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INSPECTION PROCEDURE 6: When sunlight intensity changes, air outlet temperature does not Change.
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CIRCUIT OPERATION
When the blower air temperature can not be changed even if the preset temperature is changed, the sensors may be defective.
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TROUBLESHOOTING HINTS
- Malfunction of the photo sensor
- Damaged the wiring harness or connectors
- Malfunction of the A/C-ECU
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| Step 1. Check the rear window defogger and outside/inside air selection damper control motor operation. Q: Do the rear window defogger and outside/inside air selection damper control motor work normally?
YES:
Go to Step 2  .
NO:
Refer to Inspection procedure 10 "Malfunction of the A/C-ECU power supply system  ."
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| Step 2. Use the MUT-II/III to confirm a diagnosis code.
On completion, check that the diagnosis code is not reset.
Q: Is the check result normal?
YES:
Go to Step 3 .
NO:
Carry the diagnosis code procedures. Refer to .
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| Step 3. MUT-II/III data list. OK: Check that the volume of insolation takes inverse proportion with the MUT-II displayed voltage.
Q: Is the check result normal?
YES:
Replace the automatic air conditioner control panel (A/C-ECU).
NO:
Go to Step 4 .
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| Step 4. Connector check: A/C-ECU connector C-27 and photo sensor connector C-123. Q: Is the check result normal?
YES:
Go to Step 5 .
NO:
Repair or replace the connector.
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| Step 5. Check the wiring harness between photo sensor connector C-123 (terminal 1, 2) and A/C-ECU connector C-27 (terminal 19, 9). Q: Is the check result normal?
YES:
Replace the Photo sensor.
NO:
Repair the wiring harness.
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