Toyota Sienna Service Manual: MPX Body ECU Stop
DTC B1200 MPX Body ECU Stop
DESCRIPTION
This DTC is detected when communication between the multiplex network body ECU and the multiplex network gateway ECU stops for more than 10 seconds.
|
DTC No. |
DTC Detection Condition |
Trouble Area |
|
B1200 |
Body ECU communication stops |
|
WIRING DIAGRAM
INSPECTION PROCEDURE
1 CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK BODY ECU - BATTERY)
- Disconnect the 1A and 1C junction block connectors.
- Measure the voltage according to the value(s) in the table below.
Standard voltage
2 CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK BODY ECU - GROUND)
- Disconnect the 1K and 1L junction connectors.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
3 CHECK COMMUNICATION LINE
- Disconnect the A21, G4 and B7 ECU connectors.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
Result
REPLACE MULTIPLEX NETWORK BODY ECU
Diagnostic trouble code chart
If a malfunction code is displayed during the DTC check,
check the circuit listed for that code in the chart below
(Proceed to the page given for that circuit).
MULTIPLEX COMMUNICATION SYSTEM
...
Passenger Side Outer Mirror ECU
DTC B1208 Passenger Side Outer Mirror ECU
DESCRIPTION
This DTC is detected when communication between the outer mirror control ECU
RH and multiplex
network gateway ECU stops for more than 10 seco ...
Other materials:
Sound Signal Circuit between Radio and Navigation Assembly and
Television Display Assembly
DESCRIPTION
The television display assembly sends an RSE sound signal to the radio and
navigation assembly through
this circuit. The sound signal that has been sent is amplified by the stereo
component amplifier, and then
is sent to the speakers.
If there is an open or short in the circuit ...
Absence of Registration Unit/ No Response for Connection Check/ Last Mode
Error/ No Response Against ON / OFF Command/ Mode Status Error/ Slave Reset
DESCRIPTION
HINT:
*1: Even if no fault is present, this trouble code may be stored
depending on the battery condition or
engine start voltage.
*2: If the power connector is disconnected after the engine
starts, this code is stored after 180 seconds.
*3: If the ...
Short to B+ in Front Passenger Side Squib Circuit
DTC B0108/52 Short to B+ in Front Passenger Side Squib Circuit
DESCRIPTION
The front passenger side squib circuit consists of the center airbag sensor
assembly and the front
passenger airbag assembly.
The circuit instructs the SRS to deploy when deployment conditions are met.
DTC B0108/52 ...
