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

INSPECTION PROCEDURE

1. READ VALUE OF INTELLIGENT TESTER (WASHER LEVEL)

1. Connect the intelligent tester to the DLC3.

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

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

   Body No. 5 (Front Controller): 

   Item	Measurement Item / Display (Range)	Normal Condition	Diagnostic 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)

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

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

   Standard resistance:

   Tester Connection	Condition	Specified Condition
   2F-7 (WLVL) - Body ground	Washer fluid is full	10 kΩ or higher
   2F-7 (WLVL) - Body ground	Washer fluid is empty	Below 1 Ω

NG	Go to step 3

OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

3. CHECK WASHER FLUID LEVEL SENSOR

1. Disconnect the A1 washer fluid level sensor connector.

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

   Standard resistance:

   Tester Connection	Condition	Specified Condition
   A1-1 - A1-2	Washer fluid is empty	Below 1 Ω
   A1-1 - A1-2	Washer fluid is full	10 kΩ or higher

NG	REPLACE WASHER FLUID LEVEL SENSOR

OK
REPAIR OR REPLACE HARNESS OR CONNECTOR