DYNAMIC RADAR CRUISE CONTROL SYSTEM > Wiper Signal Circuit

for Preparation Click here


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


E188028E10


INSPECTION PROCEDURE

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

1.INSPECT DRIVING SUPPORT ECU


    E178930E56

  1. Disconnect the driving support ECU connector.

  1. Turn the power switch on (IG).

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

  1. 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

    Text in Illustration 
    *a
    		Front view of wire harness connector
    (to Driving Support ECU)

  1. Reconnect the driving support ECU connector.



NG
Go to step 2
OK

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

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

  1. Disconnect the driving support ECU connector.

  1. Disconnect the windshield wiper switch assembly connector.

  1. 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

  1. Reconnect the driving support ECU connector.

  1. Reconnect the windshield wiper switch assembly connector.



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

GO TO WIPER AND WASHER SYSTEM (Click here)