Toyota Sienna Service Manual: 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 seconds.
|
DTC No. |
DTC Detection Condition |
Trouble Area |
|
B1271 |
Combination meter communication stops |
|
WIRING DIAGRAM
INSPECTION PROCEDURE
1 CHECK HARNESS AND CONNECTOR (COMBINATION METER - BATTERY)
- Disconnect the C10 connector.
- Measure the voltage according to the value(s) in the table below.
Standard voltage
2 CHECK HARNESS AND CONNECTOR (COMBINATION METER - GROUND)
- Measure the resistance according to the value(s) in the table below.
Standard resistance
3 CHECK COMMUNICATION LINE
- Disconnect the A9 and G4 connectors.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
HINT:
*1: for Automatic A/C
*2: for Manual A/C
Result
REPLACE COMBINATION METER
A/C ECU Communication Stop
DTC B1262 A/C ECU Communication Stop
DESCRIPTION
DTC B1262 is output when communication between the A/C amplifier and the
multiplex network gateway
ECU stops for more than 10 seconds.
...
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 ...
Other materials:
Registering a new contact to the contact list
New contact data can be registered. Up to 4 numbers per person can be
registered. For PBAP compatible Bluetooth® phones, this function is available
when “Automatic Transfer” is set to off.
Select “New Contact”.
Enter the name and select “OK”.
Enter the phone number and sele ...
Inspection
1. INSPECT UNDERDRIVE PLANETARY GEAR PRELOAD
(a) Using SST, fix the underdrive planetary gear
assembly.
SST 09387-00050
(b) Using SST and a torque wrench, measure the
turning torque of the underdrive planetary gear
assembly while rotating the torque wrench at 60
rpm.
SST 09387-00050
...
Rear Airbag Sensor RH Circuit Malfunction
DTC B1154/38 Rear Airbag Sensor RH Circuit Malfunction
DESCRIPTION
The rear airbag sensor RH circuit consists of the center airbag sensor
assembly and rear airbag sensor
RH.
If the center airbag sensor assembly receives signals from the rear airbag
sensor RH, it judges whether or
not the ...
