NAVIGATION SYSTEM(for HDD) Navigation Receiver Assembly Power Source Circuit

DTC Code DTC Name
Navigation Receiver Assembly Power Source Circuit

DESCRIPTION

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

WIRING DIAGRAM

E269549E05

CAUTION / NOTICE / HINT

Note:

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

PROCEDURE

  1. CONFIRM MODEL

    1. Choose the model to be inspected.

    Result

    Proceed to

    w/o Stop and Start System

    w/ Stop and Start System
    w/ Stop and Start System

    CHECK HARNESS AND CONNECTOR (NAVIGATION ECU SUB-ASSEMBLY - ENGINE STOP AND START ECU)Click here

    w/o Stop and Start System

  2. CHECK HARNESS AND CONNECTOR (NAVIGATION ECU SUB-ASSEMBLY - BATTERY AND BODY GROUND)

    1. E256516C06

      *a

      Front view of wire harness connector

      (to Navigation ECU Sub-assembly)

      Disconnect the navigation ECU sub-assembly connectors.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      G137-7 (GND1) - Body ground

      Always

      Below 1 Ω

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

      Standard Voltage

      Tester Connection

      Condition

      Specified Condition

      G137-4 (+B1) - G137-7 (GND1)

      Always

      11 to 14 V

      G137-3 (ACC1) - G137-7 (GND1)

      Ignition switch ACC

      11 to 14 V

      G139-1 (IG) - G137-7 (GND1)

      Ignition switch ON

      11 to 14 V

    Result

    Proceed to

    OK

    NG
    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  3. CHECK HARNESS AND CONNECTOR (NAVIGATION ECU SUB-ASSEMBLY - ENGINE STOP AND START ECU)

    1. Disconnect the G137 navigation ECU sub-assembly connector.

    2. Disconnect the G87 engine stop and start ECU connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      G137-3 (ACC1) - G87-3 (ACO)

      Always

      Below 1 Ω

      G137-4 (+B1) - G87-2 (BO1)

      Always

      Below 1 Ω

      G137-3 (ACC1) - Body ground

      Always

      10 kΩ or higher

      G137-4 (+B1) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK ENGINE STOP AND START ECU

    E259248C07

    *a

    Front view of wire harness connector

    (to Navigation ECU Sub-assembly)

    1. Disconnect the navigation ECU sub-assembly connector.

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

      Standard Voltage

      Tester Connection

      Condition

      Specified Condition

      G137-3 (ACC1) - Body ground

      Ignition switch ACC

      10.5 to 14 V

      G137-4 (+B1) - Body ground

      Always

      10.5 to 14 V

    Result

    Proceed to

    OK

    NG
    NG

    GO TO GO TO STOP AND START SYSTEM

    Click here

    OK

  5. CHECK HARNESS AND CONNECTOR (NAVIGATION ECU SUB-ASSEMBLY - BATTERY AND BODY GROUND)

    1. E256516C01

      *a

      Front view of wire harness connector

      (to Navigation ECU Sub-assembly)

      Disconnect the navigation ECU sub-assembly connectors.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      G137-7 (GND1) - Body ground

      Always

      Below 1 Ω

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

      Standard Voltage

      Tester Connection

      Switch Condition

      Specified Condition

      G139-1 (IG) - G137-7 (GND1)

      Ignition switch ON

      11 to 14 V

    Result

    Proceed to

    OK

    NG
    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR