NAVIGATION SYSTEM > Dimmer Signal Circuit

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DESCRIPTION

The multi-display dims by receiving the dimmer signal from the cowl side junction block ECU LH.

WIRING DIAGRAM


E107359E03


INSPECTION PROCEDURE

1.CHECK COWL SIDE JUNCTION BLOCK LH
E109538E01

  1. Measure the voltage of the connector.

    Standard voltage:
    Tester Connection
    		Condition
    		Specified Condition
    PD-20 (ILL) - Body ground
    		Light control switch ON
    		10 to 14 V



NG
REPLACE COWL SIDE JUNCTION BLOCK LH
OK


2.CHECK MULTI-DISPLAY


    E108382E02

  1. Disconnect the L46 multi-display connector.

  1. Measure the voltage of the wire harness side connector.

    Standard voltage:
    Tester Connection
    		Condition
    		Specified Condition
    L46-12 (ILL+) - Body ground
    		Light control switch ON
    		10 to 14 V



NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK


3.CHECK WIRE HARNESS (MULTI-DISPLAY - COMBINATION METER)
E108186E04

  1. Disconnect the L46 multi-display connector.

  1. Disconnect the L31 meter connector.

  1. Measure the resistance of the wire harness side connectors.

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    L46-11 (ILL-) - L31-30 (TR)
    		Always
    		Below 1 Ω
    L46-11 (ILL-) - Body ground
    		Always
    		10 kΩ or higher



NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK


4.REPLACE COMBINATION METER

  1. Replace the combination meter with a normal one and check if the same problem occurs again.

    OK:
    Same problem does not occur.



NG
REPLACE MULTI-DISPLAY
OK

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