Toyota Sienna Service Manual: Television Display Assembly Communication Error
INSPECTION PROCEDURE
1 IDENTIFY THE COMPONENT SHOWN BY THE SUB-CODE

- Enter the diagnostic mode.
- Press the "LAN Mon" switch to change to "LAN Monitor"
mode.
- Identify the component shown by the sub-code.
HINT:
- "110 (multi-display)" is the component shown by the
sub-code in the example shown in the illustration.
- The sub-code will be indicated by its physical
address.
- For the component list, refer to "DIAGNOSIS
DISPLAY DETAILED DESCRIPTION"
2 CHECK POWER SOURCE CIRCUIT OF COMPONENT SHOWN BY SUB-CODE
- Inspect the power source circuit of the component shown
by the sub-code.
If the power source circuit is operating normally, proceed
to the next step.
Component Table:

3 INSPECT RADIO AND NAVIGATION ASSEMBLY

- Disconnect the radio and navigation assembly
connectors.
- Measure the resistance according to the value(s) in the
table below.
Standard resistance

4 CHECK HARNESS AND CONNECTOR
HINT:
- Start the check from the circuit that is near the component
shown by the sub-code first.
- For details of the connectors, refer to "TERMINALS OF ECU".
- Referring to the AVC-LAN wiring diagram below, check
the AVC-LAN circuit between the television display
assembly and the component shown by the sub-code.
- Disconnect all connectors between the television
display assembly and the component shown by
sub-code.
- Check for an open or short in the AVC-LAN circuit
between the television display assembly and the
component shown by the sub-code.

OK:
There is no open or short circuit.
5 REPLACE COMPONENT SHOWN BY SUB-CODE
- Replace the component shown by the sub-code with a
normal one and check if the same problem occurs again.
OK:
Same problem does not occur
END
INSPECTION PROCEDURE
1 IDENTIFY THE COMPONENT SHOWN BY THE SUB-CODE
Enter the diagnostic mode.
Press the "LAN Mon" switch to change to "LAN Monitor"
mode.
&nbs ...
DESCRIPTION
This circuit provides power to the stereo component amplifier.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 INSPECT STEREO COMPONENT AMPLIFIER
Disconnect the stereo component ampl ...
Other materials:
Communication Error from ECM to Distance
Control ECU
DTC P1616 Communication Error from ECM to Distance
Control ECU
DTC U0100 Lost Communication with ECM/PCM "A"
DESCRIPTION
The ECM receives signals from each sensor and ECU, then sends signals such as
A/T signals, cruise
control operation signals, low speed operation signals, brake co ...
Diagnosis system
1. CHECK DLC3
The vehicle's ECU uses ISO 15765-4 for
communication protocol. The terminal arrangement
of the DLC3 complies with SAE J1962 and matches
the ISO 15765-4 format.
NOTICE:
*: Before measuring the resistance, leave the
vehicle as is for at least 1 minute and do not
...
Inspection
1. INSPECT REAR SPEED SENSOR
(a) Remove the seat cushion and seatback.
(b) Disconnect the speed sensor connector.
(c) Measure the resistance between terminals 1 and 2
of the speed sensor connector
OK:
Resistance:
1.1 +- 0.2 kΩ at 25 +- 5 °C
(d) Measure the resistance between ea ...