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

A01OCU2E17

CAUTION / NOTICE / HINT

Note

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

PROCEDURE


  1. CHECK WIPER AND WASHER SYSTEM


    1. Check the wiper and washer system operates normally.

      OK
      Wiper and washer system operates normally
      Result
      Proceed to
      OK
      NG

    NG

    GO TO WIPER AND WASHER SYSTEM Click here

    OK

  2. CHECK TERMINAL VOLTAGE (POWER SOURCE OF DRIVING SUPPORT ECU ASSEMBLY AND WIP2 TERMINAL)


    1. A01WXL1C85
      *a

      Rear view of wire harness connector

      (to Driving Support ECU Assembly)

      Disconnect the Q1 driving support ECU assembly connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      Q1-30 (B) - Body ground Power switch on (IG) 11 to 14 V
      Q1-30 (B) - Body ground Power switch off Below 1 V
      Q1-32 (WIP2) - Body ground Power switch on (IG), windshield wiper switch Hi 11 to 14 V
      Standard Resistance
      Tester Connection Condition Specified Condition
      Q1-25 (GND) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (DRIVING SUPPORT ECU ASSEMBLY - AUXILIARY BATTERY, BODY GROUND, WINDSHIELD WIPER MOTOR ASSEMBLY AND INT RELAY)