Lexus IS250 IS220d GSE20 ALE20 - WIPER AND WASHER

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE OF INTELLIGENT TESTER (WASHER LEVEL)

CHECK HARNESS AND CONNECTOR (FRONT CONTROLLER (ENGINE ROOM NO. 2 J/B) - BODY GROUND)

CHECK WASHER FLUID LEVEL SENSOR

WIPER AND WASHER SYSTEM - Washer Fluid Level Warning Switch Circuit

DESCRIPTION

The front controller receives washer fluid level warning switch condition (on or off) information, and sends it through multiplex communication lines to the combination meter.


The combination meter receives this information, and turns on the washer fluid level warning light when the washer fluid becomes low.


WIRING DIAGRAM

Wiper And Washer System - Washer Fluid Level Warning Switch Circuit. WIPER AND WASHER. Lexus IS250 IS220d GSE20 ALE20

INSPECTION PROCEDURE

1.READ VALUE OF INTELLIGENT TESTER (WASHER LEVEL)

Connect the intelligent tester to the DLC3.

Turn the engine switch on (IG) and turn the intelligent tester main switch on.

Select the item below in the DATA LIST, and read the displays on the intelligent tester.

Body No. 5 (Front Controller):
ItemMeasurement Item / Display (Range)Normal ConditionDiagnostic Note
Washer Level Switch Washer fluid level switch / ON or OFF ON: Washer fluid is empty
OFF: Washer fluid is full		-
NG
Go to step 2
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
2.CHECK HARNESS AND CONNECTOR (FRONT CONTROLLER (ENGINE ROOM NO. 2 J/B) - BODY GROUND)
Wiper And Washer System - Washer Fluid Level Warning Switch Circuit. WIPER AND WASHER. Lexus IS250 IS220d GSE20 ALE20

Disconnect the 2F front controller (engine room No. 2 J/B) connector.

Measure the resistance according to the value(s) in the table below.

  • Standard resistance:
  • Tester ConnectionConditionSpecified Condition
    2F-7 (WLVL) - Body groundWasher fluid is full10 kΩ or higher
    2F-7 (WLVL) - Body groundWasher fluid is emptyBelow 1 Ω
NG
Go to step 3
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
3.CHECK WASHER FLUID LEVEL SENSOR
Wiper And Washer System - Washer Fluid Level Warning Switch Circuit. WIPER AND WASHER. Lexus IS250 IS220d GSE20 ALE20

Disconnect the A1 washer fluid level sensor connector.

Measure the resistance according to the value(s) in the table below.

  • Standard resistance:
  • Tester ConnectionConditionSpecified Condition
    A1-1 - A1-2Washer fluid is emptyBelow 1 Ω
    A1-1 - A1-2Washer fluid is full10 kΩ or higher
NG
REPLACE WASHER FLUID LEVEL SENSOR
OK
REPAIR OR REPLACE HARNESS OR CONNECTOR
LEXUS IS250, IS220d / GSE20 ALE20
WIPER AND WASHER
Lexus IS250 IS220d GSE20 ALE20
WIPER AND WASHER SYSTEM