Toyota Sienna Service Manual: Terminals of ECU
1. RADIO RECEIVER (10 SPEAKER SYSTEM)
*1: with Rear Seat Entertainment System
2. RADIO RECEIVER (6 SPEAKER SYSTEM)
*1: with Rear Seat Entertainment System
*2: without Rear Seat Entertainment System
3. STEREO COMPONENT AMPLIFIER
4. TELEVISION DISPLAY ASSEMBLY
Problem symptoms table
HINT:
Before inspecting the suspected areas listed in the table
below, check the fuse and relay.
Before inspecting the suspected areas listed in the table
below, check for DTCs.
...
DTC check / clear
HINT: If the system cannot enter the diagnostic mode,
inspect all AVC-LAN communication signals and repair or replace problem parts.
1. STARTING DIAGNOSTIC MODE
Turn the ignition swit ...
Other materials:
Battery
Check the battery as follows:
Battery exterior
Make sure that the battery terminals are not corroded and that
there are no loose connections, cracks, or loose clamps.
Terminals
Hold-down clamp
Before recharging
When recharging, the battery produces hydrogen gas which is flammable an ...
Open in Stop Light Switch Circuit
DTC C1249/49 Open in Stop Light Switch Circuit
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
1 CHECK STOP LIGHT SWITCH OPERATION
(a) Check that the stop light comes on when the brake pedal
is depressed and goes off when the brake pedal is
released.
OK
HINT:
Check the stop li ...
Inspection
1. INSPECT INVERTER MAIN SWITCH
Inspect the continuity between terminal at the each
switch position shown in the chart.
If continuity is not as specified, replace the main
switch assembly.
Inspect the bulb state when connecting the battery
to each terminal
...
