AIR INTAKE MODE DOES NOT CHANGE [FULL-AUTO AIR CONDITIONER]

id0703c1700500

DESCRIPTION

•  Air intake mode does not change when switching REC/FRESH mode •  No change in wind noise when airflow volume is set to 3 or more even if REC/FRESH switch is operated

POSSIBLE CAUSE

•  ROOM 25 A fuse malfunction •  INTERIOR1 15A fuse malfunction •  Open circuit in wiring harness between climate control unit terminal 2A and positive battery terminal •  Short to ground in wiring harness between climate control unit terminal 2A and ROOM 25 A fuse •  Air intake actuator connector malfunction •  Air intake actuator malfunction •  Climate control unit connector malfunction •  Climate control unit malfunction •  Open circuit or short to ground or short to power supply in wiring harness between the following terminals: L.H.D.: ―  Climate control unit terminal 1A — air intake actuator terminal E ―  Climate control unit terminal 1D — air intake actuator terminal D ―  Climate control unit terminal 1U — air intake actuator terminal C ―  Climate control unit terminal 2B — air intake actuator terminal A ―  Climate control unit terminal 2D — air intake actuator terminal B R.H.D.: ―  Climate control unit terminal 1A — air intake actuator terminal C ―  Climate control unit terminal 1D — air intake actuator terminal D ―  Climate control unit terminal 1U — air intake actuator terminal E ―  Climate control unit terminal 2B — air intake actuator terminal B ―  Climate control unit terminal 2D — air intake actuator terminal A •  Short to ground or short to power supply in wiring harness between the following terminals: L.H.D.: ―  Climate control unit terminal 1A — driver-side air mix actuator terminal E ―  Climate control unit terminal 1U — driver-side air mix actuator terminal G ―  Climate control unit terminal 1A — passenger-side air mix actuator terminal G ―  Climate control unit terminal 1U — passenger-side air mix actuator terminal E R.H.D.: ―  Climate control unit terminal 1A — driver-side air mix actuator terminal G ―  Climate control unit terminal 1U — driver-side air mix actuator terminal E ―  Climate control unit terminal 1A — passenger-side air mix actuator terminal E ―  Climate control unit terminal 1U — passenger-side air mix actuator terminal G •  Short to ground or short to power supply in wiring harness between the following terminals: ―  Climate control unit terminal 1A — airflow mode actuator terminal A ―  Climate control unit terminal 1U — airflow mode actuator terminal B •  Short to ground or short to power supply in wiring harness between the following terminals: ―  Climate control unit terminal 1U — solar radiation sensor terminal A •  Short to power supply in wiring harness between the following terminals: ―  Climate control unit terminal 1A — cabin temperature sensor terminal B •  Short to power supply in wiring harness between the following terminals: ―  Climate control unit terminal 1A — evaporator temperature sensor terminal A •  Air intake link malfunction ―  Lack of grease ―  Bad installation •  Air intake door malfunction ―  Bad installation ―  Damage

Diagnostic Procedure

Step	Inspection		Action
1	PERFORM CLIMATE CONTROL UNIT DTC INSPECTION •  Perform the climate control unit DTC inspection using the M-MDS. (See DTC DISPLAY [CLIMATE CONTROL UNIT (FULL-AUTO AIR CONDITIONER)].) •  Are any DTCs displayed?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [CLIMATE CONTROL UNIT (FULL-AUTO AIR CONDITIONER)].)
		No	Go to the next step.
2	INSPECT AIR INTAKE LINK •  Inspect air intake links. (See BLOWER UNIT DISASSEMBLY/ASSEMBLY.) ―  Is grease on link? ―  Are links securely and properly installed? ―  Are links free of obstructions and hindrances? •  Are the above items normal?	Yes	Inspect the air intake doors. (See BLOWER UNIT DISASSEMBLY/ASSEMBLY.) •  If any doors are cracked or damaged, replace them. •  If any doors are not installed securely and properly. Install them in proper positions. •  If there are any obstructions, remove them. Go to the next step.
		No	Apply grease to links. If any links are damaged, replace malfunctioning part. Then go to the next step.
3	VERIFY THAT MALFUNCTION SYMPTOM DOES NOT RECUR AFTER REPAIR •  Does the air intake mode change smoothly?	Yes	Troubleshooting completed. Explain repairs to customer.
		No	Recheck malfunction symptoms, then repeat from Step 1 if the malfunction recurs.