NAVIGATION SYSTEM(for HDD) Reverse Signal Circuit

DTC Code DTC Name
Reverse Signal Circuit

DESCRIPTION

The navigation ECU sub-assembly a reverse signal from the park/neutral position switch assembly*1 or back-up light switch assembly*2 to use for adjusting the vehicle position on the display.

  • *1: except Manual Transaxle

  • *2: for Manual Transaxle

WIRING DIAGRAM

E270422E01

PROCEDURE

  1. CHECK VEHICLE SIGNAL (OPERATION CHECK)

    1. E270655

      Enter the "Function Check/Setting I" mode and select "Vehicle Signal".

      Click here

    2. Check that the display changes between ON and OFF according to the shift lever position.

      OK

      Shift Lever Position

      Display

      R

      ON

      Except R

      OFF
      Tip:

      This display is updated once per second. As a result, it is normal for the display to lag behind the actual shift lever position.

    Result

    Proceed to

    OK

    NG
    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    Click here

    NG

  2. CHECK NAVIGATION ECU SUB-ASSEMBLY (REVERSE SIGNAL)

    1. E140414C07

      *a

      Front view of wire harness connector

      (to Navigation ECU Sub-assembly)

      Disconnect the navigation ECU sub-assembly connector.

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

      Standard Voltage

      Tester Connection

      Switch Condition

      Specified Condition

      G139-2 (REV) - Body ground

      Ignition switch ON, shift lever in R

      11 to 14 V

      G139-2 (REV) - Body ground

      Ignition switch ON, shift lever any position other than in R

      Below 1 V

    Result

    Proceed to

    OK

    NG (except Manual Transaxle)

    NG (for Manual Transaxle)
    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    Click here

    NG (for Manual Transaxle)

    CHECK HARNESS AND CONNECTOR (NAVIGATION ECU SUB-ASSEMBLY - BACK-UP LIGHT SWITCH ASSEMBLY)Click here

    NG (except Manual Transaxle)

  3. CHECK HARNESS AND CONNECTOR (NAVIGATION ECU SUB-ASSEMBLY - PARK/NEUTRAL POSITION SWITCH ASSEMBLY)

    1. Disconnect the G139 navigation ECU sub-assembly connector.

    2. Disconnect the B36 park/neutral position switch assembly connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      G139-2 (REV) - B36-2 (RL)

      Always

      Below 1 Ω

      G139-2 (REV) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH ASSEMBLY - BATTERY)

    1. E270424C01

      *a

      Front view of wire harness connector

      (to Park/Neutral Position Switch Assembly)

      Disconnect the park/neutral position switch assembly connector.

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

      Standard Voltage

      Tester Connection

      Switch Condition

      Specified Condition

      B36-1 (RB) - Body ground

      Ignition switch ON

      11 to 14 V

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY

    for K111F:

    Click here

    for U660F:

    Click here

    for U760E:

    Click here

    for U760F:

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  5. CHECK HARNESS AND CONNECTOR (NAVIGATION ECU SUB-ASSEMBLY - BACK-UP LIGHT SWITCH ASSEMBLY)

    1. Disconnect the G139 navigation ECU sub-assembly connector.

    2. Disconnect the B35 back-up light switch assembly connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      G139-2 (REV) - B35-1

      Always

      Below 1 Ω

      G139-2 (REV) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. CHECK HARNESS AND CONNECTOR (BACK-UP LIGHT SWITCH ASSEMBLY - BATTERY)

    1. E270423C01

      *a

      Front view of wire harness connector

      (to Back-up Light Switch Assembly)

      Disconnect the back-up light switch assembly connector.

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

      Standard Voltage

      Tester Connection

      Switch Condition

      Specified Condition

      B35-2 - Body ground

      Ignition switch ON

      11 to 14 V

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE BACK-UP LIGHT SWITCH ASSEMBLY

    for EA64:

    Click here

    for EA64F:

    Click here

    for EB61F:

    Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR