Toyota Sienna Service Manual: 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 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 U5 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
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 wave ...
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 wave ...
Other materials:
Engine Coolant Temperature / Intake Air Temperature
Correlation
DTC P011B Engine Coolant Temperature / Intake Air Temperature
Correlation
DESCRIPTION
The ECM calculates the difference between the readings of the coolant
temperature sensor and intake air
temperature sensor. If the difference is greater than 20C (68F), the ECM will
judge this as a malfunct ...
Speed sensor check (when using sst check wire)
(a) Check the speed sensor signal.
(1) Drive the vehicle straight forward. Drive the
vehicle at a speed of 45 km/h (28 mph) or higher
for several seconds and check that the ABS
warning light goes off.
HINT:
The signal check may not be completed if the
vehicle has its wheels spun or the stee ...
Adjustment
HINT:
If the malfunction does not disappear by following the
procedure in ADJUSTMENT and the rear No. 2 seat
assembly needs to be replaced, do not disassemble the rear
No. 2 seat assembly.
1. ADJUST FRONT LEG
HINT:
Perform the following procedure if the inner leg does not
lock.
P ...
