATION.)
31	INSPECT REFRIGERANT PRESSURE SENSOR No.1 • Inspect the refrigerant pressure sensor No.1. (See REFRIGERANT PRESSURE SENSOR No.1 INSPECTION [FULL-AUTO AIR CONDITIONER].) • Is the refrigerant pressure sensor No.1 normal?	Yes	Go to the next step.
No	Repair or replace the malfunctioning location and perform the repair completion verification. (See REFRIGERANT PRESSURE SENSOR No.1 REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)
32	INSPECT REFRIGERANT PRESSURE SENSOR No.2 • Inspect the refrigerant pressure sensor No.2. (See REFRIGERANT PRESSURE SENSOR No.2 INSPECTION.) • Is the refrigerant pressure sensor No.2 normal?	Yes	Go to the next step.
No	Repair or replace the malfunctioning location and perform the repair completion verification. (See REFRIGERANT PRESSURE SENSOR No.2 REMOVAL/INSTALLATION.)
33	INSPECT EVAPORATOR TEMPERATURE SENSOR • Inspect the evaporator temperature sensor. (See EVAPORATOR TEMPERATURE SENSOR INSPECTION [FULL-AUTO AIR CONDITIONER].) • Is the evaporator temperature sensor normal?	Yes	Verify the evaporator temperature installation condition and repair the installation position. (See EVAPORATOR TEMPERATURE SENSOR REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].) Go to the next step.
No	Repair or replace the malfunctioning location and perform the repair completion verification. (See EVAPORATOR TEMPERATURE SENSOR REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)
34	INSPECT TEMPERATURE SENSOR OF REFRIGERANT LINE FOR CONDENSER OUTLET • Inspect the temperature sensor of refrigerant line for condenser outlet. (See TEMPERATURE SENSOR OF REFRIGERANT LINE FOR CONDENSER OUTLET INSPECTION [FULL-AUTO AIR CONDITIONER].) • Is the temperature sensor of refrigerant line for condenser outlet normal?	Yes	Go to the next step.
No	Repair or replace the malfunctioning location and perform the repair completion verification. (See TEMPERATURE SENSOR OF REFRIGERANT LINE FOR CONDENSER OUTLET REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)
35	INSPECT TEMPERATURE SENSOR OF REFRIGERANT LINE FOR EVAPORATOR OUTLET • Inspect the temperature sensor of refrigerant line for evaporator outlet. (See TEMPERATURE SENSOR OF REFRIGERANT LINE FOR EVAPORATOR OUTLET INSPECTION [FULL-AUTO AIR CONDITIONER].) • Is the temperature sensor of refrigerant line for evaporator outlet normal?	Yes	Go to the next step.
No	Repair or replace the malfunctioning location and perform the repair completion verification. (See TEMPERATURE SENSOR OF REFRIGERANT LINE FOR EVAPORATOR OUTLET REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)
36	INSPECT AMBIENT TEMPERATURE SENSOR • Inspect the ambient temperature sensor. (See AMBIENT TEMPERATURE SENSOR INSPECTION [FULL-AUTO AIR CONDITIONER].) • Is the ambient temperature sensor normal?	Yes	Go to the next step.
No	Repair or replace the malfunctioning location and perform the repair completion verification. (See AMBIENT TEMPERATURE SENSOR REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)
37	INSPECT PASSENGER COMPARTMENT TEMPERATURE SENSOR • Inspect the cabin temperature sensor. (See PASSENGER COMPARTMENT TEMPERATURE SENSOR INSPECTION [FULL-AUTO AIR CONDITIONER].) • Is the cabin temperature sensor normal?	Yes	Replace the electric compressor. (See ELECTRIC COMPRESSOR REMOVAL/INSTALLATION.) After replacing the part, perform repair completion verification.
No	Repair or replace the malfunctioning location and perform the repair completion verification. (See PASSENGER COMPARTMENT TEMPERATURE SENSOR REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)
38	PERFORM REFRIGERANT SYSTEM PERFORMANCE TEST • Perform the refrigerant system performance test. (See REFRIGERANT SYSTEM PERFORMANCE TEST.) • Is the result of the refrigerant system performance test normal?	Yes	Explain to the customer that the system satisfies the required performance.
No	Go to the next step.
39	INSPECT AIR MIX ACTUATOR • Inspect the air mix actuator. (See AIR MIX ACTUATOR INSPECTION [FULL-AUTO AIR CONDITIONER].) • Is the air mix actuator normal?	Yes	Go to the next step.
No	Replace the air mix actuator and perform the repair completion verification. (See AIR MIX ACTUATOR REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)
40	INSPECT AIR INTAKE ACTUATOR • Inspect the air intake actuator. (See AIR INTAKE ACTUATOR INSPECTION [FULL-AUTO AIR CONDITIONER].) • Is the air intake actuator normal?	Yes	Go to the next step.
No	Replace the air intake actuator and perform the repair completion verification. (See AIR INTAKE ACTUATOR REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)
41	INSPECT REFRIGERANT PRESSURE SENSOR No.1 • Inspect the refrigerant pressure sensor No.1. (See REFRIGERANT PRESSURE SENSOR No.1 INSPECTION [FULL-AUTO AIR CONDITIONER].) • Is the refrigerant pressure sensor No.1 normal?	Yes	Go to the next step.
No	Repair or replace the malfunctioning location and perform the repair completion verification. (See REFRIGERANT PRESSURE SENSOR No.1 REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)
42	INSPECT REFRIGERANT PRESSURE SENSOR No.2 • Inspect the refrigerant pressure sensor No.2. (See REFRIGERANT PRESSURE SENSOR No.2 INSPECTION.) • Is the refrigerant pressure sensor No.2 normal?	Yes	Go to the next step.
No	Repair or replace the malfunctioning location and perform the repair completion verification. (See REFRIGERANT PRESSURE SENSOR No.2 REMOVAL/INSTALLATION.)
43	INSPECT EVAPORATOR TEMPERATURE SENSOR • Inspect the evaporator temperature sensor. (See EVAPORATOR TEMPERATURE SENSOR INSPECTION [FULL-AUTO AIR CONDITIONER].) • Is the evaporator temperature sensor normal?	Yes	Verify the evaporator temperature installation condition and repair the installation position. (See EVAPORATOR TEMPERATURE SENSOR REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].) Go to the next step.
No	Repair or replace the malfunctioning location and perform the repair completion verification. (See EVAPORATOR TEMPERATURE SENSOR REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)
44	INSPECT TEMPERATURE SENSOR OF REFRIGERANT LINE FOR CONDENSER OUTLET • Inspect the temperature sensor of refrigerant line for condenser outlet. (See TEMPERATURE SENSOR OF REFRIGERANT LINE FOR CONDENSER OUTLET INSPECTION [FULL-AUTO AIR CONDITIONER].) • Is the temperature sensor of refrigerant line for condenser outlet normal?	Yes	Go to the next step.
No	Repair or replace the malfunctioning location and perform the repair completion verification. (See TEMPERATURE SENSOR OF REFRIGERANT LINE FOR CONDENSER OUTLET REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)
45	INSPECT TEMPERATURE SENSOR OF REFRIGERANT LINE FOR EVAPORATOR OUTLET • Inspect the temperature sensor of refrigerant line for evaporator outlet. (See TEMPERATURE SENSOR OF REFRIGERANT LINE FOR EVAPORATOR OUTLET INSPECTION [FULL-AUTO AIR CONDITIONER].) • Is the temperature sensor of refrigerant line for evaporator outlet normal?	Yes	Go to the next step.
No	Repair or replace the malfunctioning location and perform the repair completion verification. (See TEMPERATURE SENSOR OF REFRIGERANT LINE FOR EVAPORATOR OUTLET REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)
46	INSPECT AMBIENT TEMPERATURE SENSOR • Inspect the ambient temperature sensor. (See AMBIENT TEMPERATURE SENSOR INSPECTION [FULL-AUTO AIR CONDITIONER].) • Is the ambient temperature sensor normal?	Yes	Go to the next step.
No	Repair or replace the malfunctioning location and perform the repair completion verification. (See AMBIENT TEMPERATURE SENSOR REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)
47	INSPECT PASSENGER COMPARTMENT TEMPERATURE SENSOR • Inspect the cabin temperature sensor. (See PASSENGER COMPARTMENT TEMPERATURE SENSOR INSPECTION [FULL-AUTO AIR CONDITIONER].) • Is the cabin temperature sensor normal?	Yes	Replace the electric compressor. (See ELECTRIC COMPRESSOR REMOVAL/INSTALLATION.) After replacing the part, perform repair completion verification.
No	Repair or replace the malfunctioning location and perform the repair completion verification. (See PASSENGER COMPARTMENT TEMPERATURE SENSOR REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)
48	INSPECT CONDENSER • Inspect the condenser. (See CONDENSER INSPECTION.) • Is the condenser normal?	Yes	Replace the refrigerant. After vacuum discharging for 15 min and charging with refrigerant to the specified level, perform the repair completion verification.
No	Repair or replace the malfunctioning location and perform the repair completion verification. (See CONDENSER REMOVAL/INSTALLATION.)
Repair completion verification	VERIFY THAT MALFUNCTION DOES NOT RECUR AFTER REPAIRS • If refrigerant was discharged during inspection and not recharged, perform vacuum discharging and charge with new refrigerant to the specified level. (See REFRIGERANT CHARGING.) • Is there cool airflow? (Is the result of the refrigerant system performance test normal?) (See REFRIGERANT SYSTEM PERFORMANCE TEST.)	Yes	Troubleshooting completed (explain repair contents to customer).
No	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [L.H.D. (E)].) (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [R.H.D.].) If the CAN communication is normal, perform the diagnosis from Step 1.

Step

Inspection

Action

VERIFY ELECTRIC COMPRESSOR OPERATION

• Is the electric compressor operating when the airflow temperature is set to MAX COLD?

Yes

Go to the next step.

Go to the following malfunction symptom item.

(See ELECTRIC COMPRESSOR DOES NOT OPERATE EVEN WITH MAX COLD SETTING [FULL-AUTO AIR CONDITIONER].)

INSPECT BLOWER UNIT AND AIR FILTER

• Are the blower unit intake and air filter clogged?

(See AIR FILTER INSPECTION.)

Yes

Remove the cause of the clogging.

Replace the air filter if it is clogged.

(See AIR FILTER REMOVAL/INSTALLATION.)

After performing the repair, go to Step 17.

Go to the next step.

VERIFY BLOWER MOTOR OPERATION

• Switch the main power ON (READY off or on).

• Set the airflow volume control switch to ON.

• Does the blower motor operate and does air flow from the vent?

Yes

Go to the next step.

Go to the following malfunction symptom item.

(See AMOUNT OF AIR BLOWN FROM VENTS DOES NOT CHANGE [FULL-AUTO AIR CONDITIONER].)

VERIFY COOLING FAN OPERATION

• Verify the cooling fan operation.

(See COOLING FAN MOTOR INSPECTION.)

• Is the cooling fan operation normal?

Yes

Go to the next step.

Repair or replace the malfunctioning location and perform the repair completion verification.

(See COOLING FAN MOTOR REMOVAL/INSTALLATION.)

INSPECT ACTIVE AIR SHUTTER

• Inspect the applicable part.

(See ACTIVE AIR SHUTTER INSPECTION.)

• Is the active air shutter normal?

Yes

Go to the next step.

Repair or replace the malfunctioning location and perform the repair completion verification.

(See ACTIVE AIR SHUTTER REMOVAL/INSTALLATION.)

INSPECT REFRIGERANT PRESSURE

• Inspect the refrigerant pressure.

(See REFRIGERANT PRESSURE CHECK.)

• Is the refrigerant pressure normal?

Yes

Go to the next step.

Record the inspection results.

• If the refrigerant pressures on the high pressure and low pressure sides are both high, go to Step 7.

• If the refrigerant pressure values on the high pressure and low pressure sides are both low, go to Step 21.

• If the refrigerant pressure value on the low pressure side is initially normal, but it becomes a negative value after some time, perform vacuum discharging for 1 hour, charge the specified amount of the refrigerant, then perform the repair completion verification.

• If the refrigerant pressure value on the low pressure side is constantly negative, go to Step 22.

• If the refrigerant pressure on the high pressure side is low and the refrigerant pressure on the low pressure side is high, go to Step 23.

• If the refrigerant pressure values on the high pressure and low pressure sides are both normal, go to Step 38.

• If the refrigerant pressure on the high pressure side is normal and the refrigerant pressure on the low pressure side is high, go to Step 38.

• If the refrigerant pressure on the high pressure side is high and the refrigerant pressure on the low pressure side is normal, go to Step 38.

• If the refrigerant pressure on the high pressure side is low and the refrigerant pressure on the low pressure side is normal, go to Step 38.

VERIFY HIGH VOLTAGE BATTERY TEMPERATURE

• Connect the M-MDS to the DLC-2.

• Switch the main power ON.

• Display the following PIDs using the M-MDS.

(See PID/DATA MONITOR INSPECTION.)

BECM

― [HV_BATT_TEMP_MAX]

• Is PID [HV_BATT_TEMP_MAX] 40 °C {104 °F} or more?

Yes

Go to the next step.

Go to Step 9.

PERFORM HIGH VOLTAGE BATTERY COOLING

• Connect the M-MDS to the DLC-2.

• Switch the main power ON.

• Select the following menu and perform the forced operation of the high voltage battery cooling system for 5 min.

1. Press [Start] to start the vehicle identification.

2. Press the [Toolbox] tab.

3. Press the [Work Support] icon.

4. Press [EV].

5. Press [Run] for Compulsory operating Air Conditioner.

6. Select [Cooling for drive battery] and press [Next].

• Display the following PIDs using the M-MDS.

(See PID/DATA MONITOR INSPECTION.)

BECM

― [HV_BATT_TEMP_MAX]

• Is PID [HV_BATT_TEMP_MAX] 40 °C {104 °F} or more?

Yes

Perform the inspection content in Step 8 until the temperature of the high voltage battery is 40 °C {104 °F} or less.

Go to the next step.

VERIFY OPERATION OF 2WAY VALVE FOR REFRIGERANT

• Connect the M-MDS to the DLC-2.

• Switch the main power ON.

• Using the M-MDS, select the service support item [Self-Diagnosing Air Conditioner control valves] and inspect the 2way valve for refrigerant.

Note

• Because [Self-Diagnosing Air Conditioner control valves] cannot be performed if the ambient temperature is 15°C {59 °F} or less or 40 °C {104 °F} or more, go to Step 10 and inspect the 2way valve for refrigerant.

1. Press [Start] to start the vehicle identification.

2. Press the [Toolbox] tab.

3. Press the [Work Support] icon.

4. Press [EV].

5. Press [Run] for Self-Diagnosing Air Conditioner control valves.

6. Select [2-way valve] and press [Next].

• Is [Normal] displayed as the diagnosis result?

Yes

Go to Step 11.

If [Abnormal] is displayedIf [Incomplete] is displayed

• Repair or replace the malfunctioning location and perform the repair completion verification.

(See HEAT PUMP VALVE COMPONENT No.2 REMOVAL/INSTALLATION.)

• Go to the next step.

VERIFY OPERATION OF 2WAY VALVE FOR REFRIGERANT

• Connect the M-MDS to the DLC-2.

• Switch the main power ON.

• Access the HP simulation item [2_WAY_VLV] using the M-MDS.

(See SIMULATION INSPECTION.)

• Switch the main power ON (READY on)

• Turn the [2_WAY_VLV] PID to ON from OFF using the M-MDS simulation function.

• is operation sound heard?

Yes

Go to the next step.

Repair or replace the malfunctioning location and perform the repair completion verification.

(See HEAT PUMP VALVE COMPONENT No.2 REMOVAL/INSTALLATION.)

VERIFY OPERATION OF 3WAY VALVE FOR REFRIGERANT

• Connect the M-MDS to the DLC-2.

• Switch the main power ON.

• Using the M-MDS, select the service support item [Self-Diagnosing Air Conditioner control valves] and inspect the 3way valve for refrigerant.

Note

• Because [Self-Diagnosing Air Conditioner control valves] cannot be performed if the ambient temperature is 15°C {59 °F} or less or 40 °C {104 °F} or more, go to Step 12 and inspect the 3way valve for refrigerant.

1. Press [Start] to start the vehicle identification.

2. Press the [Toolbox] tab.

3. Press the [Work Support] icon.

4. Press [EV].

5. Press [Run] for Self-Diagnosing Air Conditioner control valves.

6. Select [3-way valve] and press [Next].

• Is [Normal] displayed as the diagnosis result?

Yes

Go to Step 13.

If [Abnormal] is displayedIf [Incomplete] is displayed

• Repair or replace the malfunctioning location and perform the repair completion verification.

(See HEAT PUMP VALVE COMPONENT No.1 REMOVAL/INSTALLATION.)

• Go to the next step.

VERIFY OPERATION OF 3WAY VALVE FOR REFRIGERANT

• Connect the M-MDS to the DLC-2.

• Switch the main power ON.

• Access the HP simulation item [3_WAY_VLV] using the M-MDS.

(See SIMULATION INSPECTION.)

• Switch the main power ON (READY on)

• Turn the [3_WAY_VLV] PID to ON from OFF using the M-MDS simulation function.

• is operation sound heard?

Yes

Go to the next step.

Repair or replace the malfunctioning location and perform the repair completion verification.

(See HEAT PUMP VALVE COMPONENT No.1 REMOVAL/INSTALLATION.)

INSPECT REFRIGERANT PRESSURE SENSOR No.1

• Inspect the refrigerant pressure sensor No.1.

(See REFRIGERANT PRESSURE SENSOR No.1 INSPECTION [FULL-AUTO AIR CONDITIONER].)

• Is the refrigerant pressure sensor No.1 normal?

Yes

Go to the next step.

Repair or replace the malfunctioning location and perform the repair completion verification.

(See REFRIGERANT PRESSURE SENSOR No.1 REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)

INSPECT REFRIGERANT PRESSURE SENSOR No.2

• Inspect the refrigerant pressure sensor No.2.

(See REFRIGERANT PRESSURE SENSOR No.2 INSPECTION.)

• Is the refrigerant pressure sensor No.2 normal?

Yes

Go to the next step.

Repair or replace the malfunctioning location and perform the repair completion verification.

(See REFRIGERANT PRESSURE SENSOR No.2 REMOVAL/INSTALLATION.)

INSPECT EVAPORATOR TEMPERATURE SENSOR

• Inspect the evaporator temperature sensor.

(See EVAPORATOR TEMPERATURE SENSOR INSPECTION [FULL-AUTO AIR CONDITIONER].)

• Is the evaporator temperature sensor normal?

Yes

Verify the evaporator temperature installation condition and repair the installation position.

(See EVAPORATOR TEMPERATURE SENSOR REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)

Go to the next step.

Repair or replace the malfunctioning location and perform the repair completion verification.

(See EVAPORATOR TEMPERATURE SENSOR REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)

INSPECT TEMPERATURE SENSOR OF REFRIGERANT LINE FOR CONDENSER OUTLET

• Inspect the temperature sensor of refrigerant line for condenser outlet.

(See TEMPERATURE SENSOR OF REFRIGERANT LINE FOR CONDENSER OUTLET INSPECTION [FULL-AUTO AIR CONDITIONER].)

• Is the temperature sensor of refrigerant line for condenser outlet normal?

Yes

Go to the next step.

Repair or replace the malfunctioning location and perform the repair completion verification.

(See TEMPERATURE SENSOR OF REFRIGERANT LINE FOR CONDENSER OUTLET REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)

INSPECT TEMPERATURE SENSOR OF REFRIGERANT LINE FOR EVAPORATOR OUTLET

• Inspect the temperature sensor of refrigerant line for evaporator outlet.

(See TEMPERATURE SENSOR OF REFRIGERANT LINE FOR EVAPORATOR OUTLET INSPECTION [FULL-AUTO AIR CONDITIONER].)

• Is the temperature sensor of refrigerant line for evaporator outlet normal?

Yes

Go to the next step.

Repair or replace the malfunctioning location and perform the repair completion verification.

(See TEMPERATURE SENSOR OF REFRIGERANT LINE FOR EVAPORATOR OUTLET REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)

INSPECT AMBIENT TEMPERATURE SENSOR

• Inspect the ambient temperature sensor.

(See AMBIENT TEMPERATURE SENSOR INSPECTION [FULL-AUTO AIR CONDITIONER].)

• Is the ambient temperature sensor normal?

Yes

Go to the next step.

Repair or replace the malfunctioning location and perform the repair completion verification.

(See AMBIENT TEMPERATURE SENSOR REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)

INSPECT PASSENGER COMPARTMENT TEMPERATURE SENSOR

• Inspect the passenger compartment temperature sensor.

(See PASSENGER COMPARTMENT TEMPERATURE SENSOR INSPECTION [FULL-AUTO AIR CONDITIONER].)

• Is the passenger compartment temperature sensor normal?

Yes

Go to the next step.

Repair or replace the malfunctioning location and perform the repair completion verification.

(See PASSENGER COMPARTMENT TEMPERATURE SENSOR REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)

INSPECT CONDENSER

• Inspect the condenser.

(See CONDENSER INSPECTION.)

• Is the condenser normal?

Yes

Replace the refrigerant.

After vacuum discharging for 15 min and charging with refrigerant to the specified level, perform the repair completion verification.

Repair or replace the malfunctioning location and perform the repair completion verification.

(See CONDENSER REMOVAL/INSTALLATION.)

INSPECT SYSTEM PIPING

• Inspect the system piping for gas leakage using the gas leak tester.

(See REFRIGERANT CHARGING.)

• Is the system piping normal?

Yes

Replace the high voltage battery and perform the repair completion verification.

(See HIGH VOLTAGE BATTERY REMOVAL/INSTALLATION.)

Replace the O-ring of the malfunctioning location (system piping connecting area). Or replace the malfunctioning location of the system piping and perform the repair completion verification.

(See FLEXIBLE HOSE REMOVAL/INSTALLATION.)(See FRONT COOLER PIPE REMOVAL/INSTALLATION.)(See REAR COOLER PIPE REMOVAL/INSTALLATION.)

INSPECT REFRIGERANT PRESSURE

• Leave it for 5 min and then inspect the pressure performance again.

• Is the refrigerant pressure value on the low pressure side initially normal and then it becomes a negative value after some time?

Yes

Replace the refrigerant.

After vacuum discharging for 1 hour, charge the refrigerant to the specified level, then perform the repair completion verification.

Replace the electric expansion valve and perform the repair completion verification.

(See HEAT PUMP VALVE COMPONENT No.1 REMOVAL/INSTALLATION.)

VERIFY HIGH VOLTAGE BATTERY TEMPERATURE

• Connect the M-MDS to the DLC-2.

• Switch the main power ON.

• Display the following PIDs using the M-MDS.

(See PID/DATA MONITOR INSPECTION.)

BECM

― [HV_BATT_TEMP_MAX]

• Is PID [HV_BATT_TEMP_MAX] 40 °C {104 °F} or more?

Yes

Go to the next step.

Go to Step 25.

PERFORM HIGH VOLTAGE BATTERY COOLING

• Connect the M-MDS to the DLC-2.

• Switch the main power ON.

• Select the following menu and perform the forced operation of the high voltage battery cooling system for 5 min.

1. Press [Start] to start the vehicle identification.

2. Press the [Toolbox] tab.

3. Press the [Work Support] icon.

4. Press [EV].

5. Press [Run] for Compulsory operating Air Conditioner.

6. Select [Cooling for drive battery] and press [Next].

• Display the following PIDs using the M-MDS.

(See PID/DATA MONITOR INSPECTION.)

BECM

― [HV_BATT_TEMP_MAX]

• Is PID [HV_BATT_TEMP_MAX] 40 °C {104 °F} or more?

Yes

Perform the inspection content in Step 24 until the temperature of the high voltage battery is 40 °C {104 °F} or less.

Go to the next step.

VERIFY OPERATION OF 2WAY VALVE FOR REFRIGERANT

• Connect the M-MDS to the DLC-2.

• Switch the main power ON.

• Using the M-MDS, select the service support item [Self-Diagnosing Air Conditioner control valves] and inspect the 2way valve for refrigerant.

Note

• Because [Self-Diagnosing Air Conditioner control valves] cannot be performed if the ambient temperature is 15°C {59 °F} or less or 40 °C {104 °F} or more, go to Step 26 and inspect the 2way valve for refrigerant.

1. Press [Start] to start the vehicle identification.

2. Press the [Toolbox] tab.

3. Press the [Work Support] icon.

4. Press [EV].

5. Press [Run] for Self-Diagnosing Air Conditioner control valves.

6. Select [2-way valve] and press [Next].

• Is [Normal] displayed as the diagnosis result?

Yes

Go to Step 27.

If [Abnormal] is displayedIf [Incomplete] is displayed

• Repair or replace the malfunctioning location and perform the repair completion verification.

(See HEAT PUMP VALVE COMPONENT No.2 REMOVAL/INSTALLATION.)

• Go to the next step.

VERIFY OPERATION OF 2WAY VALVE FOR REFRIGERANT

• Connect the M-MDS to the DLC-2.

• Switch the main power ON.

• Access the HP simulation item [2_WAY_VLV] using the M-MDS.

(See SIMULATION INSPECTION.)

• Switch the main power ON (READY on)

• Turn the [2_WAY_VLV] PID to ON from OFF using the M-MDS simulation function.

• is operation sound heard?

Yes

Go to the next step.

Repair or replace the malfunctioning location and perform the repair completion verification.

(See HEAT PUMP VALVE COMPONENT No.2 REMOVAL/INSTALLATION.)

VERIFY OPERATION OF 3WAY VALVE FOR REFRIGERANT

• Connect the M-MDS to the DLC-2.

• Switch the main power ON.

• Using the M-MDS, select the service support item [Self-Diagnosing Air Conditioner control valves] and inspect the 3way valve for refrigerant.

Note

• Because [Self-Diagnosing Air Conditioner control valves] cannot be performed if the ambient temperature is 15°C {59 °F} or less or 40 °C {104 °F} or more, go to Step 28 and inspect the 3way valve for refrigerant.

1. Press [Start] to start the vehicle identification.

2. Press the [Toolbox] tab.

3. Press the [Work Support] icon.

4. Press [EV].

5. Press [Run] for Self-Diagnosing Air Conditioner control valves.

6. Select [3-way valve] and press [Next].

• Is [Normal] displayed as the diagnosis result?

Yes

Go to Step 29.

If [Abnormal] is displayedIf [Incomplete] is displayed

• Repair or replace the malfunctioning location and perform the repair completion verification.

(See HEAT PUMP VALVE COMPONENT No.1 REMOVAL/INSTALLATION.)

• Go to the next step.

VERIFY OPERATION OF 3WAY VALVE FOR REFRIGERANT

• Connect the M-MDS to the DLC-2.

• Switch the main power ON.

• Access the HP simulation item [3_WAY_VLV] using the M-MDS.

(See SIMULATION INSPECTION.)

• Switch the main power ON (READY on)

• Turn the [3_WAY_VLV] PID to ON from OFF using the M-MDS simulation function.

• is operation sound heard?

Yes

Go to the next step.

Repair or replace the malfunctioning location and perform the repair completion verification.

(See HEAT PUMP VALVE COMPONENT No.1 REMOVAL/INSTALLATION.)

INSPECT ELECTRIC EXPANSION VALVE

• Connect the M-MDS to the DLC-2.

• Switch the main power ON.

• Using the M-MDS, select the service support item [Self-Diagnosing Air Conditioner control valves] and inspect the electric expansion valve.

Note

• Because [Self-Diagnosing Air Conditioner control valves] cannot be performed if the ambient temperature is 15°C {59 °F} or less or 40 °C {104 °F} or more, go to Step 30 and inspect the electric expansion valve.

1. Press [Start] to start the vehicle identification.

2. Press the [Toolbox] tab.

3. Press the [Work Support] icon.

4. Press [EV].

5. Press [Run] for Self-Diagnosing Air Conditioner control valves.

6. Select the [Expansion valve for cabin side] and press [Next].

• Is [Normal] displayed as the diagnosis result?

Yes

Go to Step 31.

If [Abnormal] is displayedIf [Incomplete] is displayed

• Repair or replace the malfunctioning location and perform the repair completion verification.

(See HEAT PUMP VALVE COMPONENT No.1 REMOVAL/INSTALLATION.)

• Go to the next step.

INSPECT ELECTRIC EXPANSION VALVE

• Connect the M-MDS to the DLC-2.

• Switch the main power ON.

• Access the HP simulation item [A/C_EEV_INIT_LRN] using the M-MDS.

(See SIMULATION INSPECTION.)

• Switch the main power ON (READY on)

• Turn the [A/C_EEV_INIT_LRN] PID to ON from OFF using the M-MDS simulation function.

• Is the operation of the electric expansion valve for refrigerant normal?

Yes

Go to the next step.

Repair or replace the malfunctioning location and perform the repair completion verification.

(See HEAT PUMP VALVE COMPONENT No.1 REMOVAL/INSTALLATION.)

INSPECT REFRIGERANT PRESSURE SENSOR No.1

• Inspect the refrigerant pressure sensor No.1.

(See REFRIGERANT PRESSURE SENSOR No.1 INSPECTION [FULL-AUTO AIR CONDITIONER].)

• Is the refrigerant pressure sensor No.1 normal?

Yes

Go to the next step.

Repair or replace the malfunctioning location and perform the repair completion verification.

(See REFRIGERANT PRESSURE SENSOR No.1 REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)

INSPECT REFRIGERANT PRESSURE SENSOR No.2

• Inspect the refrigerant pressure sensor No.2.

(See REFRIGERANT PRESSURE SENSOR No.2 INSPECTION.)

• Is the refrigerant pressure sensor No.2 normal?

Yes

Go to the next step.

Repair or replace the malfunctioning location and perform the repair completion verification.

(See REFRIGERANT PRESSURE SENSOR No.2 REMOVAL/INSTALLATION.)

INSPECT EVAPORATOR TEMPERATURE SENSOR

• Inspect the evaporator temperature sensor.

(See EVAPORATOR TEMPERATURE SENSOR INSPECTION [FULL-AUTO AIR CONDITIONER].)

• Is the evaporator temperature sensor normal?

Yes

Verify the evaporator temperature installation condition and repair the installation position.

(See EVAPORATOR TEMPERATURE SENSOR REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)

Go to the next step.

Repair or replace the malfunctioning location and perform the repair completion verification.

(See EVAPORATOR TEMPERATURE SENSOR REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)

INSPECT TEMPERATURE SENSOR OF REFRIGERANT LINE FOR CONDENSER OUTLET

• Inspect the temperature sensor of refrigerant line for condenser outlet.

(See TEMPERATURE SENSOR OF REFRIGERANT LINE FOR CONDENSER OUTLET INSPECTION [FULL-AUTO AIR CONDITIONER].)

• Is the temperature sensor of refrigerant line for condenser outlet normal?

Yes

Go to the next step.

Repair or replace the malfunctioning location and perform the repair completion verification.

(See TEMPERATURE SENSOR OF REFRIGERANT LINE FOR CONDENSER OUTLET REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)

INSPECT TEMPERATURE SENSOR OF REFRIGERANT LINE FOR EVAPORATOR OUTLET

• Inspect the temperature sensor of refrigerant line for evaporator outlet.

(See TEMPERATURE SENSOR OF REFRIGERANT LINE FOR EVAPORATOR OUTLET INSPECTION [FULL-AUTO AIR CONDITIONER].)

• Is the temperature sensor of refrigerant line for evaporator outlet normal?

Yes

Go to the next step.

Repair or replace the malfunctioning location and perform the repair completion verification.

(See TEMPERATURE SENSOR OF REFRIGERANT LINE FOR EVAPORATOR OUTLET REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)

INSPECT AMBIENT TEMPERATURE SENSOR

• Inspect the ambient temperature sensor.

(See AMBIENT TEMPERATURE SENSOR INSPECTION [FULL-AUTO AIR CONDITIONER].)

• Is the ambient temperature sensor normal?

Yes

Go to the next step.

Repair or replace the malfunctioning location and perform the repair completion verification.

(See AMBIENT TEMPERATURE SENSOR REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)

INSPECT PASSENGER COMPARTMENT TEMPERATURE SENSOR

• Inspect the cabin temperature sensor.

(See PASSENGER COMPARTMENT TEMPERATURE SENSOR INSPECTION [FULL-AUTO AIR CONDITIONER].)

• Is the cabin temperature sensor normal?

Yes

Replace the electric compressor.

(See ELECTRIC COMPRESSOR REMOVAL/INSTALLATION.)

After replacing the part, perform repair completion verification.

Repair or replace the malfunctioning location and perform the repair completion verification.

(See PASSENGER COMPARTMENT TEMPERATURE SENSOR REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)

PERFORM REFRIGERANT SYSTEM PERFORMANCE TEST

• Perform the refrigerant system performance test.

(See REFRIGERANT SYSTEM PERFORMANCE TEST.)

• Is the result of the refrigerant system performance test normal?

Yes

Explain to the customer that the system satisfies the required performance.

Go to the next step.

INSPECT AIR MIX ACTUATOR

• Inspect the air mix actuator.

(See AIR MIX ACTUATOR INSPECTION [FULL-AUTO AIR CONDITIONER].)

• Is the air mix actuator normal?

Yes

Go to the next step.

Replace the air mix actuator and perform the repair completion verification.

(See AIR MIX ACTUATOR REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)

INSPECT AIR INTAKE ACTUATOR

• Inspect the air intake actuator.

(See AIR INTAKE ACTUATOR INSPECTION [FULL-AUTO AIR CONDITIONER].)

• Is the air intake actuator normal?

Yes

Go to the next step.

Replace the air intake actuator and perform the repair completion verification.

(See AIR INTAKE ACTUATOR REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)

INSPECT REFRIGERANT PRESSURE SENSOR No.1

• Inspect the refrigerant pressure sensor No.1.

(See REFRIGERANT PRESSURE SENSOR No.1 INSPECTION [FULL-AUTO AIR CONDITIONER].)

• Is the refrigerant pressure sensor No.1 normal?

Yes

Go to the next step.

Repair or replace the malfunctioning location and perform the repair completion verification.

(See REFRIGERANT PRESSURE SENSOR No.1 REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)

INSPECT REFRIGERANT PRESSURE SENSOR No.2

• Inspect the refrigerant pressure sensor No.2.

(See REFRIGERANT PRESSURE SENSOR No.2 INSPECTION.)

• Is the refrigerant pressure sensor No.2 normal?

Yes

Go to the next step.

Repair or replace the malfunctioning location and perform the repair completion verification.

(See REFRIGERANT PRESSURE SENSOR No.2 REMOVAL/INSTALLATION.)

INSPECT EVAPORATOR TEMPERATURE SENSOR

• Inspect the evaporator temperature sensor.

(See EVAPORATOR TEMPERATURE SENSOR INSPECTION [FULL-AUTO AIR CONDITIONER].)

• Is the evaporator temperature sensor normal?

Yes

Verify the evaporator temperature installation condition and repair the installation position.

(See EVAPORATOR TEMPERATURE SENSOR REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)

Go to the next step.

Repair or replace the malfunctioning location and perform the repair completion verification.

(See EVAPORATOR TEMPERATURE SENSOR REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)

INSPECT TEMPERATURE SENSOR OF REFRIGERANT LINE FOR CONDENSER OUTLET

• Inspect the temperature sensor of refrigerant line for condenser outlet.

(See TEMPERATURE SENSOR OF REFRIGERANT LINE FOR CONDENSER OUTLET INSPECTION [FULL-AUTO AIR CONDITIONER].)

• Is the temperature sensor of refrigerant line for condenser outlet normal?

Yes

Go to the next step.

Repair or replace the malfunctioning location and perform the repair completion verification.

(See TEMPERATURE SENSOR OF REFRIGERANT LINE FOR CONDENSER OUTLET REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)

INSPECT TEMPERATURE SENSOR OF REFRIGERANT LINE FOR EVAPORATOR OUTLET

• Inspect the temperature sensor of refrigerant line for evaporator outlet.

(See TEMPERATURE SENSOR OF REFRIGERANT LINE FOR EVAPORATOR OUTLET INSPECTION [FULL-AUTO AIR CONDITIONER].)

• Is the temperature sensor of refrigerant line for evaporator outlet normal?

Yes

Go to the next step.

Repair or replace the malfunctioning location and perform the repair completion verification.

(See TEMPERATURE SENSOR OF REFRIGERANT LINE FOR EVAPORATOR OUTLET REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)

INSPECT AMBIENT TEMPERATURE SENSOR

• Inspect the ambient temperature sensor.

(See AMBIENT TEMPERATURE SENSOR INSPECTION [FULL-AUTO AIR CONDITIONER].)

• Is the ambient temperature sensor normal?

Yes

Go to the next step.

Repair or replace the malfunctioning location and perform the repair completion verification.

(See AMBIENT TEMPERATURE SENSOR REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)

INSPECT PASSENGER COMPARTMENT TEMPERATURE SENSOR

• Inspect the cabin temperature sensor.

(See PASSENGER COMPARTMENT TEMPERATURE SENSOR INSPECTION [FULL-AUTO AIR CONDITIONER].)

• Is the cabin temperature sensor normal?

Yes

Replace the electric compressor.

(See ELECTRIC COMPRESSOR REMOVAL/INSTALLATION.)

After replacing the part, perform repair completion verification.

Repair or replace the malfunctioning location and perform the repair completion verification.

(See PASSENGER COMPARTMENT TEMPERATURE SENSOR REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)

INSPECT CONDENSER

• Inspect the condenser.

(See CONDENSER INSPECTION.)

• Is the condenser normal?

Yes

Replace the refrigerant.

After vacuum discharging for 15 min and charging with refrigerant to the specified level, perform the repair completion verification.

Repair or replace the malfunctioning location and perform the repair completion verification.

(See CONDENSER REMOVAL/INSTALLATION.)

Repair completion verification

VERIFY THAT MALFUNCTION DOES NOT RECUR AFTER REPAIRS

• If refrigerant was discharged during inspection and not recharged, perform vacuum discharging and charge with new refrigerant to the specified level.

(See REFRIGERANT CHARGING.)

• Is there cool airflow? (Is the result of the refrigerant system performance test normal?)

(See REFRIGERANT SYSTEM PERFORMANCE TEST.)

Yes

Troubleshooting completed (explain repair contents to customer).

Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.

(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [L.H.D. (E)].)

(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [R.H.D.].)

If the CAN communication is normal, perform the diagnosis from Step 1.