- Malfunction in seat belt control ECU
- Power source voltage (+B) is not input to the seat belt control ECU.
| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM100000000VJSW |
| Model Year Start: 2016 | Model: Sienna | Prod Date Range: [12/2015 - 11/2017] |
| Title: PRE-COLLISION: PRE-COLLISION SYSTEM: B2036; Power Supply Relay Malfunction Open; 2016 - 2017 MY Sienna [12/2015 - 11/2017] | ||
|
DTC |
B2036 |
Power Supply Relay Malfunction Open |
DESCRIPTION
If the seat belt control ECU judges that there is a malfunction in its internal circuit as a result of self-diagnosis, or if the power source voltage (+B) is not input to the seat belt control ECU, this DTC will be stored.
|
DTC No. |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
B2036 |
|
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
PROCEDURE
|
1. |
INSPECT SEAT BELT CONTROL ECU (+B TERMINAL VOLTAGE) |
|
(a) Disconnect the cable from the negative (-) battery terminal. CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. |
|
(b) Disconnect the D84 seat belt control ECU connector.
(c) Connect the cable to the negative (-) battery terminal.
(d) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
D84-7 (+B) - Body ground |
Ignition switch off |
11 to 14 V |
Text in Illustration
|
*1 |
Front view of wire harness connector (to Seat Belt Control ECU) |
(e) Disconnect the cable from the negative (-) battery terminal.
(f) Reconnect seat belt control ECU connector.
(g) Connect the cable to the negative (-) battery terminal.
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR (+B CIRCUIT) |
|
|
2. |
CHECK FOR DTC |
(a) Using the Techstream, enter the following menus: Body Electrical / Pre-Collision / Trouble Codes.
(b) Clear the DTCs (See page
![2016 - 2017 MY Sienna [12/2015 - 11/2017]; PRE-COLLISION: PRE-COLLISION SYSTEM: DTC CHECK / CLEAR](/t3Portal/stylegraphics/info.gif)
).
(c) Check for DTCs (See page
).
OK:
DTC B2036 is not output.
| OK |
|
CHECK FOR INTERMITTENT PROBLEMS (SYMPTOM SIMULATION) (See page
|
| NG |
|
|
|