Kia Carnival (2007 year). Manual — part 384

2007 > 2.7L V6 GASOLINE >

DESCRIPTION

When reversing, the driver is not easy to find objects in the blind spots and to determine the distance from the object.
In order to provide the driver safety and convenience, back warning system will operate upon shifting to "R" Ultrasonic
sensor will emit ultrasonic wave rearward and detect the reflected wave. Control unit will calculate distance to the
object using the sensor signal input and output buzzer alarm in three steps (first, second and third alarm).

ALARM RANGE

Upon detecting an object at each range out of 3 ranges as stated below within the operation range, it will generate
alarm.
First alarm : Object comes near to the sensor located at the rear of vehicle, within 81-120cm ± 15cm
Second alarm : Object comes near to the sensor located at the rear of vehicle, within 41-80cm ± 10cm
Third alarm : Object comes near to the sensor located at the rear of vehicle, within 40cm ± 10cm

a. Time tolerance of the above waveform : Time ± 10%

b. At nearer distance than 40cm, detection may not occur.

c. Alarm will be generated with vehicle reversing speed 10km/h or less.

For moving target, maximum operation speed shall be target approach speed of 10km/h.

d. When the vehicle or the target is moving, sequential alarm generation or effective alarm may be failed.

e. False alarm, or failure of the alarm to trigger may occur in the following conditions.

a. Irregular road surface, gravel road, reversing toward grass.

b. Horn, motor cycle engine noise, large vehicle air brake, or other object generating ultrasonic wave is near.

c. When a wireless transmitter is used near to the sensor.

d. Dirt on the sensor.

e. Sequential alarm may not occur due to the reversing speed or the target shape.

2007 > 2.7L V6 GASOLINE >

COMPONENT LOCATION

2007 > 2.7L V6 GASOLINE >

DIAGNOSIS

1. DIAGNOSIS

Turn the ignition switch ON, then shift the transaxle lever to 'R'. The Back Warning System is then checked.
If no trouble, it generates buzzer alarm sound for 0.3 seconds after 0.5 seconds from power approval. In case of
system failure, buzzer alarm is generated 3 times continuously with the interval of 0.3 seconds.

2. DIAGNOSIS MODE

Switch on diagnosis mode upon system failure.
In case of system failure, then it indicates the failed point as follows.

SENSOR CONNECTION CHECKING

Transmit ultrasonic wave to the sensors, boost input signal, and detect wave.
Waveform will be found, oscillating for a certain period of time.

1. Waveform for a normal sensor connection

2. Waveform for a failed sensor connection

Sensor connection will be checked for oscillating period of input signal 3V. If oscillating period is more than
0.8ms, it is normal.

a. Left sensor failure : beep-beep-beep

b. Right sensor failure : beep beep-beep beep-beep beep

c. Rear-right sensor failure : beep beep beep-beep beep beep-beep beep beep

d. Right side sensor failure : beep beep beep beep-beep beep beep beep-beep beep beep beep

WARNING

1. Range detected by back sensors is limited.

Watch back before reversing

2. There is a blind spot below the bumper. Low objects (for example boundary barrier) may be detected from minimum

1.5m away unable to detect at nearer.

3. Besides there are some materials unable to be detected even in detection range as follows.

(1) Needles, ropes, rods, or other thin objects.