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AIR INTAKE MODE DOES NOT CHANGE [MANUAL AIR CONDITIONER]

AIR INTAKE MODE DOES NOT CHANGE [MANUAL AIR CONDITIONER]

 id0703c2700500

Troubleshooting item

Air intake mode does not change
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
•  Dash-electrical supply unit detects DTC
―  Detects DTC and activates fail-safe
•  Air intake link malfunction
―  Lack of grease
―  Bad installation
•  Air intake actuator malfunction
•  Air intake door malfunction
―  Bad installation
―  Damage

•  When performing an asterisked (*) troubleshooting inspection, shake the wiring harness and connectors while performing 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 harnesses are connected correctly and undamaged.

Diagnostic Procedure

Step

Inspection

Action
1
PERFORM DASH-ELECTRICAL SUPPLY UNIT DTC INSPECTION
•  Perform the dash-electrical supply unit DTC inspection using the M-MDS.
•  Are any DTCs displayed?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [DASH-ELECTRICAL SUPPLY UNIT (E)].)
No
Go to the next step.
2
INSPECT AIR INTAKE LINK
•  Inspect air intake links.
―  Is grease on link?
―  Are links securely and properly installed?
―  Are links free of obstructions and hindrances?
•  Are the above items normal?
Yes
Go to the next step.
No
Apply grease to links.
If any links are damaged, replace malfunctioning part.
Then perform the repair completion verification.
3
INSPECT AIR INTAKE ACTUATOR
•  Inspect the air intake actuator.
•  Is it normal?
Yes
Inspect the air intake doors, then perform the repair completion verification.
(See BLOWER UNIT DISASSEMBLY/ASSEMBLY [(E)].)
•  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.
No
Replace the air intake actuator, then perform the repair completion verification.
(See AIR INTAKE ACTUATOR REMOVAL/INSTALLATION [MANUAL AIR CONDITIONER (E)].)
Repair completion verification
VERIFY THAT MALFUNCTION SYMPTOM DOES NOT RECUR AFTER REPAIR
•  Does the air intake mode change smoothly?
Yes
Troubleshooting completed.
Explain repairs 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 [(E)].)
If the CAN communication is normal, perform the diagnosis from Step 1.