WINDSHIELD FOGGED [CLIMATE CONTROL SYSTEM]

DESCRIPTION	• A/C compressor does not operate while airflow mode is in DEFROSTER or DEF/HEAT modes • Air intake mode does not change to FRESH while airflow mode is in DEFROSTER or DEF/HEAT modes
POSSIBLE CAUSE	• A/C compressor malfunction • INTERIOR 15 A fuse, ROOM 25 A malfunction • Air intake link malfunction • Open or short circuit in wiring harness between climate control unit and air intake actuator • Air intake actuator malfunction • Climate control unit malfunction • A/C unit malfunction • Air intake door malfunction

• When performing an asterisked (*) troubleshooting inspection, shake the wiring harness and connectors while doing the inspection to discover whether poor contact points are the cause of any intermittent malfunctions. If there is a problem, inspect to make sure connectors, terminals and wiring harness are connected correctly and undamaged.

Step	Inspection		Action
1	COOL AIR BLOW OUT INSPECTION • When both the A/C switch and airflow volume control dial in the climate control unit are on, does cool air blow out from the vent?	Yes	Go to the next step.
1		No	Go to Step 1 of the following troubleshooting. NO COOL AIR [CLIMATE CONTROL SYSTEM]
2	INSPECT FUSE • Remove the INTERIOR 15 A fuse and ROOM 25 A fuse. • Is the fuse normal?	Yes	Go to the next step.
2		No	If the fuse is melted: Repair or replace wiring harness for a short to ground and replace the fuse. If the fuse is deterioration: Replace the fuse. Then go to Step 13.
3	INSPECT AIR INTAKE ACTUATOR LINK • Inspect the air intake actuator link. (See A/C UNIT REMOVAL/INSTALLATION.) ― Is there grease on the link? ― Is the link securely and properly positioned? ― Is the link free of obstructions? • Are the above items normal?	Yes	Go to the next step.
3		No	Apply grease or install the link properly and securely, remove obstruction, then go to Step 13. (See A/C UNIT DISASSEMBLY/ASSEMBLY.)
4*	INSPECT WIRING HARNESS BETWEEN FUSE BLOCK AND CLIMATE CONTROL UNIT FOR CONTINUITY • Disconnect the climate control unit connector. (See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].) (See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [MANUAL AIR CONDITIONER].) • Switch the ignition ON (engine off or on). • Measure voltage at the following terminal of climate control unit. ― Terminal L • Is the voltage approx. 12 V?	Yes	Go to the next step.
4*		No	Refer to the wiring diagram and verify whether or not there is a common connector between fuse block terminal and climate control unit terminal. If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness. Go to Step 13.
5	VERIFY WHETHER MALFUNCTION IS IN A/C UNIT AIR INTAKE DOOR OR ELSEWHERE • Switch the ignition off. • Connect the climate control unit connector. • Remove the air intake actuator. (See AIR INTAKE ACTUATOR REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].) (See AIR INTAKE ACTUATOR REMOVAL/INSTALLATION [MANUAL AIR CONDITIONER].) • Switch the ignition ON (engine off or on). • Set the airflow volume control dial to MAX position. • Does the air intake mode (RECIRCULATE, FRESH) change smoothly when the air intake link is operated by hand?	Yes	Go to the next step.
5		No	Go to Step 11.
6	INSPECT AIR INTAKE ACTUATOR • Inspect the air intake actuator. (See AIR INTAKE ACTUATOR INSPECTION [FULL-AUTO AIR CONDITIONER].) (See AIR INTAKE ACTUATOR INSPECTION [MANUAL AIR CONDITIONER].) • Is it normal?	Yes	Go to the next step.
6		No	Replace the air intake actuator, go to Step 13. (See AIR INTAKE ACTUATOR REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].) (See AIR INTAKE ACTUATOR REMOVAL/INSTALLATION [MANUAL AIR CONDITIONER].)
7	INSPECT AIR INTAKE SELECTOR SWITCH AND DEFROSTER SWITCH IN CLIMATE CONTROL UNIT • Measure voltage at the following terminals of climate control unit. ― Terminal U (FRESH signal) ― Terminal S (RECIRCULATE signal) • Is voltage normal?	Yes	Go to the next step.
7		No	Replace the climate control unit, then go to Step 13. (See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].) (See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [MANUAL AIR CONDITIONER].)
8*	INSPECT WIRING HARNESS BETWEEN CLIMATE CONTROL UNIT AND AIR INTAKE ACTUATOR FOR CONTINUITY • Switch the ignition off. • Is there continuity between the following climate control unit terminals and air intake actuator terminals? ― Terminal U —Terminal A (FRESH signal) ― Terminal S —Terminal B (RECIRCULATE signal)	Yes	Go to the next step.
8*		No	Refer to the wiring diagram and verify whether or not there is a common connector between climate control unit terminal and air intake actuator terminal. If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has an open circuit. Go to Step 13.
9*	INSPECT WIRING HARNESS BETWEEN CLIMATE CONTROL UNIT AND AIR INTAKE ACTUATOR FOR SHORT TO GROUND • Is there continuity between the following climate control unit terminals and ground? ― Terminal U (FRESH signal) ― Terminal S (RECIRCULATE signal)	Yes	Refer to the wiring diagram and verify whether or not there is a common connector between climate control unit terminal and air intake actuator terminal. If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has a short to ground. Go to Step 13.
9*		No	Go to the next step.
10*	INSPECT WIRING HARNESS BETWEEN CLIMATE CONTROL UNIT AND AIR INTAKE ACTUATOR FOR SHORT TO B+ • Switch the ignition ON (engine off or on). • Measure the voltage at the following climate control unit terminals. ― Terminal U (FRESH signal) ― Terminal S (RECIRCULATE signal) • Is the voltage approx. 12 V?	Yes	Refer to the wiring diagram and verify whether or not there is a common connector between climate control unit terminal and air intake actuator terminal. If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to power supply. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has a short to power supply. Go to Step 13.
10*		No	Replace the climate control unit, then go to Step 13. (See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].) (See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [MANUAL AIR CONDITIONER].)
11	INSPECT A/C UNIT AIR INTAKE DOOR • Is there any foreign matter or obstruction in the A/C unit air intake door? (See A/C UNIT REMOVAL/INSTALLATION.)	Yes	Remove obstruction, then go to Step 13.
11		No	Go to the next step.
12	VERIFY THAT A/C UNIT AIR INTAKE DOOR IS POSITIONED SECURELY AND PROPERLY • Is the a/c unit air intake door securely and properly positioned? (See A/C UNIT REMOVAL/INSTALLATION.)	Yes	Go to the next step.
12		No	Install the air intake door securely in the proper position, then go to the next step. (See A/C UNIT DISASSEMBLY/ASSEMBLY.)
13	VERIFY THAT MALFUNCTION SYMPTOM DOES NOT RECUR AFTER REPAIR • Does the malfunction disappear?	Yes	Troubleshooting completed. Explain repairs to customer.
13		No	Recheck malfunction symptoms, then repeat from Step 1 if the malfunction recurs.