PRE-CRASH SAFETY SYSTEM Pre-crash Safety System Circuit

DESCRIPTION

When the power switch is on (IG), power is supplied to the pre-crash safety city sensor.

WIRING DIAGRAM

A01KS0PE54
*1 from IG1 NO. 1 Relay
*2 ECU-IG1 NO. 3
*3 Pre-crash Safety City Sensor

CAUTION / NOTICE / HINT

Note

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

PROCEDURE


  1. INSPECT AUXILIARY BATTERY VOLTAGE


    1. Measure the auxiliary battery voltage with the power switch off.

      Standard voltage
      11 to 14 V

    2. Using the parts location and system diagram, check the system for blown-out fuses, open or short circuits in the wire harness(es) and connectors that are not properly connected by performing a visual check.

      Tech Tips

      If the voltage is 11 V or less, replace or recharge the auxiliary battery before proceeding to the next step.

      Result
      Proceed to
      NEXT

    NEXT

  2. 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. A01KRHUC26
        *a

        Front view of wire harness connector

        (to Pre-crash Safety City Sensor)

        Disconnect the O9 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
        O9-7 (IG1) - Body ground Power switch on (IG) 11 to 14 V
        O9-7 (IG1) - Body ground Power switch off Below 1 V

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        O9-10 (GND) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK CAN COMMUNICATION SYSTEM


    1. Use the GTS to check if the CAN communication system is functioning normally.

      Click here

      Result
      Result Proceed to
      CAN communication system DTCs are not output A
      CAN communication system DTCs are output B

    A

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

    B

    GO TO CAN COMMUNICATION SYSTEM Click here