Washer Fluid Level Warning Switch Circuit [08/2015 - 08/2017]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Combination Meter / Data List.
5. According to the display on the Techstream, read the Data List.
   COMBINATION METER
   
   

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

   OK

   On the Techstream screen, each item changes between ON and OFF according to above chart.

Result: 

OK 

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE 

(Refer to PROBLEM SYMPTOMS TABLE [08/2015 - 08/2017] )

Result: 

NG 

See step  2

1. Disconnect the A31 washer fluid level warning switch connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   1 (S) - 2 (E)	Washer jar is empty	Below 5.5 Ω
   	Washer jar is full	10 kΩ or higher

3. Reconnect the washer fluid level warning switch connector.

Result: 

NG 

REPLACE WASHER FLUID LEVEL WARNING SWITCH ASSEMBLY 

Result: 

OK 

See step  3

1. Disconnect the A31 washer fluid level warning switch connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Disconnect the H37 combination meter connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A31-1 (S) - H37-10 (WLVL)	Always	Below 1 Ω
   A31-1 (S) or H37-10 (WLVL) - Body ground	Always	10 kΩ or higher
   A31-2 (E) - Body ground	Always	Below 1 Ω

4. Reconnect the washer fluid level warning switch connector.
5. Reconnect the combination meter connector.

Result: 

OK 

REPLACE COMBINATION METER ASSEMBLY 

(Refer to REMOVAL [08/2015 - 08/2017] )

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR