Washer Fluid Level Warning Switch Circuit: Procedure

HINT: 

The following check should be performed with the windshield washer motor and pump installed to the washer jar.

1. Fill the washer jar with washer fluid.
2. Measure the resistance according to the value(s) in the table below.
   Fig 1: Identifying Level Warning Switch Assembly Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   TEXT IN ILLUSTRATION
   
   

   *a	Component without harness connected (Level Warning Switch Assembly)

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   1 (S) - 2 (E)	Fluid volume is more than 800 ml	10 kΩ or higher
   1 (S) - 2 (E)	Fluid volume is less than 600 ml	Below 1 Ω

NG → See step   4 

OK: Go to next step 

1. Disconnect the H19 combination meter assembly connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   H19-7 (WLVL) - A37-1 (S)	Always	Below 1 Ω
   A37-2 (E) - Body ground	Always	Below 1 Ω
   H19-7 (WLVL) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   3