Toyota Sienna Service Manual: AVC-LAN Circuit
DESCRIPTION
Each unit of the navigation 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 navigation system will not function normally as the communication is discontinued.
INSPECTION PROCEDURE
1 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
2 CHECK HARNESS AND CONNECTOR
HINT: For details of the connectors, refer to "TERMINALS OF ECU".
- Referring to the AVC-LAN wiring diagram below, check 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 and Navigation Assembly and
Stereo Component Amplifier
DESCRIPTION
This circuit sends a signal to the stereo component amplifier to mute noise.
Because of that, the noise
produced by changing the sound source ceases.
If there is an open in the circ ...
Reverse Signal Circuit
DESCRIPTION
The radio and navigation assembly receives a reverse signal from the
park/neutral position switch and
information about the GPS antenna, and then adjusts vehicle position.
WIRING DIAG ...
Other materials:
Map Disc Read Error
DTC 58-42 Map Disc Read Error
DTC 80-42 Map Disc Read Error
DESCRIPTION
DTC No.
DTC Detection Condition
Trouble Area
58-42
Player error
Scratches or dirt on the disc
Access to an invalid address due to software error
...
Removal
1. REMOVE BACK DOOR CENTER GARNISH (See page
ET-18)
2. REMOVE POWER BACK DOOR ROD (See page ED-
220)
3. REMOVE BACK DOOR LH SIDE GARNISH
4. REMOVE BACK DOOR RH SIDE GARNISH
5. REMOVE BACK DOOR PULL STRAP (See page ED-
221)
6. REMOVE BACK DOOR TRIM BOARD ASSEMBLY
7. REMOVE LH BACK-UP LIGH ...
Eject Error/ Elevator Error/ Clamp Error
DTC 44-45 Eject Error
DTC 44-51 Elevator Error
DTC 44-52 Clamp Error
DESCRIPTION
DTC No.
DTC Detecting Condition
Trouble Area
44-45
Disc cannot be ejected.
Television display assembly
44-51
Mechanical error occurs during elevator operation.
...
