Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Washer Fluid Level Warning Switch Circuit

Toyota Corolla Cross (2022-2026) Service Manual / Vehicle Exterior / Wiper / Washer / Wiper And Washer System / 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 GTS (COMBINATION METER)

(a) Read the Data List according to the display on the GTS.

Body Electrical > Combination Meter > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Washer Level Warning Switch

Washer fluid level warning switch

OFF or ON

OFF: Washer fluid level not low

ON: Washer fluid level low

-
Body Electrical > Combination Meter > Data List

Tester Display

Washer Level Warning Switch

OK:

The GTS display changes correctly in response to the washer fluid level.

OK

REPLACE COMBINATION METER ASSEMBLY

NG

2.

INSPECT LEVEL WARNING SWITCH ASSEMBLY

HINT:

This check should be performed with the level warning switch assembly installed on the washer jar.

(a) Remove the level warning switch assembly.

(b) Fill the washer jar with washer fluid.

*a

Component without harness connected

(Level Warning Switch Assembly)

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A158-1 (S) - A158-2 (E)

Fluid volume is 600 to 800 cc (36.6 to 48.8 cu.in.) or higher*

10 kΩ or higher

Fluid volume is 600 to 800 cc (36.6 to 48.8 cu.in.) or lower*

Below 1 Ω

HINT:

*: The level warning switch assembly begins operating when the fluid volume is 600 to 800 cc (36.6 to 48.8 cu.in.) depending on the vehicle condition.

NG

REPLACE LEVEL WARNING SWITCH ASSEMBLY
OK

3.

CHECK HARNESS AND CONNECTOR (LEVEL WARNING SWITCH ASSEMBLY - COMBINATION METER ASSEMBLY)

(a) Disconnect the I4 combination meter assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A158-1 (S) - I4-13 (WLVL)

Always

Below 1 Ω

A158-1 (S) or I4-13 (WLVL) - Body ground

Always

10 kΩ or higher
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

4.

CHECK HARNESS AND CONNECTOR (LEVEL WARNING SWITCH ASSEMBLY - BODY GROUND)

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A158-2 (E) - Body ground

Always

Below 1 Ω
OK

REPLACE COMBINATION METER ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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