DYNAMIC RADAR CRUISE CONTROL SYSTEM Wiper Signal Circuit

DESCRIPTION

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

WIRING DIAGRAM

A0042ZLE08

INSPECTION PROCEDURE

Note

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

PROCEDURE


  1. INSPECT DRIVING SUPPORT ECU ASSEMBLY


    1. A0042MKE08
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Driving Support ECU assembly)

      Disconnect the driving support ECU assembly 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
      L54-32 (WIP2) - Body ground Power switch on (IG), windshield wiper switch assembly Hi position 11 to 14 V

    NG

    CHECK HARNESS AND CONNECTOR (DRIVING SUPPORT ECU ASSEMBLY - WINDSHIELD WIPER SWITCH) Click here

    OK

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

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


    1. Disconnect the windshield wiper switch assembly connector.

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      L54-32 (WIP2) - L38-4 (+2) Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      L54-32 (WIP2) or L38-4 (+2) - Body ground Always 10 kΩ or higher

    NG

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

    OK

    GO TO WIPER AND WASHER SYSTEM Click here