| Last Modified: 07-31-2024 | 6.11:8.1.0 | Doc ID: RM100000001GTP9 |
| Model Year Start: 2020 | Model: Corolla | Prod Date Range: [01/2019 - 09/2022] |
| Title: WIPER / WASHER: WIPER AND WASHER SYSTEM (for HV Model): Wiper and Washer Switch Circuit; 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022] | ||
|
Wiper and Washer Switch Circuit |
DESCRIPTION
The condition of the windshield wiper switch assembly is detected and sent to the steering sensor in this circuit.
WIRING DIAGRAM
PROCEDURE
|
1. |
READ VALUE USING TECHSTREAM |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Chassis / Steering Angle Sensor / Data List.
(e) Read the Data List according to the display on the Techstream.
Chassis > Steering Angle Sensor > Data List
|
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
Wiper OFF Switch |
Front wiper switch OFF position signal |
OFF or ON |
OFF: Front wiper switch not in OFF position ON: Front wiper switch in OFF position |
- |
|
Wiper Auto/Int Switch |
Front wiper switch INT position signal |
OFF or ON |
OFF: Front wiper switch not in INT position ON: Front wiper switch in INT position |
- |
|
Wiper Lo Switch |
Front wiper switch LO position signal |
OFF or ON |
OFF: Front wiper switch not in LO position ON: Front wiper switch in LO position |
- |
|
Wiper Hi Switch |
Front wiper switch HI position signal |
OFF or ON |
OFF: Front wiper switch not in HI position ON: Front wiper switch in HI position |
- |
|
Wiper Mist Switch |
Front wiper switch MIST position signal |
OFF or ON |
OFF: Front wiper switch not in MIST position ON: Front wiper switch in MIST position |
- |
|
Washer Switch |
Washer switch Fr WASH position signal |
OFF or ON |
OFF: Washer switch not in Fr WASH position ON: Washer switch in Fr WASH position |
- |
|
Intermittent Time Volume |
Intermittent time adjustment switch condition |
Shortest, Shorter, Longer or Longest |
Shortest: P4 Shorter: P3 Longer: P2 Longest: P1 |
* |
-
*: Refer to Inspection for each position of the switch.
Click here
![2020 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - ]; WIPER / WASHER: WIPER SWITCH: INSPECTION](/t3Portal/stylegraphics/info.gif)
Chassis > Steering Angle Sensor > Data List
|
Tester Display |
|---|
|
Wiper OFF Switch |
|
Wiper Auto/Int Switch |
|
Wiper Lo Switch |
|
Wiper Hi Switch |
|
Wiper Mist Switch |
|
Washer Switch |
|
Intermittent Time Volume |
OK:
The Techstream display changes correctly in response to the windshield wiper switch assembly operation.
| OK |
|
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
|
2. |
INSPECT WINDSHIELD WIPER SWITCH ASSEMBLY |
(a) Remove the windshield wiper switch assembly.
Click here
(b) Inspect the windshield wiper switch assembly.
Click here
| NG |
|
|
|
3. |
INSPECT STEERING WHEEL SWITCH HOUSING |
(a) Remove the steering wheel switch housing.
Click here
(b) Inspect the steering wheel switch housing.
Click here
| NG |
|
REPLACE STEERING WHEEL SWITCH HOUSING
|
|
|
4. |
CHECK HARNESS AND CONNECTOR (STEERING SENSOR - WINDSHIELD WIPER RELAY) |
(a) Disconnect the A56 windshield wiper relay connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
I46-2 (2S) - A56-3 (2S) |
Always |
Below 1 Ω |
|
I46-2 (2S) or A56-3 (2S) - Body ground |
Always |
10 kΩ or higher |
| OK |
|
REPLACE WINDSHIELD WIPER RELAY
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|