Last Modified: 04-05-2023 |
6.11:8.1.0 |
Doc ID: RM100000000VITR |
Model Year Start: 2016 |
Model: Sienna |
Prod Date Range: [12/2015 -
] |
Title: TIRE PRESSURE MONITORING: TIRE PRESSURE WARNING SYSTEM: ECU Power Source Circuit; 2016 - 2020 MY Sienna [12/2015 - ] |
DESCRIPTION
This is the power source for the tire pressure warning ECU.
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 write them down before removal.
-
It is necessary to perform initialization (See page
) 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.
-
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
PROCEDURE
1.
|
CHECK HARNESS AND CONNECTOR (ECU - BATTERY)
|
(a) Disconnect the D82 ECU connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
|
Switch Condition
|
Specified Condition
|
D82-7 (IG) - Body ground
|
Ignition switch ON
|
11 to 14 V
|
Ignition switch off
|
Below 1 V
|
Text in Illustration
*a
|
Front view of wire harness connector
(to Tire Pressure Warning ECU)
|
|
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
OK
|
|
|
2.
|
CHECK HARNESS AND CONNECTOR (ECU - BODY GROUND)
|
(a) Disconnect the D82 ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
D82-9 (GND) - Body ground
|
Always
|
Below 1 Ω
|
Text in Illustration
*a
|
Front view of wire harness connector
(to Tire Pressure Warning ECU)
|
|
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
|