| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM100000000VKEX |
| Model Year Start: 2016 | Model: Sienna | Prod Date Range: [12/2015 - ] |
| Title: WIPER / WASHER: WIPER AND WASHER SYSTEM(w/ Rain Sensor): Front Wiper Motor Circuit; 2016 - 2020 MY Sienna [12/2015 - ] | ||
|
Front Wiper Motor Circuit |
DESCRIPTION
The windshield wiper relay assembly controls the windshield wiper motor assembly.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
PROCEDURE
|
1. |
INSPECT WINDSHIELD WIPER MOTOR ASSEMBLY |
(a) Remove the windshield wiper motor assembly (See page
![2016 - 2020 MY Sienna [12/2015 - ]; WIPER / WASHER: FRONT WIPER MOTOR: REMOVAL](/t3Portal/stylegraphics/info.gif)
).
|
(b) Check LO operation. (1) Connect a battery positive (+) lead to terminal 1 (+1) and a negative (-) lead to terminal 5 (E), and check that the motor operates at low speed (LO). OK: Motor operates at low speed (LO). |
|
(c) Check HI operation.
(1) Connect a battery positive (+) lead to terminal 4 (+2) and a negative (-) lead to terminal 5 (E), and check that the motor operates at high speed (HI).
OK:
Motor operates at high speed (HI).
Text in Illustration
|
*a |
Component without harness connected (Windshield Wiper Motor Assembly) |
| NG |
|
|
|
2. |
CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER MOTOR ASSEMBLY - BATTERY AND BODY GROUND) |
|
(a) Disconnect the A5 windshield wiper motor connector. |
|
(b) Measure the voltage and resistance according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
A5-2 (B) - Body ground |
Ignition switch ON |
11 to 14 V |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A5-5 (E) - Body ground |
Always |
Below 1 Ω |
Text in Illustration
|
*a |
Front view of wire harness connector (to Windshield Wiper Motor Assembly) |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
3. |
CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER MOTOR - WINDSHIELD WIPER RELAY) |
(a) Disconnect the D78 windshield wiper relay assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A5-1 (+1) - D78-2 (+1) |
Always |
Below 1 Ω |
|
A5-1 (+1) - Body ground |
Always |
10 kΩ or higher |
|
A5-4 (+2) - D78-3 (+2) |
Always |
Below 1 Ω |
|
A5-4 (+2) - Body ground |
Always |
10 kΩ or higher |
|
A5-3 (+S) - D78-10 (+SM) |
Always |
Below 1 Ω |
|
A5-3 (+S) - Body ground |
Always |
10 kΩ or higher |
| OK |
|
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|