PRE-CRASH SAFETY SYSTEM Reverse Signal Circuit

DTC Code DTC Name
Reverse Signal Circuit

DESCRIPTION

While the vehicle is driven with the shift lever in R, the buck-up light switch assembly sends a reverse signal to terminal (SPR) of the pre-crash safety city sensor. The pre-crash safety city sensor cancels pre-crash safety system when terminal (SPR) receives the reverse signal.

WIRING DIAGRAM

B408550E05

CAUTION / NOTICE / HINT

Note:

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

  • When replacing the pre-crash safety city sensor, replace it with a new one and be sure to initialize the settings. If a pre-crash safety city sensor which was installed to another vehicle is used, the information stored in the pre-crash safety city sensor will not match the information from the vehicle and, as a result, a DTC may be stored.

  • If the pre-crash safety city sensor has been replaced, or the windshield glass has been replaced or removed/installed, be sure to perform Recognition Camera/Target Position Memory and Recognition Camera Axis Adjust.

    Click here

PROCEDURE

  1. CHECK PRE-CRASH SAFETY CITY SENSOR

    1. Check pre-crash safety city sensor.

      Note:

      DTCs may be output when connectors are disconnected during inspection. Therefore, make sure to clear the DTCs using the GTS once the inspection has been completed.

      1. E255432C31

        *a

        Front view of wire harness connector

        (to Pre-crash Safety City Sensor)

        Disconnect the pre-crash safety city sensor connector.

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

        Standard Voltage

        Tester Connection

        Condition

        Specified Condition

        O9-1 (SPR) - Body ground

        Ignition switch ON, shift lever in R

        11 to 14 V

        O9-1 (SPR) - Body ground

        Ignition switch ON, shift lever not in R

        Below 1 V

    Result

    Proceed to

    OK

    NG
    OK

    USE SIMULATION METHOD TO CHECK

    Click here

    NG

  2. CHECK HARNESS AND CONNECTOR (BACK-UP LIGHT SWITCH ASSEMBLY - PRE-CRASH SAFETY CITY SENSOR)

    1. Disconnect the B38 back-up light switch assembly connector.

    2. Disconnect the O9 pre-crash safety city sensor connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      B38-1 - O9-1 (SPR)

      Always

      Below 1 Ω

      B38-1 - Body ground

      Always

      10 kΩ or higher

      O9-1 (SPR) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK HARNESS AND CONNECTOR (BACK-UP LIGHT SWITCH ASSEMBLY POWER SORCE)

    1. Disconnect the B38 back-up light switch assembly connector.

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

      Standard Voltage

      Tester Connection

      Condition

      Specified Condition

      B38-2 - Body ground

      Ignition switch ON

      11 to 14 V

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT BACK-UP LIGHT SWITCH ASSEMBLY

    1. Inspect the back-up light switch assembly.

      for EC6A:Click here

      for EC60:Click here

      for EC61:Click here

      for EC69:Click here

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE PRE-CRASH SAFETY CITY SENSOR

    Click here

    NG

    REPLACE BACK-UP LIGHT SWITCH ASSEMBLY

    for EC6A:Click here

    for EC60:Click here

    for EC61:Click here

    for EC69:Click here