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Toyota Sienna Service Manual: Meter Illumination does not Dim at Night

Toyota Sienna Service Manual / Meter / Meter / gauge system / On-vehicle inspection / Meter Illumination does not Dim at Night

DESCRIPTION

WIRING DIAGRAM

WIRING DIAGRAM

INSPECTION PROCEDURE

1 CHECK MULTIPLEX COMMUNICATION SYSTEM

  1. Check if MULTIPLEX communication DTC is output

Result

Result

2 CHECK DTC

  1. Check if the DTC B1244 is output

Result

Result

3 PERFORM ACTIVE TEST BY INTELLIGENT TESTER

  1. Operate the intelligent tester according to the steps on the display and select "DATA LIST".

MAIN BODY

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:

Front Airbag Sensor LH Circuit Malfunction
DTC B1149/37 Front Airbag Sensor LH Circuit Malfunction DESCRIPTION The front airbag sensor LH circuit consists of the center airbag sensor assembly and front airbag sensor LH. If the center airbag sensor assembly receives signals from the front airbag sensor LH, it judges whether or not ...

On-vehicle inspection
1. INSPECT COOLER CONDENSER CORE (a) If the fin of the cooler condenser core is dirty, clean it with water and dry it with compressed air. NOTICE: Do not damage the fin of the cooler condenser core. (b) If the fin of the cooler condenser core is bent, make it straight using a screwdriver or p ...

Operation check
1. ILLUMINATED ENTRY SYSTEM OPERATION CHECK  The illuminated entry system is explained below:  Turn the ignition switch OFF, close all the doors, and set them in the lock condition.  Unlock any door and open any other doors and check that the room light comes on. Close ...

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