PRE-CRASH SAFETY SYSTEM Pre-crash Safety System Switch Circuit

DESCRIPTION

Each time the pre-crash system cancel switch assembly is pressed, the multi-information display sensitivity setting display changes to switch the sensitivity of the pre-crash safety system between 3 levels. Also, when the switch is pressed and held, the pre-crash safety system cancels.

WIRING DIAGRAM

A004QQGE68
*a PCSW
*b Pre-crash System Cancel Switch Assembly
*c Pre-crash Safety City Sensor

CAUTION / NOTICE / HINT

Note


  • When replacing the pre-crash safety city sensor, replace it with a new one. If an ECU 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 output.

  • When replacing the pre-crash safety city sensor with a new one, or performing removal, installation or replacement of the windshield glass, always perform "Recognition Camera/ Target Position Memory" and "Beam Axis Learning".

    Perform adjustment with either "ONE TIME RECOGNITION" or "SEQUENTIAL RECOGNITION".


PROCEDURE


  1. INSPECT PRE-CRASH SYSTEM CANCEL SWITCH ASSEMBLY


    1. Remove the pre-crash system cancel switch assembly Click here.

    2. Inspect the pre-crash system cancel switch assembly Click here.


    NG

    REPLACE PRE-CRASH SYSTEM CANCEL SWITCH ASSEMBLY Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (PRE-CRASH SYSTEM CANCEL SWITCH ASSEMBLY - PRE-CRASH SAFETY CITY SENSOR AND BODY GROUND)


    1. Disconnect the D143 pre-crash system cancel switch assembly connector.

    2. Disconnect the K16 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
      D143-8 (ECU) - K16-9 (PCSW) Always Below 1 Ω
      D143-5 (GND) - Body ground Always Below 1 Ω
      D143-8 (ECU) - Body ground Always 100 kΩ or higher

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR