Toyota RAV4 manuals

Toyota Sienna Service Manual: Precaution

1. NOTES FOR CLEARANCE SONAR SYSTEM

  1.  Under the following conditions, the sensor of the clearance sonar may not operate properly:
  1.  Foreign matter such as snow or mud gets on the sensor (the detection function will return to normal when the foreign matter is no longer present).
  2. The sensor is frozen (the detection function will return to normal if the temperature of the sensor rises).

HINT: Especially in cold weather, a malfunction warning may be indicated and the sensor may not be able to detect any obstacles due to a frozen sensor etc.

  1.  The detection range of the clearance sonar may be affected by the following conditions:
  1.  Foreign matter such as snow or mud gets on the sensor.
  2.  In excessively hot or excessively cold weather.
  1.  Under the following conditions, a parking sonar may produce erroneous detections:
  1.  Something that generates ultrasonic waves approaches. Example of these things include the horn of another vehicle, the sound produced by the engine of a motorcycle, or the sound produced by the air brakes of a large-sized vehicle.
  2.  The vehicle gets caught in a downpour, or something such as mud or water splashes on the vehicle's body.
  3.  The vehicle is largely tilted at a large angle.
  4.  Accessories that interfere with the system are mounted on the vehicle.
  5.  Foreign matter such as snow or mud gets on the sensor.
  6. Another vehicle with a similar clearance sonar system is nearby.
  7.  The vehicle is equipped with a towing hook.
  1.  The clearance sonar may not detect the following items:
  1.  Thin objects such as wire or rope.
  2.  Objects that absorb the ultrasonic wave such as cottons, snow, etc.
  3.  Objects with a sharp edge.
  4.  Short objects.
  5.  Objects with a part that projects upward a large distance.
  1. Other conditions:
  1.  The sensor does not detect an object that is lying just under the bumper. The sensor may also stop or intermittently detect objects lower than the sensor, or thin fence posts or pickets even they were previously detected.
  2.  The sensor may not be able to detect objects when the sensor gets too close to the objects.
  3.  The sensor may not operate properly if it has been subjected to a strong impact. An example would be if the sensor has been stuck with great force by an object.
Clearance sonar system
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Parts location
SYSTEM DIAGRAM ...

Other materials:

TS and CG Terminal Circuit
DESCRIPTION In the sensor check mode, a malfunction of the speed sensor that cannot be detected when the vehicle is stopped is detected while driving. Transition to the sensor check mode can be performed by connecting terminals TS and CG of the DLC3 and turning the ignition switch from off ...

DTC check / clear
1. CHECK DTC (USING INTELLIGENT TESTER)  Checking DTCs.  Connect the intelligent tester to the DLC3.  Turn the ignition switch ON.  Read DTCs by following the prompts on the tester screen. HINT: Refer to the intelligent tester operator's manual for furthe ...

Short in Driver Side Squib 2nd Step Circuit
DTC B1180/17 Short in Driver Side Squib 2nd Step Circuit DESCRIPTION The driver side squib 2nd step circuit consists of the center airbag sensor assembly, the spiral cable and the steering pad. The circuit instructs the SRS to deploy when deployment conditions are met. DTC B1180/17 is rec ...

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