CHECK FOR INTERMITTENT PROBLEMS CHECK FOR INTERMITTENT PROBLEMS HINT: A momentary interruption (open circuit) in the connectors and/or wire harness between the sensors and ECUs can be detected using the Data List function of the Techstream. (a) Turn the engine switch off. (b) Connect the Techstream to the DLC3. (c) Turn the engine switch on (IG). (d) Turn the Techstream on. (e) Follow the directions on the Techstream to display the Data List and select areas where momentary interruption should be monitored. HINT:
(f) While observing the screen, gently jiggle the connector or wire harness between the ECU and sensors, or between ECUs. OK: Normal is displayed. HINT: If the display changes, this indicates that there has been a momentary interruption (open circuit) in the connector and/or wire harness. In this case, repair or replace the connectors and/or wire harnesses as one of them is faulty. |
Toyota Avalon Service & Repair Manual > Air Conditioning System(for Gasoline Model): Recirculated/Fresh Air Modes Switch without User Input
DESCRIPTION If recirculation/fresh mode changes unintentionally and without permission, the following causes are possible. Symptom Factor Recirculation/fresh mode changes without permission Recirculation/fresh mode light blinks Customize setting* Change in ambient air temperature Decrease in refrige ...