| 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] | ||
|
Power Source Circuit |
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) |
|
|
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) |
|
|
3. |
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.
| OK |
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR (+B CIRCUIT) |
|
|