Inspection Procedure 5: The outside/inside air changeover is
impossible.
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COMMENTS ON TROUBLE SYMPTOM
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When inside air cannot be changed to outside
air vice versa even if its changeover switch is on, the
outside/inside air selection damper control motor system may be
defective.
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- Malfunction of the outside/inside air selection damper control
motor
- Damaged the wiring harness or connectors
- Malfunction of the automatic A/C control panel
(A/C-ECU)
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STEP 1. Check the operation of the heater control panel
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Check that the A/C switch, rear window
defogger switch and air volume control dial can operate.
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Q.
Is the check result normal?
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 Go to Step 2.
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 Inspection Procedure 14: Refer to
A/C-ECU power supply system  .
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STEP 2. Connector check: D-108 outside/inside air selection
damper control motor connector.
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Q.
Is the check result normal?
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Go to Step 3.
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Repair
the connector.
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STEP 3. Voltage measurement at D-108 outside/inside air selection
damper control motor connector.
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(1)Disconnect the connector, and measure at the wiring
harness side.
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(2)Turn the ignition switch to the ON position.
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(3)Measure the voltage between terminal 1 and body
earth.
OK: System voltage
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Q.
Is the check result normal?
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Go to Step 5.
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Go to Step 4.
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STEP 4. Check the wiring harness between D-108 outside/inside air
selection damper control motor connector terminal No.1 and the ignition
switch (IG2).
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| note |
Prior to the wiring harness inspection, check
junction block connectors D-401 and D-403, and repair if
necessary.
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- Check the motor power supply line for open circuit.
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Q.
Is the check result normal?
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The
trouble can be an intermittent malfunction (Refer to GROUP 00, How to Cope
with Intermittent Malfunction ).
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Repair
the wiring harness.
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STEP 5. Check the outside/inside air selection damper control
motor
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Refer to .
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Q.
Is the check result normal?
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Go to Step 6.
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Replace the outside/inside air
selection damper control motor.
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STEP 6. Connector check: D-108 A/C-ECU connector
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Q.
Is the check result normal?
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Go to Step 7.
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Repair
the connector.
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STEP 7. Check the wiring harness between D-08 A/C-ECU connector
(terminals 34 and 33) and D-108 outside/inside air selection damper
control motor connector (terminals 2 and 3).
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- Check the motor activating lines for open or short circuit.
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Q.
Is the check result normal?
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Replace the automatic A/C control
panel (A/C-ECU).
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Repair
the wiring harness.
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