Toyota Sienna Service Manual: Front Clearance Sonar Sensor LH Circuit

Toyota Sienna Service Manual / Park assist / monitoring / Clearance sonar system / Adjustment / 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

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

Standard resistance

2 CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU - NO. 1 ULTRASONIC SENSOR)

CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU - NO. 1 ULTRASONIC SENSOR)

Disconnect the C9 connector from the clearance warning ECU.

CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU - NO. 1 ULTRASONIC SENSOR)

Disconnect the U1 connector from the No. 1 ultrasonic sensor.
Measure the resistance according to the value(s) in the table below.

Standard resistance

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

Other materials:

Stowing the third seats (manual seats)
Before stowing or returning third seat, remove any items from the floor area to prevent interference with moving parts. Before stowing the third seats Lower the center head restraint to the lowest position , and stow the seat belt buckles. Stow the center seat belt. Stowing ...

Write vin
(a) The VIN writing process is shown in the flowchart below. This process allows the VIN to be input into the ECM. If the ECM is changed, or the ECM VIN and Vehicle VIN do not match, the VIN can be registered, or overwritten in the ECM by following this procedure. (b) Write VIN using the int ...

Fold Lock Switch Circuit
DESCRIPTION Each of the left and right seats has a fold lock switch that detects the lock condition of the seat legs and floor when the seat is in the stowed state. If the fold lock switch detects an unlock condition, the 3rd SEAT indicator on the combination meter will come on. WIRING DIAGR ...