Lexus ES: On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT COOLING FAN SYSTEM
CAUTION:
To prevent injury due to contact with an operating cooling fan, keep your hands and clothing away from the cooling fan when inspecting the cooling fan system.
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(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine / Active Test / Control the Engine Cooling Fan Duty Ratio.
Powertrain > Engine > Active Test| Tester Display |
|---|
| Control the Engine Cooling Fan Duty Ratio |
(e) Check the operation of the cooling fan while operating it using the Techstream.
OK:
| Active Test Operation | Fan Operation |
|---|---|
| 30 - 100% | Cooling fan operates |
| 0% | Cooling fan stops |
If the cooling fan motor (fan with motor assembly) does not operate, check the cooling fan circuit.
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