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Last Modified: 04-05-2023 |
6.11:8.1.0 |
Doc ID: RM100000000VITR |
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Model Year Start: 2016 |
Model: Sienna |
Prod Date Range: [12/2015 -
] |
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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:
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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.
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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.
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Inspect the fuses for circuits related to this system before performing the following inspection procedure.
PROCEDURE
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1.
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CHECK HARNESS AND CONNECTOR (ECU - BATTERY)
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(a) Disconnect the D82 ECU connector.
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(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
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Tester Connection
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Switch Condition
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Specified Condition
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D82-7 (IG) - Body ground
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Ignition switch ON
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11 to 14 V
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Ignition switch off
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Below 1 V
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Text in Illustration
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*a
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Front view of wire harness connector
(to Tire Pressure Warning ECU)
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| NG |
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REPAIR OR REPLACE HARNESS OR CONNECTOR
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OK
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2.
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CHECK HARNESS AND CONNECTOR (ECU - BODY GROUND)
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(a) Disconnect the D82 ECU connector.
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(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
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Tester Connection
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Condition
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Specified Condition
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D82-9 (GND) - Body ground
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Always
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Below 1 Ω
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Text in Illustration
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*a
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Front view of wire harness connector
(to Tire Pressure Warning ECU)
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| NG |
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REPAIR OR REPLACE HARNESS OR CONNECTOR
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