Toyota Sienna Service Manual: AVC-LAN Circuit
DESCRIPTION
Each unit of the audio system connected to the AVC-LAN (communication bus) transfers the signal of each switch by communication.
When a short to +B or short to ground occurs in this AVC-LAN, the audio system will not function normally as the communication is discontinued.
INSPECTION PROCEDURE
1 INSPECT RADIO RECEIVER
- Disconnect the radio receiver connectors.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
*1: 10 Speaker System
2 CHECK HARNESS AND CONNECTOR
HINT: For details of the connectors, refer to the "TERMINALS OF ECU"
- Referring to the AVC-LAN wiring diagram below, check all AVC-LAN circuits.
- Disconnect all connectors in all AVC-LAN circuits.
- Check for an open or short in all AVC-LAN circuits.
OK: There is no open or short circuit
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
Mute Signal Circuit between Radio Receiver and Television Display
Assembly
DESCRIPTION
The radio receiver controls the volume according to the MUTE signal from the
television display
assembly.
The MUTE signal is sent to reduce noise and a popping sound generated when ...
Vehicle Speed Signal Circuit between Multi-display and Combination
Meter
DESCRIPTION
This circuit is necessary for the ASL (Auto Sound Leveliser) built into the
radio receiver.
Speed signals are received from the combination meter and used for the ASL.
The ASL fun ...
Other materials:
Air conditioning controls
Adjusting the temperature setting
Press “” on the “TEMP” button to
increase the temperature and “”
to decrease the temperature.
Adjusting the fan speed
Press “” on
to increase the fan speed and “”
to decrease
the fan speed.
Press the “OFF” button to turn the ...
Engine Coolant Temperature Circuit Range /
Performance Problem
DTC P0116 Engine Coolant Temperature Circuit Range /
Performance Problem
DESCRIPTION
Refer to DTC P0115
DTC No.
DTC Detection Condition
Trouble Area
P0116
ECTs as listed below are nearly same (2 trip detection
logic):
ECT when engine is start ...
Transfer oil
ON-VEHICLE INSPECTION
1. INSPECT TRANSFER OIL
(a) Remove the No. 1 plug and gasket.
(b) Check the oil level is within 0 - 5 mm (0 - 0.20 in.)
below the lowest end of the hole for No. 1 plug.
NOTICE:
When changing oil, recheck the oil level after
driving.
Excessively large or small ...
