Toyota Sienna Service Manual: Meter Illumination does not Dim at Night
DESCRIPTION
- Confirm that the vehicle is equipped with the optitron meter, then check this circuit.
- The combination meter assembly receives a auto dimmer signal from the body ECU by the multiplex communication line.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 CHECK MULTIPLEX COMMUNICATION SYSTEM
- Check if MULTIPLEX communication DTC is output
Result
2 CHECK DTC
- Check if the DTC B1244 is output
Result
3 PERFORM ACTIVE TEST BY INTELLIGENT TESTER
- Operate the intelligent tester according to the steps on the display and select "DATA LIST".
MAIN BODY
OK: The meter illumination is dimmed when the DIMMER SIG is ON.
CHECK LIGHTING SETTING
4 REPLACE COMBINATION METER ASSEMBLY
OK: The operation of the combination meter assembly returns to normal.
END
Meter Illumination is Always Dark
DESCRIPTION
Confirm that the vehicle is equipped with the optitron meter, then
check this circuit.
The combination meter assembly receives a auto dimmer signal from the
body ECU by t ...
Combination meter
COMPONENTS
...
Other materials:
Assist grips
Type A
An assist grip installed on the ceiling
can be used to support your
body while sitting on the seat.
Type B
An assist grip installed on the pillar
can be used when getting in
or out of the vehicle and others.
WARNING
Type A: Do not use the assist grip when g ...
Installation
1. INSTALL FOG LIGHT ASSEMBLY
Install the fog light assembly with the 2 claws and 2
pins.
2. INSTALL FRONT BUMPER ASSEMBLY
3. CONNECT CABLE TO NEGATIVE BATTERY
TERMINAL
4. VEHICLE PREPARATION FOR FOG LIGHT AIMING
5. PREPARATION FOR FOG LIGHT AIMING
6. FOG LIGHT AIMING INSPECT ...
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 switch to the ACC position.
Turn off the audio system.
While pressing the preset switche ...
