Up to 08/2009

CRUISE CONTROL: DYNAMIC RADAR CRUISE CONTROL SYSTEM: P1575: Warning Buzzer Malfunction
P1575 - Warning Buzzer Malfunction

DESCRIPTION

The skid control ECU receives an alarm demand signal from the driving support ECU and operates the skid control buzzer. The buzzer sounds to warn that the distance between the vehicle in front and your own vehicle is decreasing.





HINT
If the vehicle ahead in the same lane significantly decreases its speed or another vehicle moves in front of your vehicle, adequate deceleration cannot be applied and the vehicle-to-vehicle distance will shorten. At this time, the system sounds the buzzer and the master warning light blinks to inform the driver. This circuit uses CAN communication. Therefore, if there are any malfunctions in the communication circuit, one or more DTCs in the CAN communication system are output.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. PERFORM ACTIVE TEST USING TECHSTREAM (SKID CONTROL BUZZER)

(a) Connect the Techstream to the DLC3.

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

(c) Turn the Techstream on.

(d) Enter the following menus: Chassis / ABS/VSC/TRAC / Active Test.

ABS/VSC/TRAC





(e) Select "Buzzer", and perform the Active Test.

OK:

Skid control buzzer sounds.

NG -- GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM Skid Control Buzzer Circuit

OK -- REPLACE ECM Components