INSPECTION PROCEDURE 8: The outside/inside air changeover is impossible.
COMMENTS ON TROUBLE SYMPTOM
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.POSSIBLE CAUSES
- Malfunction of the outside/inside air selection damper control motor
- Damaged the wiring harness or connectors
- Malfunction of the automatic air conditioner control panel (A/C-ECU)
DIAGNOSIS
Step 2. Measure the voltage at C-311 outside/inside air selection damper control motor connector.
- Disconnect the connector, and measure at the wiring harness side.
- Ignition switch: ON
- Voltage between terminal 7 and body earth
OK: System voltage
Q: Is the check result normal?
YES:
Go to Step 5
.NO: Go to Step 3
.Step 4. Check the wiring harness between C-311 outside/inside air selection damper control motor connector terminal No.7 and the ignition switch (IG2).
NOTE: Prior to the wiring harness inspection, check intermediate connector C-36 and junction block connectors C-203 and C-205, and repair if necessary.
- Check the power supply line for open circuit.
Q: Is the check result normal?
YES:
The trouble can be an intermittent malfunction (Refer to GROUP 00, How to Cope with Intermittent Malfunction 
).NO: Repair the wiring harness.
Step 7. Check the wiring harness between C-26 A/C-ECU connector (terminals 23 and 26) and C-311 outside/inside air selection damper control motor connector (terminals 6 and 4).
NOTE: Prior to the wiring harness inspection, check intermediate connector C-36, and repair if necessary.
- Check the input and output lines for open or short circuit.
Q: Is the check result normal?
YES:
Replace the automatic air conditioner control panel (A/C-ECU).NO: Repair the wiring harness.