Toyota Sienna Service Manual: Back Sonar Sensor LH Circuit
DESCRIPTION
An ultrasonic sensor consists of a sensor portion that transmits and receives ultrasonic waves and a preamplifier that amplifies them. The ultrasonic sensor outputs the ultrasonic waves and sends the received signals to the clearance warning ECU.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 INSPECT NO. 2 ULTRASONIC SENSOR
- Remove the No. 2 ultrasonic sensor.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
2 CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU - NO. 2 ULTRASONIC SENSOR)
- Disconnect the C9 connector from the clearance warning ECU.
- Disconnect the U3 connector from the No. 2 ultrasonic sensor.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
Speed Signal Circuit
DESCRIPTION
The clearance warning ECU receives the vehicle speed signal from the
combination meter.
HINT:
A voltage of 12 V or 5 V is output from each ECU and then input to
the combin ...
Back Sonar Sensor RH Circuit
DESCRIPTION
An ultrasonic sensor consists of a sensor portion that transmits and receives
ultrasonic waves and a preamplifier
that amplifies them. The ultrasonic sensor outputs the ultrasonic wave ...
Other materials:
Panel Switch Error/ Touch Switch Error
DTC 21-10 Panel Switch Error
DTC 21-11 Touch Switch Error
DTC 23-10 Panel Switch Error
DTC 23-11 Touch Switch Error
DTC 24-10 Panel Switch Error
DTC 24-11 Touch Switch Error
DTC 25-10 Panel Switch Error
DTC 25-11 Touch Switch Error
DESCRIPTION
INSPE ...
Adjustment
1. INSPECT SHIFT LEVER POSITION
(a) When shifting from P to R position only with ignition
switch ON and brake pedal, make sure that the
shifting lever moves smoothly and can be
moderately operated.
(b) When starting engine, make sure that the vehicle
moves forward when shifting from N to D p ...
If your vehicle overheats
The following may indicate that your vehicle is overheating.
The needle of the engine coolant temperature gauge
enters the red zone or a loss of engine power is experienced. (For
example, the vehicle speed does not increase.)
The warning message indicating overheats is shown on the
mult ...
