Toyota RAV4 manuals

Toyota Sienna Service Manual: Meter Illumination is Always Dark

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 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

Operating Light Control Rheostat does not Change Light Brightness
DESCRIPTION The meter CPU receives signals for adjusting illumination on the meter from this circuit. The meter CPU detects the illumination level selected by the user according to the position of ...

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 EC ...

Other materials:

Removal
1. REMOVE BATTERY 2. REMOVE AIR CLEANER ASSEMBLY HINT: (See page EM-26) 3. REMOVE SPEED SENSOR (NT SENSOR) (a) Disconnect the speed sensor connector. (b) Remove the bolt and speed sensor. 4. REMOVE SPEED SENSOR (NC SENSOR) (a) Disconnect the speed sensor connector. (b) Remove th ...

Diagnostic trouble code chart
If a trouble code is displayed during the DTCs check (sensor check), check the circuit listed for the code in the table below (Proceed to the page given for that circuit). AIR CONDITIONING SYSTEM HINT: *1: If the cabin temperature is approximately -18.6°C (- 3.7°F) or lo ...

On-vehicle inspection
1. CHECK SEAT HEATER CONTROL (WIRE HARNESS SIDE)  Disconnect the connector from the seat heater control.  Measure the voltage and resistance of each terminal of the wire harness side connector. Standard If the result is not as specified, there may be a malfunction on ...

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