Washer Fluid Level Warning Switch Circuit: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Body No. 5 / Data List.
5. Check the Data List for proper functioning of the washer level warning switch.
   BODY NO. 5 (FRONT CONTROLLER):
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Washer Level Switch	Washer level switch / ON or OFF	ON: Washer jar is empty OFF: Washer jar is full	-

   OK

   The normal conditions listed above are displayed.

NG → See step   2 

OK → PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN  PROBLEM SYMPTOMS TABLE  

1. Measure the resistance according to the value(s) in the table below.
   Fig 1: Identifying Level Warning Switch Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Resistance

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

NG → REPLACE LEVEL WARNING SWITCH ASSEMBLY 

OK: Go to next step 

1. Disconnect the 1I connector from the front controller.
   Fig 2: Identifying Front Controller Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Resistance

   Tester Connection	Condition	Specified Condition
   1I-2 - Body ground	Washer jar is full	Below 1 Ω
   1I-2 - Body ground	Washer jar is empty	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN  PROBLEM SYMPTOMS TABLE