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:

 Flying Capacitor Circuit Voltage Out of Range (P1AFD00)

DESCRIPTION The battery ECU assembly monitors its internal operation and will store these DTCs when it detects an internal malfunction. DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate P1AFD00 Flying Capacitor Circuit Voltage Out of Range ECU inte

 Stereo Component Amplifier Disconnected (B15D3)

DESCRIPTION The radio receiver assembly and stereo component amplifier assembly are connected via MOST communication lines. When a MOST communication error occurs between the radio receiver assembly and stereo component amplifier assembly, this DTC will be stored. DTC No. Detection Item DTC D

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