Lexus ES manuals

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.

(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.

Click here

READ NEXT:

 Cooling Fan Circuit

DESCRIPTION The ECM calculates an appropriate cooling fan speed based on the engine coolant temperature, air conditioning switch status, refrigerant pressure, engine speed and vehicle speed, and sends

 Cooling System

On-vehicle InspectionON-VEHICLE INSPECTION CAUTION / NOTICE / HINT CAUTION: Do not remove the radiator cap sub-assembly while the engine and radiator assembly are still hot. Pressurized, hot engine c

 Radiator

SEE MORE:

 Front Passenger Side Power Window Auto Up / Down Function does not Operate with Front Passenger Side Power Window Switch

DESCRIPTION If the manual up and down functions operate normally but the auto up and down functions do not, the power window control system may be in fail-safe mode. If power window initialization has not been performed, the auto up and down functions will not operate. Click here WIRING DIAGRAM C

 Sliding Roof does not Move by Operating Sliding Roof Control Switch

DESCRIPTION The sliding roof ECU (sliding roof drive gear sub-assembly) receives slide and tilt signals and operates its built-in motor when the sliding roof switch (map light sub-assembly) is operated. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: Inspect the fuses for circuits related to this

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