NAVIGATION SYSTEM Reverse Signal Circuit

DTC Code DTC Name
Reverse Signal Circuit

DESCRIPTION

The radio and display receiver assembly receives a reverse signal from the park/neutral position switch assembly*1 or back-up light switch assembly*2.

  • *1: except Manual Transaxle

  • *2: for Manual Transaxle

WIRING DIAGRAM

U124073E02

CAUTION / NOTICE / HINT

Note:

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

  • Check that the wire harness is properly installed and does not have any sharp bends, pinching or loose connections (Click here).

PROCEDURE

  1. CHECK VEHICLE SIGNAL (OPERATION CHECK)

    1. E278094

      Enter the "Vehicle Signal Check Mode" screen. [Refer to check Vehicle Signal in Operation Check (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.

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    (Click here)

  2. CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY

    1. U123653E02

      Disconnect the radio and display receiver assembly connector.

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

      Standard Voltage

      Tester Connection

      Switch Condition

      Specified Condition

      H105-2 (REV) - Body ground

      Ignition switch ON, shift lever in R

      7.5 to 14 V

      H105-2 (REV) - Body ground

      Ignition switch ON, shift lever not in R

      Below 1 V
      Table 1. Text in Illustration

      *a

      Front view of wire harness connector

      (to Radio and Display Receiver Assembly)
      Table 2. Result

      Result

      Proceed to

      OK

      A

      NG (except Manual Transaxle)

      B

      NG (for Manual Transaxle)

      C

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

    (Click here)

    CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - BACK-UP LIGHT SWITCH ASSEMBLY)Click here

  3. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - PARK/NEUTRAL POSITION SWITCH ASSEMBLY)

    1. Disconnect the H105 radio and display receiver assembly connector.

    2. Disconnect the C23 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

      H105-2 (REV) - C23-2 (RL)

      Always

      Below 1 Ω

      H105-2 (REV) - Body ground

      Always

      10 kΩ or higher

    REPAIR OR REPLACE HARNESS OR CONNECTOR

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

    1. U124051E02

      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

      C23-1 (RB) - Body ground

      Ignition switch ON

      11 to 14 V
      Table 3. Text in Illustration

      *a

      Front view of wire harness connector

      (to Park/neutral Position Switch Assembly)

    REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY

    (Click here)

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  5. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - BACK-UP LIGHT SWITCH ASSEMBLY)

    • *1: except 1WW

    • *2: for 1WW

    1. Disconnect the H105 radio and display receiver assembly connector.

    2. Disconnect the C7*1 or D4*2 back-up light switch assembly connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      H105-2 (REV) - C7-1 (RL)*1

      Always

      Below 1 Ω

      H105-2 (REV) - D4-1 (RL)*2

      Always

      Below 1 Ω

      H105-2 (REV) - Body ground

      Always

      10 kΩ or higher

    REPAIR OR REPLACE HARNESS OR CONNECTOR

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

    • *1: except 1WW

    • *2: for 1WW

    1. U124050E02

      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

      C7-2 (RB) - Body ground*1

      Ignition switch ON

      11 to 14 V

      D4-2 (RB) - Body ground*2

      Ignition switch ON

      11 to 14 V
      Table 4. Text in Illustration

      *A

      except 1WW

      *B

      for 1WW

      *a

      Front view of wire harness connector

      (to Back-up Light Switch Assembly)
      Table 5. Result

      Result

      Proceed to

      OK (for EA65 Manual Transaxle)

      A

      OK (for EC61 Manual Transaxle)

      B

      OK (for EC62 Manual Transaxle)

      C

      NG

      D

    REPLACE BACK-UP LIGHT SWITCH ASSEMBLY

    (Click here)

    REPLACE BACK-UP LIGHT SWITCH ASSEMBLY

    (Click here)

    REPLACE BACK-UP LIGHT SWITCH ASSEMBLY

    (Click here)

    REPAIR OR REPLACE HARNESS OR CONNECTOR