Wiper Signal Circuit

CRUISE CONTROL: DYNAMIC RADAR CRUISE CONTROL SYSTEM: Wiper Signal Circuit
- 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





INSPECTION PROCEDURE

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

PROCEDURE

1. INSPECT DRIVING SUPPORT ECU

(a) Disconnect the driving support ECU connector.





(b) Turn the power switch on (IG).

(c) Set the windshield wiper switch assembly to the HI position.

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

Standard Voltage:





Text in Illustration





(e) Reconnect the driving support ECU connector.

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

OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Dynamic Radar Cruise Control System

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

(a) Disconnect the driving support ECU connector.





(b) Disconnect the windshield wiper switch assembly connector.

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

Standard Resistance (Check for Open):





Standard Resistance (Check for Short):





Text in Illustration





(d) Reconnect the driving support ECU connector.

(e) 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 How To Proceed With Troubleshooting