THEFT DETERRENT SYSTEM > IG Power Source Circuit


DESCRIPTION

  1. When the engine switch is turned on (IG), positive (+) battery voltage is applied to the cowl side junction block RH (multiplex network body ECU).

WIRING DIAGRAM


B108831E01


INSPECTION PROCEDURE

1.CHECK BASIC FUNCTION (ENTRY AND START FUNCTION)

  1. Check that the basic function of the entry and start system operates normally.

    OK:
    Basic function operates normally.



NG
Go to ENTRY AND START SYSTEM
OK


2.INSPECT FUSE (AM2, ECU-IG RH)

  1. Remove the AM2 and ECU-IG RH fuses from the cowl side junction block.

  1. Measure the resistance of the fuses.

    Standard resistance:
    Below 1 Ω



NG
REPLACE FUSE
OK


3.CHECK WIRE HARNESS (COWL SIDE JUNCTION BLOCK RH - BATTERY)
B109163E02

  1. Disconnect the DM junction block connector.

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

    Standard voltage:
    Tester Connection
    		Specified Condition
    DM-1 - Body ground
    		10 to 14 V



NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK


4.CHECK COWL SIDE JUNCTION BLOCK RH
B108795

  1. Measure the voltage between the terminal of the connector and body ground.

    Standard voltage:
    Tester Connection
    		Specified Condition
    DD-4 - Body ground
    		10 to 14 V



NG
REPLACE COWL SIDE JUNCTION BLOCK RH
OK


5.CHECK WIRE HARNESS (COWL SIDE JUNCTION BLOCK RH - BODY GROUND)
B109160E02

  1. Disconnect the DD junction block connector.

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

    Standard resistance:
    Tester Connection
    		Specified Condition
    DD-7 - Body ground
    		Below 1 Ω



NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK


6.CHECK WIRE HARNESS (COWL SIDE JUNCTION BLOCK RH - POWER SOURCE CONTROL ECU)
B108796E03

  1. Disconnect the DD junction block connector.

  1. Disconnect the L73 ECU connector.

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

    Standard resistance:
    Tester Connection
    		Specified Condition
    DD-4 - L73-33 (AM1)
    		Below 1 Ω
    DD-6 - L73-34 (IG1D)
    		Below 1 Ω
    DD-4 or L73-33 (AM1) - Body ground
    		10 kΩ or higher
    DD-6 or L73-34 (IG1D) - Body ground
    		10 kΩ or higher



NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE PUSH-BUTTON START SYSTEM