DYNAMIC RADAR CRUISE CONTROL SYSTEM ECU Power Source Circuit

DTC Code DTC Name
ECU Power Source Circuit

DESCRIPTION

This circuit provides power to operate the driving support ECU.

WIRING DIAGRAM

E178435E07

CAUTION / NOTICE / HINT

Note:

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

PROCEDURE

  1. CHECK HARNESS AND CONNECTOR (DRIVING SUPPORT ECU - BATTERY AND BODY GROUND)

    E178436C01

    *a

    Front view of wire harness connector(to Driving Support ECU)
    Note:

    A DTC is stored when the following inspection is performed. Be sure to clear the DTC after performing this inspection.

    1. Disconnect the G43 driving support ECU connector.

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

      Standard Voltage

      Tester Connection

      Switch Condition

      Specified Condition

      G43-30 (B) - Body ground

      Engine switch on (IG)

      11 to 14 V

      G43-30 (B) - Body ground

      Engine switch off

      Below 1 V

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

    Standard Resistance

    Tester Connection

    Condition

    Specified Condition

    G43-25 (GND) - Body ground

    Always

    Below 1 Ω

    Result

    Result

    OK

    NG
    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR