SWITCH/DIAL OPERATION DOES NOT RESPOND [FULL-AUTO AIR CONDITIONER]
SWITCH/DIAL OPERATION DOES NOT RESPOND [FULL-AUTO AIR CONDITIONER]
SM2335670
id0703c1005300
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Troubleshooting item |
Switch/dial operation does not respond |
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Description
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• Specific switch/dial operation of climate control unit does not respond
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Possible cause
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• Climate control unit malfunction
• Rear window defogger switch
• Airflow volume control switch malfunction
• A/C switch system malfunction
• Seat warmer control unit malfunction
• Steering warmer control unit malfunction
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Diagnostic Procedure
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Step |
Inspection |
Action |
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1
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VERIFY MALFUNCTION DURING EACH SWITCH/DIAL OPERATION
• Do the related parts operate according to the switch/dial operation of the climate control unit?
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Yes
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Perform the repair completion verification.
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No
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If specific switch/dial operation does not respond
• Go to the next step.
If all switch/dial operations do not respond
• Go to the following malfunction symptom item. (See ALL SWITCH/DIAL OPERATION DOES NOT RESPOND [FULL-AUTO AIR CONDITIONER].)
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2
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VERIFY MALFUNCTIONING SWITCH/DIAL
• Is any one of the following climate control unit switch the one which does not respond to being operated?
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Yes
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Go to the applicable inspection.
― Steering warmer switch (See HEATED STEERING WHEEL CONTROL UNIT INSPECTION.)
― Seat warmer switch (See POSITION MEMORY CONTROL MODULE REMOVAL/INSTALLATION [(US)].)
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No
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Go to the next step.
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3
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PERFORM DASH-ELECTRICAL SUPPLY UNIT DTC INSPECTION
• Perform the dash-electrical supply unit DTC inspection using the M-MDS. (See DTC INSPECTION.)
• Are any DTCs displayed?
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Yes
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Go to the applicable DTC inspection.
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No
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Go to the next step.
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4
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VERIFY MALFUNCTIONING SWITCH/DIAL
• Is the switch which does not respond to being operated the rear window defogger switch?
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Yes
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Verify the body control module (BCM) DTCs.
(See DTC INSPECTION.)
If DTC is displayed:
• Repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC TABLE [BODY CONTROL MODULE (BCM) (US)].)
If DTC is not displayed:
• Replace the climate control unit, then perform the repair completion verification. (See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER (US)].)
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No
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Go to the next step.
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5
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VERIFY MALFUNCTIONING SWITCH/DIAL
• Is any one of the following climate control unit switch/dials the one which does not respond to being operated?
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Yes
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Replace the climate control unit, then perform the repair completion verification.
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No
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Go to the next step.
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6
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VERIFY MALFUNCTION DURING AIRFLOW VOLUME CONTROL SWITCH OPERATION
• Is the switch which does not respond to being operated the climate control unit airflow volume control switch?
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Yes
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Go to the next step.
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No
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Go to Step 8.
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7
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DETERMINE IF MALFUNCTION IS CAUSED BY FRONT BLOWER MOTOR CIRCUIT MALFUNCTION OR FRONT CLIMATE CONTROL UNIT MALFUNCTION
• Is the airflow volume setting displayed normally in the display panel after operating the climate control unit airflow volume control switch?
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Yes
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Go to the following malfunction symptom item.
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No
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Replace the climate control unit, then perform the repair completion verification.
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8
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VERIFY MALFUNCTION DURING A/C SWITCH OPERATION
• Is the switch which does not respond to being operated the climate control unit A/C switch?
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Yes
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Go to the next step.
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No
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Perform the repair completion verification.
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9
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DETERMINE IF MALFUNCTION IS CAUSED BY A/C OPERATION CIRCUIT MALFUNCTION OR FRONT CLIMATE CONTROL UNIT MALFUNCTION
• Is [A/C] displayed in the display panel after operating the climate control unit A/C switch?
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Yes
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Go to the following malfunction symptom item.
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No
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Go to the next step.
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10
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VERIFY AMBIENT TEMPERATURE
• Is the ambient temperature -5 °C or less?
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Yes
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Normal (A/C does not turn on when ambient temperature is -5 °C or less to protect A/C compressor)
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No
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Replace the climate control unit, then perform the repair completion verification.
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Repair completion verification
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VERIFY THAT MALFUNCTION SYMPTOM DOES NOT RECUR AFTER REPAIR
• Do the related parts operate according to the switch/dial operation of the climate control unit?
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Yes
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Troubleshooting completed.
Explain repairs to customer.
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No
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Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.
If the CAN communication is normal, perform the diagnosis from Step 1.
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