LUGGAGE COMPARTMENT DOOR OPENER AND CLOSER SYSTEM > Driver Side J/B ECU Power Source Circuit

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DESCRIPTION

  1. This circuit provides power to operate the cowl side junction block ECU LH (LHD) and multiplex network body ECU (RHD).

    HINT:
    For LHD, the driver side junction block ECU is the cowl side junction block ECU LH. For RHD, the driver side junction block ECU is the multiplex network body ECU.


WIRING DIAGRAM


B107985E02


B107986E02


INSPECTION PROCEDURE

HINT:
The following inspection procedure is for LHD vehicles.

1.INSPECT FUSE (TRK OPN, MPX-B, D/C CUT)

  1. Remove the TRK OPN fuse from the cowl side junction block ECU LH.

  1. Remove the MPX-B and D/C CUT fuses from the engine room No. 1 relay block.

  1. Measure the resistance of the fuses.

    Standard resistance:
    Below 1 Ω



NG
REPLACE FUSE
OK


2.CHECK WIRE HARNESS (COWL SIDE JUNCTION BLOCK LH - BATTERY AND BODY GROUND)

B107445E02

  1. Disconnect the PM, PL, PA and PD junction block connectors.

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

    Standard voltage:
    Tester Connection
    		Specified Condition
    PM-1 (FUEL) - Body ground
    		10 to 14 V
    PL-1 (MPX-B) - Body ground
    		10 to 14 V

    Standard resistance:
    Tester Connection
    		Specified Condition
    PA-14 (GND) - Body ground
    		Below 1 Ω
    PD-8 (SGND) - Body ground
    		Below 1 Ω



NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE 


INSPECTION PROCEDURE

HINT:
The following inspection procedure is for RHD vehicles.

1.INSPECT FUSE (MPX-B, D/C CUT)

  1. Remove the MPX-B and D/C CUT fuses from the engine room No. 1 relay block.

  1. Measure the resistance of the fuses.

    Standard resistance:
    Below 1 Ω



NG
REPLACE FUSE
OK


2.CHECK WIRE HARNESS (COWL SIDE JUNCTION BLOCK RH - BATTERY AND BODY GROUND)
B107446E02

  1. Disconnect the DK and DD junction block connectors.

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

    Standard voltage:
    Tester Connection
    		Specified Condition
    DK-5 (BECU) - Body ground
    		10 to 14 V

    Standard resistance:
    Tester Connection
    		Specified Condition
    DD-7 (GND2) - Body ground
    		Below 1 Ω



NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE