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:
CD-ROM Abnormal/ CD-ROM Abnormal
DTC 62-43 CD-ROM Abnormal
DTC 63-43 CD-ROM Abnormal
DESCRIPTION
DTC No.
DTC Detecting Condition
Trouble Area
62-43
CD-ROM operation is abnormal
CD
Radio receiver
63-43
CD-ROM operation is abnormal
INSPECTION PROCEDURE
HIN ...
How to proceed with
troubleshooting
1 VEHICLE BROUGHT TO WORK SHOP
2 CUSTOMER PROBLEM ANALYSIS
3 CHECK BODY MULTIPLEX COMMUNICATION SYSTEM
Check for the DTC outputs.
4 DTC CHECK
5 DTC CHART
6 PROBLEM SYMPTOMS TABLE
7 TERMINAL OF ECU
8 CIRCUIT INSPECTION
9 IDENTIFICATION OF PROBLEM
10 REPAIR OR REPLACE
11 CONFIRMATION T ...
Removal
1. REMOVE FRONT DOOR LOWER FRAME BRACKET GARNISH
2. REMOVE FRONT DOOR INSIDE HANDLE BEZEL PLUG
3. REMOVE FRONT DOOR ARMREST BASE PANEL
ASSEMBLY
4. REMOVE BACK FRAME PLATE
5. REMOVE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY
6. REMOVE FRONT DOOR TRIM BOARD SUBASSEMBLY
7. REMOVE OUTER RE ...
