Meter Illumination is Always Dark

DESCRIPTION

The combination meter assembly receives signals from this circuit to adjust the illumination of the combination meter assembly. The combination meter assembly sets the illumination level based on the user operation of the light control rheostat switch.

WIRING DIAGRAM


*1	Main Body ECU (Multiplex Network Body ECU)
*2	CAN Communication Line
*3	Combination Meter Assembly

CAUTION / NOTICE / HINT

Note

Before replacing the main body ECU (multiplex network body ECU), refer to Registration.

Click here

Tech Tips

The meter illumination dims when the taillights are turned on.
Setting the meter illumination level to maximum brightness cancels the above dimming of the meter illumination.
Setting the meter illumination level to minimum brightness turns off the meter illumination.
The automatic light control sensor sensitivity can be customized.

for Triple Beam Headlight: Click here

for Single Beam Headlight: Click here

PROCEDURE

CHECK CAN COMMUNICATION SYSTEM

Check if CAN communication DTCs are output.

for LHD: Click here

for RHD: Click here

Result

Result	Proceed to
CAN communication DTCs are not output.	A
CAN communication DTCs are output.	B

B

GO TO CAN COMMUNICATION SYSTEM for LHD: Click here
GO TO CAN COMMUNICATION SYSTEM for RHD: Click here

A

CHECK FOR DTC

Check if lighting system DTCs are output.

Click here

Body Electrical > Main Body > Trouble Codes

Result

Result	Proceed to
DTC B1244 is not output.	A
DTC B1244 is output.	B

B

GO TO DTC B1244 Click here

A

REPLACE COMBINATION METER ASSEMBLY

Replace the combination meter assembly with a new or known good one.

Click here

OK
The operation of the combination meter assembly returns to normal.

Result

Proceed to
OK
NG

OK

END

NG

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

METER / GAUGE SYSTEM Meter Illumination is Always Dark