Lexus ES manuals

Lexus ES: Wiper and Washer Switch Circuit

DESCRIPTION

The condition of the windshield wiper switch assembly is detected and sent to the steering sensor in this circuit.

WIRING DIAGRAM

PROCEDURE

1.

READ VALUE USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Chassis / Steering Angle Sensor / Data List.

(e) Read the Data List according to the display on the Techstream.

Chassis > Steering Angle Sensor > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Wiper OFF Switch

Front wiper switch OFF position signal

OFF or ON

OFF: Front wiper switch not in OFF position

ON: Front wiper switch in OFF position

-

Wiper Auto/Int Switch

Front wiper switch AUTO*2 or INT*3 position signal

OFF or ON

OFF: Front wiper switch not in AUTO*2 or INT*3 position

ON: Front wiper switch in AUTO*2 or INT*3 position

-

Wiper Lo Switch

Front wiper switch LO position signal

OFF or ON

OFF: Front wiper switch not in LO position

ON: Front wiper switch in LO position

-

Wiper Hi Switch

Front wiper switch HI position signal

OFF or ON

OFF: Front wiper switch not in HI position

ON: Front wiper switch in HI position

-

Wiper Mist Switch

Front wiper switch MIST position signal

OFF or ON

OFF: Front wiper switch not in MIST position

ON: Front wiper switch in MIST position

-

Washer Switch

Washer switch ON position signal

OFF or ON

OFF: Front washer switch not in ON position

ON: Front washer switch in ON position

-

Intermittent Time Volume

Auto sensitivity adjustment switch condition*2

Intermittent time adjustment switch condition*3

Shortest, Shorter, Longer or Longest

Shortest: P4

Shorter: P3

Longer: P2

Longest: P1

*1

  • *1: Refer to Inspection for each position of the switch.

    Click here

  • *2: w/ Auto Wiper System
  • *3: w/o Auto Wiper System
Chassis > Steering Angle Sensor > Data List

Tester Display

Wiper OFF Switch

Wiper Auto/Int Switch

Wiper Lo Switch

Wiper Hi Switch

Wiper Mist Switch

Washer Switch

Intermittent Time Volume

OK:

The Techstream display changes correctly in response to the windshield wiper switch assembly operation.

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

2.

INSPECT WINDSHIELD WIPER SWITCH ASSEMBLY

(a) Remove the windshield wiper switch assembly.

Click here

(b) Inspect the windshield wiper switch assembly.

Click here

NG

REPLACE WINDSHIELD WIPER SWITCH ASSEMBLY

OK

3.

INSPECT STEERING WHEEL SWITCH HOUSING

(a) Remove the steering wheel switch housing.

Click here

(b) Inspect the steering wheel switch housing.

Click here

OK

REPLACE STEERING SENSOR

NG

REPLACE STEERING WHEEL SWITCH HOUSING

READ NEXT:

 Washer Motor Circuit

DESCRIPTION When the windshield washer motor and pump assembly receives signals from the windshield wiper switch assembly it operates to spray washer fluid from the washer nozzle sub-assemblies. WIRIN

 Washer Fluid Level Warning Switch Circuit

DESCRIPTION When the washer fluid level is lower than a certain level, a warning message is displayed on the combination meter assembly. WIRING DIAGRAM PROCEDURE 1. READ VALUE USING TECHSTREAM

 Wiper And Washer System (for Hv Model)

SEE MORE:

 Terminals Of Ecu

TERMINALS OF ECU NOTICE: Turning the power switch on (IG) with connectors disconnected may cause DTCs to be stored. Make sure to clear the DTCs after inspection has been performed. Do not apply excessive force to the millimeter wave radar sensor assembly connector. CHECK MILLIMETER WAVE RAD

 How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT HINT: Use the following procedure to troubleshoot the lane control system. *: Use the Techstream. PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP NEXT 2. PRE-CHECK (a) Measure the battery voltage. Standard Voltage: 11 to 14 V If the voltag

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