Last Modified: 04-05-2023 |
6.11:8.1.0 |
Doc ID: RM100000000VJSO |
Model Year Start: 2016 |
Model: Sienna |
Prod Date Range: [12/2015 - 11/2017] |
Title: PRE-COLLISION: PRE-COLLISION SYSTEM: Power Source Circuit; 2016 - 2017 MY Sienna [12/2015 - 11/2017] |
DESCRIPTION
This circuit supplies power to the seat belt control ECU.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
PROCEDURE
1.
|
CHECK HARNESS AND CONNECTOR (GND CIRCUIT)
|
(a) Disconnect the D84 seat belt control ECU connectors.
|
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
D84-8 (PGND) - Body ground
|
Always
|
Below 1 Ω
|
Text in Illustration
*1
|
Front view of wire harness connector
(to Seat Belt Control ECU)
|
(c) Reconnect the seat belt control ECU connector.
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR (GND CIRCUIT)
|
OK
|
|
|
2.
|
CHECK HARNESS AND CONNECTOR (IG1 CIRCUIT)
|
(a) Disconnect the D83 and D84 seat belt control ECU connectors.
|
|
(b) Turn the ignition switch to ON.
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
|
Switch Condition
|
Specified Condition
|
D83-8 (IG1) - D84-8 (PGND)
|
Ignition switch ON
|
11 to 14 V
|
Text in Illustration
*1
|
Front view of wire harness connector
(to Seat Belt Control ECU)
|
(d) Reconnect the seat belt control ECU connector.
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR (IG1 CIRCUIT)
|
OK
|
|
|
3.
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CHECK HARNESS AND CONNECTOR (+B CIRCUIT)
|
(a) Disconnect the D84 seat belt control ECU connectors.
|
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
|
Condition
|
Specified Condition
|
D84-7 (+B) - Body ground
|
Always
|
11 to 14 V
|
Text in Illustration
*1
|
Front view of wire harness connector
(to Seat Belt Control ECU)
|
(c) Reconnect the seat belt control ECU connector.
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR (+B CIRCUIT)
|
|