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STEP
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INSPECTION
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ACTION
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1
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• Inspect the cabin temperature sensor. (See CABIN TEMPERATURE SENSOR INSPECTION.)
• Is it normal?
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Yes
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Go to the next step.
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No
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Replace the cabin temperature sensor. (See CABIN TEMPERATURE SENSOR REMOVAL/INSTALLATION.)
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2
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• Disconnect the climate control unit connector and the cabin temperature sensor connector.
• Is there an open circuit in the wiring harness between the following terminals of the climate control unit and the cabin temperature sensor?
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Yes
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Repair the wiring harness.
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No
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Go to the next step.
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3
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• Is there a short circuit to ground in the wiring harness between climate control unit terminal R and cabin temperature sensor terminal D?
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Yes
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Repair the wiring harness.
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No
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Connect the climate control unit connector, then go to the next step.
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4
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• Turn the ignition switch to the ON position.
• Inspect the voltage at the following climate control unit terminal (wiring harness-side).
• Is the voltage normal? (Approx. 5 V)
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Yes
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The system is normal at present. (Clear the past malfunction from the memory.)
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No
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Inspect the connection of the climate control unit connector. (See CLIMATE CONTROL UNIT INSPECTION [FULL-AUTO AIR CONDITIONER].)
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