Toyota Sienna Service Manual: 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.
|
DTC No. |
DTC Detection Condition |
Trouble Area |
|
P1575 |
The ECM receives a buzzer abnormal signal for 0.2 sec. or more while the dynamic laser cruise control is in operation |
|
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
Refer to the skid control buzzer circuit
INSPECTION PROCEDURE
Refer to the skid control buzzer circuit
Improper Aiming of Radar Sensor Beam Axis
DTC P1572 Improper Aiming of Radar Sensor Beam Axis
DESCRIPTION
This DTC is output when the scanning angle of the laser sensor is incorrect.
This DTC is also output when
the laser sensor beam axi ...
Brake System Malfunction
DTC P1578 Brake System Malfunction
DESCRIPTION
This DTC is output when the VSC system has a problem. Check the VSC system
when this DTC is
output
DTC No.
DTC Detection Conditio ...
Other materials:
Rear Airbag Sensor LH Circuit Malfunction
DTC B1155/39 Rear Airbag Sensor LH Circuit Malfunction
DESCRIPTION
The rear airbag sensor LH circuit consists of the center airbag sensor
assembly and rear airbag sensor
LH.
If the center airbag sensor assembly receives signals from the rear airbag
sensor LH, it judges whether or
not the ...
Torque Converter Clutch Solenoid Circuit
DESCRIPTION
The shift solenoid valve DSL is turned "ON" and "OFF" by signals from the ECM
in order to control the
hydraulic pressure operation, the lock-up relay valve, which then controls
operation of the lock-up clutch.
MONITOR DESCRIPTION
Torque converter lock-up i ...
Installation
HINT:
Install the RH side by the same procedure as the LH side.
1. INSTALL REAR SPEED SENSOR
(a) Clean the contacting surface of the axle hub and a
new skid control sensor.
NOTICE:
Keep the sensor rotor clean.
(b) Place the speed sensor on the axle hub so that the
connector is positioned ...
