Toyota Sienna Service Manual: Power Seat ECU Communication Stop
DTC B1272 Power Seat ECU Communication Stop
DESCRIPTION
This DTC is detected when communication between the seat position control ECU and the multiplex network gateway ECU stops for more than 10 seconds.
|
DTC No. |
DTC Detection Condition |
Trouble Area |
|
B1272 |
Power seat ECU communication stops |
|
WIRING DIAGRAM
INSPECTION PROCEDURE
1 CHECK HARNESS AND CONNECTOR (SEAT POSITION CONTROL ECU - BATTERY)
- Disconnect the P58 and P59 ECU connectors.
- Measure the voltage according to the value(s) in the table below.
Standard voltage
2 CHECK HARNESS AND CONNECTOR (SEAT POSITION CONTROL ECU - GROUND)
- Measure the resistance according to the value(s) in the table below.
Standard resistance
3 CHECK COMMUNICATION LINE
- Disconnect the G4 ECU connector.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
Result
REPLACE SEAT POSITION CONTROL ECU
Combination Meter ECU Communication Stop
DTC B1271 Combination Meter ECU Communication Stop
DESCRIPTION
DTC B1271 is output when communication between the combination meter and the
multiplex network
gateway ECU stops for more than 10 se ...
Airbag ECU Communication Stop
DTC B1281 Airbag ECU Communication Stop
DESCRIPTION
DTC B1281 is output when communication between the airbag ECU and the
multiplex network gateway
ECU stops for more than 10 seconds.
...
Other materials:
Adjustment procedure
Hold the steering wheel and
push the lever down.
Adjust to the ideal position by
moving the steering wheel horizontally
and vertically.
After adjustment, pull the lever up
to secure the steering wheel.
...
Black Screen
INSPECTION PROCEDURE
1 CHECK DISPLAY SETTING
Check that the display is not in "Screen OFF" mode.
OK:
The display setting is not in "Screen OFF" mode.
2 CHECK IMAGE QUALITY SETTING
Check that the screen color quality can be set.
OK:
Setting is possible.
PRESS PA ...
Half Connection in Center Airbag Sensor
Assembly Connectors
DTC B1135/24 Half Connection in Center Airbag Sensor
Assembly Connectors
DESCRIPTION
The center airbag sensor assembly connector has a mechanism that electrically
detects half connection.
The center airbag sensor assembly monitors the voltage applied to the
disconnection detection pins and ...
