P1575

CRUISE CONTROL: DYNAMIC LASER CRUISE CONTROL SYSTEM: P1575: Warning Buzzer Malfunction

DTC P1575 - Warning Buzzer Malfunction

DESCRIPTION

The ABS & traction actuator (skid control ECU) receives an alarm demand signal from the ECM 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 Techstream to the DLC3.
(b) Start the engine.
(c) Select the item "Buzzer" in the Active Test and operate the skid control buzzer on Techstream.

ABS / VSC / TRAC:

(d) Check that skid control buzzer sounds by operating with Techstream.
OK:
The skid control buzzer sounds in accordance with operation of Techstream.
NG -- INSPECT SKID CONTROL BUZZER
OK -- REPLACE BRAKE ACTUATOR ASSEMBLY
2. INSPECT SKID CONTROL BUZZER
(a) Disconnect the skid control buzzer connector.

(b) Apply battery negative voltage to terminal 1, and battery positive voltage to terminal 2 of the skid control buzzer connector, and check that the buzzer sounds.
OK:
The skid control buzzer sound should be heard.
NG -- REPLACE SKID CONTROL BUZZER
OK -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (SKID CONTROL BUZZER - SKID CONTROL ECU)
(a) Disconnect the skid control buzzer connector and the skid control ECU connector.

(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:

NOTE: When replacing the brake actuator assembly, perform zero point calibration

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE BRAKE ACTUATOR ASSEMBLY