LIGHTING SYSTEM > Interior Light Circuit

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DESCRIPTION

The main body ECU (multiplex network body ECU) controls the front interior lights and rear interior light.

WIRING DIAGRAM


E220202E03


INSPECTION PROCEDURE

1.PERFORM ACTIVE TEST USING INTELLIGENT TESTER

  1. Connect the intelligent tester to the DLC3.

  1. Turn the power switch on (IG).

  1. Turn the intelligent tester on.

  1. Enter the following menus: Body / Main Body / Active Test.

  1. Check that the lights operate.

    Main Body 
    Tester Display
    		Test Part
    		Control Range
    		Diagnostic Note
    Illuminated Entry System
    		Front interior lights and rear interior light
    		ON/OFF
    		Interior light on/off switch off (not pushed), interior light door switch on (not pushed) and all doors closed

    OK:
    Each light fades in.



NG
Go to step 2
OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (Click here)  

2.CHECK HARNESS AND CONNECTOR (AUXILIARY BATTERY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)

  1. Disconnect the 2B instrument panel junction block assembly connector.

  1. Measure the voltage according to the value(s) in the table below.

    HINT:
    Perform the check under the following condition:
    1. Map light switch LH and RH off
    2. Interior light door switch in DOOR position

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    2B-27 - Body ground
    		Power switch off
    		11 to 14 V



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

  1. Remove the instrument panel junction block assembly (Click here).

  1. Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.



  1. Measure the resistance according to the value(s) in the table below.


    E173026E03


    Text in Illustration 
    *a
    		Component without harness connected
    (Instrument Panel Junction Block Assembly)
    		*b
    		Component without harness connected
    (Instrument Panel Junction Block Assembly)

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    2B-27 - A-1 (ILE)
    		Always
    		Below 1 Ω
    A-1 (ILE) - Body ground
    		Always
    		10 kΩ or higher



NG
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (Click here)
OK

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