THEFT DETERRENT SYSTEM > ECU Power Source Circuit


DESCRIPTION

This circuit provides power for multiplex network body ECU operation.

WIRING DIAGRAM


B109004E02


INSPECTION PROCEDURE

1.INSPECT FUSE (ECU-B NO.1)

  1. Remove the ECU-B NO.1 fuse from the fusible link block.

  1. Measure the resistance.

    Resistance:
    Below 1 Ω



NG
REPLACE FUSE
OK


2.CHECK INSTRUMENT PANEL J/B ASSEMBLY (MULTIPLEX NETWORK BODY ECU) (POWER SOURCE)

  1. Install the ECU-B NO.1 fuse to the fusible link block.



    B110545E01

  1. Disconnect the 1D J/B connector.

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

    Voltage:
    Symbol (Tester Connection)
    		Specified Condition
    BECU (1D-10) - Body ground
    		10 to 14 V



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL J/B - BODY GROUND)


    B110543E01

  1. Disconnect the 1F and 1M J/B connectors.

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

    Resistance:
    Symbol (Tester Connection)
    		Specified Condition
    GND1 (1F-10) - Body ground
    		Below 1 Ω
    GND2 (1M-9) - Body ground



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE INSTRUMENT PANEL J/B ASSEMBLY