Diagnostic Procedure

INSUFFICIENT AIR (OR NO AIR) BLOWN FROM VENTS DIAGNOSTIC PROCEDURE

Step	Inspection	Results	Action
1	VERIFY DASH-ELECTRICAL SUPPLY UNIT DTCs Perform the DTC inspection for the dash-electrical supply unit. (See DTC INSPECTION .) Are any DTCs displayed?	Yes	Repair or replace the malfunctioning location according to the applicable DTC troubleshooting. (See DTC TABLE [DASH_ESU] .)
1		No	Go to the next step.
2	INSPECT AIR FILTER FOR CLOGGING Is the air filter clogged? (Refer to AIR CLEANER ELEMENT REMOVAL/INSTALLATION [SKYACTIV-G (WITH CYLINDER DEACTIVATION)] , or AIR CLEANER ELEMENT REMOVAL/INSTALLATION [SKYACTIV-G 2.5T] in service information.)	Yes	Replace the malfunctioning location and perform the repair completion verification 1.
2		No	Go to the next step.
3	VERIFY BLOWER MOTOR OPERATION Switch the ignition ON (engine off or on) to operate the A/C. Set the airflow volume control switch to MAX. Does the blower motor rotate?	Yes	Go to the next step.
3		No	Perform the applicable symptom troubleshooting. (See AMOUNT OF AIR BLOWN FROM VENTS DOES NOT CHANGE .)
4	VERIFY AIRFLOW CONDITION Set the airflow mode to VENT mode. Set the airflow volume control switch to MAX. Does sufficient air flow from the vents when the airflow mode is in VENT mode?	Yes	Go to the next step.
4		No	Go to Step 7.
5	VERIFY AIRFLOW CONDITION Set the airflow mode to HEAT mode. Set the airflow volume control switch to MAX. Does sufficient air flow from the vents when the airflow mode is in HEAT mode?	Yes	Go to the next step.
5		No	Go to Step 7.
6	VERIFY AIRFLOW CONDITION Set the airflow mode to DEFROSTER mode. Set the airflow volume control switch to MAX. Does sufficient air flow from the vents when the airflow mode is in DEFROSTER mode?	Yes	Go to Step 9.
6		No	Go to the next step.
7	VERIFY DUCT INSTALLATION CONDITION Is the duct under any of the following conditions? (Refer to FRONT HEAT DUCT REMOVAL/INSTALLATION in service information.) (Refer to REAR HEAT DUCT REMOVAL/INSTALLATION in service information.) Clogging Deformation Air leakage Poor installation	Yes	After securely installing the duct to the correct position and perform the repair completion verification 1. (Refer to FRONT HEAT DUCT REMOVAL/INSTALLATION in service information.) (Refer to REAR HEAT DUCT REMOVAL/INSTALLATION in service information.)
7		No	Go to the next step.
8	VERIFY AIRFLOW MODE LINK OPERATION Verify the operation by manually operating the airflow mode link. Does the airflow mode link operate smoothly?	Yes	Replace the A/C unit because there is a malfunction in the airflow mode door and perform the repair completion verification 1. (Refer to A/C UNIT REMOVAL/INSTALLATION in service information.) (Refer to A/C UNIT DISASSEMBLY/ASSEMBLY in service information.)
8		No	Replace the airflow mode link and perform the repair completion verification 1. (Refer to A/C UNIT REMOVAL/INSTALLATION in service information.) (Refer to A/C UNIT DISASSEMBLY/ASSEMBLY in service information.)
9	VERIFY AIRFLOW MODE ACTUATOR FOR MALFUNCTION Inspect the applicable part. (Refer to AIRFLOW MODE ACTUATOR INSPECTION [FULL-AUTO AIR CONDITIONER] , or AIRFLOW MODE ACTUATOR INSPECTION [MANUAL AIR CONDITIONER] in service information.) Is the part normal?	Yes	Go to the next step.
9		No	Replace the malfunctioning location and perform the repair completion verification 1. (Refer to AIRFLOW MODE ACTUATOR REMOVAL [FULL-AUTO AIR CONDITIONER] , or AIRFLOW MODE ACTUATOR REMOVAL [MANUAL AIR CONDITIONER] in service information.) (Refer to AIRFLOW MODE ACTUATOR INSTALLATION [FULL-AUTO AIR CONDITIONER] , or AIRFLOW MODE ACTUATOR INSTALLATION [MANUAL AIR CONDITIONER] in service information.)
10	VERIFY EVAPORATOR TEMPERATURE SENSOR FOR MALFUNCTION Inspect the applicable part. (Refer to EVAPORATOR TEMPERATURE SENSOR INSPECTION [FULL-AUTO AIR CONDITIONER] , or EVAPORATOR TEMPERATURE SENSOR INSPECTION [MANUAL AIR CONDITIONER] in service information.) Is the part normal?	Yes	Go to the next step.
10		No	Replace the malfunctioning location and perform the repair completion verification 1. (Refer to EVAPORATOR TEMPERATURE SENSOR REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER] , or EVAPORATOR TEMPERATURE SENSOR REMOVAL/INSTALLATION [MANUAL AIR CONDITIONER] in service information.)
Repair completion verification 1	VERIFY IF MALFUNCTION CAUSE IS CORRECTED Does air flow from the vents while in each airflow mode?	Yes	Troubleshooting completed. (Explain repair contents to customer.)
Repair completion verification 1		No	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See MALFUNCTION DIAGNOSIS FLOW [CONTROLLER AREA NETWORK (CAN)] .) If the CAN communication is normal, perform the diagnosis from Step 1.