NAVIGATION SYSTEM Reverse Signal Circuit

DESCRIPTION

The navigation ECU receives a reverse signal from the multi-display and information from the GPS antenna, and then adjusts vehicle position.

WIRING DIAGRAM

A0162TWE03

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK BACK-UP LIGHT


    1. Move the shift lever to R and check if the back-up lights come on.

      OK
      The back-up lights come on.

    NG

    GO TO LIGHTING SYSTEM Click here

    OK

  2. CHECK VEHICLE SIGNAL (DISPLAY CHECK MODE)


    1. A0161ICE02

      Enter the "Display Check" mode (Vehicle Signal Check Mode) Click here.

    2. Check that the display changes between ON and OFF according to the shift lever operation (P and R).

      OK
      Shift Lever Position Display
      Reverse ON
      Except Reverse OFF

      Tech Tips

      This display is updated once per second. As a result, it is normal for the display to lag behind the actual change in the switch.


    NG

    INSPECT MULTI-DISPLAY Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (NAVIGATION ECU - MULTI-DISPLAY)


    1. A01633EE02

      Disconnect the multi-display connector and navigation ECU connector.

    2. A0161Y3E03

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      p1-15 (REV2) - p2-20 (REV) Always Below 1 Ω
      p1-15 (REV2) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT NAVIGATION ECU


    1. A0161Y3E03

      Reconnect the multi-display connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      p2-20 (REV) - Body ground

      Engine switch on (IG).

      Shift lever is moved to R.

      		 11 to 14 V
      p2-20 (REV) - Body ground

      Engine switch on (IG).

      Shift lever is moved to any position except R.

      		 Below 1 V

    NG

    REPLACE MULTI-DISPLAY Click here

    OK

    REPLACE NAVIGATION ECU Click here

  5. INSPECT MULTI-DISPLAY


    1. A0161DPE05

      Disconnect the multi-display connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      J50-13 (REV) - Body ground

      Engine switch on (IG).

      Shift lever is moved to R.

      		 11 to 14 V
      J50-13 (REV) - Body ground

      Engine switch on (IG).

      Shift lever is moved to any position except R.

      		 Below 1 V

    NG

    CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY - MAIN BODY ECU LH) Click here

    OK

    REPLACE MULTI-DISPLAY Click here

  6. CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY - MAIN BODY ECU LH)


    1. A0161DPE05

      Disconnect the multi-display connector and main body ECU LH (cowl side junction block LH) connector.

    2. A0162KUE03

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      J50-13 (REV) - Q2-2 (BACK) Always Below 1 Ω
      J50-13 (REV) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. CHECK HARNESS AND CONNECTOR (JUNCTION CONNECTOR - MAIN BODY ECU LH)


    1. A0162AZE02

      Disconnect the main body ECU LH (cowl side junction block LH) connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      LJ-23 (BKUP) - Body ground

      Engine switch on (IG).

      Shift lever is moved to R.

      		 11 to 14 V
      LJ-23 (BKUP) - Body ground

      Engine switch on (IG).

      Shift lever is moved to any position except R.

      		 Below 1 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE MAIN BODY ECU LH