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

*a	Windshield Wiper Switch Assembly
*b	Driving Support ECU Assembly

CAUTION / NOTICE / HINT

PROCEDURE

1. CHECK DRIVING SUPPORT ECU ASSEMBLY (WIP2 VOLTAGE)

   
   
   1. 

      Text in Illustration

      *a	Front view of wire harness connector (to Driving Support ECU Assembly)

      Disconnect the H75 driving support ECU assembly connector.

   2. Turn the power switch on (IG).

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

      Standard Voltage
      Tester Connection Condition Specified Condition H75-32 (WIP2) - Body ground Power switch on (IG), windshield wiper switch assembly HI position 11 to 14 V

   4. Reconnect the H75 driving support ECU assembly connector.

   
   

   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 H75 driving support ECU assembly connector.

   2. Disconnect the H25 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 H75-32 (WIP2) - H25-4 (+2) Always Below 1 Ω

      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition H75-32 (WIP2) or H25-4 (+2) - Body ground Always 10 kΩ or higher

   4. Reconnect the H25 windshield wiper switch assembly connector.

   5. Reconnect the H75 driving support ECU assembly connector.

   
   

   OK

   GO TO WIPER AND WASHER SYSTEM Click here

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR