DYNAMIC RADAR CRUISE CONTROL SYSTEM Wiper Signal Circuit

DESCRIPTION

When the driving support ECU detects that the wipers are operating at high speed, the dynamic radar cruise control system will be canceled.

WIRING DIAGRAM

A00508CE15

CAUTION / NOTICE / HINT

Note

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

PROCEDURE


  1. INSPECT DRIVING SUPPORT ECU


    1. A004XRAE03
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Driving Support ECU)

      Disconnect the driving support ECU connector.

    2. Turn the power switch on (IG).

    3. Set the windshield wiper switch assembly to the HI position.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      H5-32 (WIP2) - Body ground Power switch on (IG), windshield wiper switch assembly Hi position 11 to 14 V

    5. Reconnect the driving support ECU connector.


    OK

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

    NG

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


    1. Disconnect the driving support ECU connector.

    2. Disconnect the windshield wiper switch assembly connector.

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

      Standard Resistance (for LH Side) (Check for Open)
      Tester Connection Condition Specified Condition
      H5-32 (WIP2) - H27-4 (+2) Always Below 1 Ω
      Standard Resistance (for RH Side) (Check for Open)
      Tester Connection Condition Specified Condition
      H5-32 (WIP2) - H27-1 (+2) Always Below 1 Ω
      Standard Resistance (for LH Side) (Check for Short)
      Tester Connection Condition Specified Condition
      H5-32 (WIP2) or H27-4 (+2) - Body ground Always 10 kΩ or higher
      Standard Resistance (for RH Side) (Check for Short)
      Tester Connection Condition Specified Condition
      H5-32 (WIP2) or H27-1 (+2) - Body ground Always 10 kΩ or higher

    4. Reconnect the driving support ECU connector.

    5. Reconnect the windshield wiper switch assembly connector.


    OK

    GO TO WIPER AND WASHER SYSTEM Click here

    NG

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