CTYON 2006.03
8790-01
CIRCUIT
(3) TROUBLESHOOTING OF SENSOR
When the power is applied (gear selector lever is in “R” position), the sensor will be
diagnosed once.
If found any failure due to open circuit to sensor or communication error, warning buzze
sounds for 3 seconds and the data on failed sensor transmits to the instrument panel to light
up the corresponding LED.
If normal, the warning buzzer sounds only for 65 ms.
Whenever the power is applied, the diagnosis mode is initiated.
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Sensor failure conditions (conditions for warning beep due to failure)
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Sensor failure conditions (conditions for warning beep due to failure)
Open in sending circuit
Open in receiving circuit
Open in power circuit (+, -)
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WARNING BEEPS
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(4) THE PARKING AID SYSTEM WILL NOT WORK OR IMPROPERLY WORK
UNDER FOLLOWING CASES:
A. Certain obstacles that sensors can not detect
Wires, ropes, chains.
Cotton, sponge, clothes, snow that absorb ultrasonic waves.
Obstacles lower than the bumper. (ex. drain ditch or mud puddle)
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B. Not defective but improperly working
When the sensing portion is frozen. (operates normally after thawed)
When the sensing portion is covered by rain, water drops, snow or mud. (operates
normally after cleaned)
When receiving other ultrasonic signals (metal sound or air braking noises from heavy
commercial vehicles).
When a high-power radio is turned on.
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C. Narrowed sensing area
When the sensing portion is partially covered by snow or mud. (operates normally afte
cleaned)
Surrounding temperature of sensor is too high (approx. over 80 °C) or too low
(approx. below -30°C).
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D. Not defective but may occur improper working
When driving on the rough roads, gravel road, hill and grass.
When the bumper height is changed due to the heavy load.
When the sensing portion is frozen.
When the sensing portion is covered by rain, water drops, snow or mud.
When receiving other ultrasonic signals (metal sound or air braking noises from heavy
commercial vehicles).
When a high-power radio is turned on.
When some accessories are attached in detecting ranges
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