LIGHTING SYSTEM > Footwell Light Circuit

for Preparation Click here


DESCRIPTION

The main body ECU (multiplex network ECU) controls the footwell lights.

WIRING DIAGRAM


E220203E02


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 footwell lights come on.

    Main Body 
    Tester Display
    		Test Part
    		Control Range
    		Diagnostic Note
    Fr Foot Light
    		Footwell lights
    		ON/OFF
    		Power switch off

    OK:
    Footwell lights come on.



NG
Go to step 2
OK

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

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

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

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

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    2B-17 - Body ground
    		Power switch off
    		11 to 14 V
    2B-18 - 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.


    E173026E04


    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-17 - A-26 (FSPT)
    		Always
    		Below 1 Ω
    2B-18 - A-26 (FSPT)
    		Always
    		Below 1 Ω
    A-26 (FSPT) - 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)