DYNAMIC RADAR CRUISE CONTROL SYSTEM Wiper Signal Circuit

DESCRIPTION

When the driving support ECU assembly detects that the wipers are operating at high speed, control of vehicle speed by the dynamic radar cruise control system is canceled.

WIRING DIAGRAM

A018J5LE14
*a WIPER-S
*b Windshield Wiper Switch Assembly
*c Driving Support ECU Assembly

CAUTION / NOTICE / HINT

Note

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

PROCEDURE


  1. CHECK DRIVING SUPPORT ECU ASSEMBLY (WIP2 VOLTAGE)


    1. B003YXEC03
      *a

      Front view of wire harness connector

      (to Driving Support ECU Assembly)

      Disconnect the F84 driving support ECU assembly connector.

    2. Turn the engine switch on (IG).

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      F84-32 (WIP2) - Body ground Engine switch on (IG), windshield wiper switch assembly HI position 11 to 14 V

    4. Turn the engine switch off.

    5. Reconnect the F84 driving support ECU assembly connector.

      Result
      Proceed to
      OK
      NG

    OK

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

    NG

  2. CHECK HARNESS AND CONNECTOR (DRIVING SUPPORT ECU ASSEMBLY - WINDSHIELD WIPER SWITCH ASSEMBLY)


    1. Disconnect the F84 driving support ECU assembly connector.

    2. Disconnect the F64 windshield wiper switch assembly connector.

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      F84-32 (WIP2) - F64-4 (+2) Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      F84-32 (WIP2) or F64-4 (+2) - Body ground Always 10 kΩ or higher

    4. Reconnect the F64 windshield wiper switch assembly connector.

    5. Reconnect the F84 driving support ECU assembly connector.

      Result
      Proceed to
      OK
      NG

    OK

    GO TO WIPER AND WASHER SYSTEM Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (DRIVING SUPPORT ECU ASSEMBLY - WINDSHIELD WIPER SWITCH ASSEMBLY)