Last Modified: 05-13-2024 |
6.11:8.1.0 |
Doc ID: RM100000001H0SR |
Model Year Start: 2020 |
Model: GR Corolla |
Prod Date Range: [01/2019 - 09/2022] |
Title: WIPER / WASHER: WIPER AND WASHER SYSTEM (for Gasoline Model): Washer Motor Circuit; 2020 - 2022 MY Corolla Corolla Hatchback GR Corolla [01/2019 - 09/2022] |
DESCRIPTION
When the windshield washer motor and pump assembly receives signals from the windshield wiper switch assembly, it operates to spray washer fluid from the washer nozzle sub-assemblies.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
PROCEDURE
1.
|
PERFORM ACTIVE TEST USING TECHSTREAM
|
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter following menus: Body Electrical / Main Body / Active Test.
(e) Perform the Active Test according to the display on the Techstream.
Body Electrical > Main Body > Active Test
Tester Display
|
Measurement Item
|
Control Range
|
Diagnostic Note
|
Front Washer Relay
|
Function to operate the windshield washer motor and pump assembly (Front)
|
OFF or ON
|
-
|
Rear Washer Relay
|
Function to operate the windshield washer motor and pump assembly (Rear)
|
OFF or ON
|
-
|
Body Electrical > Main Body > Active Test
Tester Display
|
Front Washer Relay
|
Body Electrical > Main Body > Active Test
Tester Display
|
Rear Washer Relay
|
OK:
Windshield washer motor and pump assembly operates normally.
NG
|
|
|
2.
|
INSPECT WINDSHIELD WASHER MOTOR AND PUMP ASSEMBLY
|
(a) Remove the windshield washer motor and pump assembly.
Click here
(b) Inspect the windshield washer motor and pump assembly.
Click here
OK
|
|
|
3.
|
CHECK HARNESS AND CONNECTOR (POWER SOURCE - WINDSHIELD WIPER RELAY)
|
(a) Disconnect the A55 windshield wiper relay connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
|
Condition
|
Specified Condition
|
A55-6 (IGWS) - Body ground
|
Ignition switch ON
|
11 to 14 V
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
OK
|
|
|
4.
|
CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER RELAY - BODY GROUND)
|
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
A55-5 (EWS) - Body ground
|
Always
|
Below 1 Ω
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
OK
|
|
|
5.
|
CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER RELAY - WINDSHIELD WASHER MOTOR AND PUMP ASSEMBLY)
|
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
A55-1 (+WR) - A35-1 (B)
|
Always
|
Below 1 Ω
|
A55-7 (-WR) - A35-2 (SW)
|
Always
|
Below 1 Ω
|
A55-1 (+WR) or A35-1 (B) - Body ground
|
Always
|
10 kΩ or higher
|
A55-7 (-WR) or A35-2 (SW) - Body ground
|
Always
|
10 kΩ or higher
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
|