| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM100000000VIU4 |
| Model Year Start: 2016 | Model: Sienna | Prod Date Range: [12/2015 - ] |
| Title: TIRE PRESSURE MONITORING: TIRE PRESSURE WARNING SYSTEM: Tire Pressure Warning Reset Switch Circuit; 2016 - 2020 MY Sienna [12/2015 - ] | ||
|
Tire Pressure Warning Reset Switch Circuit |
DESCRIPTION
Initialization can be started by pressing the tire pressure warning reset switch and holding it for 3 seconds or more. If the ECU receives the signal from the switch, the tire pressure warning light blinks 3 times (1 second on, 1 second off).
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- When replacing the tire pressure warning ECU, read the transmitter IDs stored in the old ECU using the Techstream and note down before removal.
-
It is necessary to perform initialization (See page
![2016 - 2020 MY Sienna [12/2015 - ]; TIRE PRESSURE MONITORING: TIRE PRESSURE WARNING SYSTEM: INITIALIZATION](/t3Portal/stylegraphics/info.gif)
) after registration (See page
) of the transmitter IDs into the tire pressure warning ECU, after the ECU and/or tire pressure warning valve and transmitter has been replaced.
PROCEDURE
|
1. |
CHECK TIRE PRESSURE WARNING RESET SWITCH FUNCTION |
(a) Perform the tire pressure warning reset switch test in Test Mode Procedure (See page
).
OK:
Reset switch ON
Tire pressure warning light turns on.
Reset switch OFF
Tire pressure warning light blinks at 0.125 second intervals.
| OK |
|
END |
|
|
2. |
INSPECT TIRE PRESSURE WARNING RESET SWITCH |
|
(a) Remove the tire pressure warning reset switch (See page
|
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
1 - 2 |
ON (Switch is pressed and held) |
Below 1 Ω |
|
OFF (Switch is not pressed) |
10 kΩ or higher |
Text in Illustration
|
*a |
Component without harness connected (Tire Pressure Warning Reset Switch) |
| NG |
|
|
|
3. |
CHECK HARNESS AND CONNECTOR (RESET SWITCH - ECU AND BODY GROUND) |
(a) Disconnect the D37 reset switch connector.
(b) Disconnect the D82 ECU connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
D82-1 (CLSW) - D37-1 |
Always |
Below 1 Ω |
|
D82-1 (CLSW) - Body ground |
Always |
10 kΩ or higher |
|
D37-2 - Body ground |
Always |
Below 1 Ω |
| OK |
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|