Toyota Sienna Service Manual: Front Clearance 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. 1 ULTRASONIC SENSOR
- Remove the No. 1 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. 1 ULTRASONIC SENSOR)
- Disconnect the C9 connector from the clearance warning ECU.
- Disconnect the U1 connector from the No. 1 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
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 ...
Front Clearance 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:
Reassembly
1. INSTALL LH REAR BUMPER SIDE RETAINER
Install the LH rear bumper side retainer with the 3
screws.
2. INSTALL RH REAR BUMPER SIDE RETAINER
Install the RH rear bumper side retainer with the 3
screws.
3. INSTALL REAR BUMPER REINFORCEMENT SUBASSEMBLY
Install the rear bumper reinf ...
Body
GENERAL MAINTENANCE
1. TIGHTEN BOLTS AND NUTS ON CHASSIS AND
BODY
(a) Tighten all the parts of the chassis when necessary.
Steering system
Drive train
Suspension
Brake system
Engine mounting, etc.
(b) Tighten all the parts of the body when necessary.
Seat belts
Seats
Doors ...
Short to GND in Front Passenger Side Squib
2nd Step Circuit
DTC B1187/55 Short to GND in Front Passenger Side Squib
2nd Step Circuit
DESCRIPTION
The front passenger side squib 2nd step circuit consists of the center airbag
sensor assembly and the
front passenger airbag assembly.
The circuit instructs the SRS to deploy when deployment conditions are ...
