LIGHTING SYSTEM Footwell Light Circuit

DESCRIPTION

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

WIRING DIAGRAM

A004ZBAE02

CAUTION / NOTICE / HINT

Note

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE


  1. PERFORM ACTIVE TEST USING INTELLIGENT TESTER


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the intelligent tester on.

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

    5. 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.

    OK

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

    NG

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


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

    2. 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.

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

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

      A004XUPE02
      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

    OK

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

    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here