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ELECTRICAL
8.15.2 DIAGNOSTIC INFORMATION AND TROUBLESHOOTING PROCEDURES
CONDITION
POSSIBLE CAUSE
REFERENCE ITEM/CORRECTION
No acknowledge on IRVM when
reverse gear is engaged with
Ignition ON.
Check for IRVM display
connection with the controller.
1. Check the connection and rectify.
1. Faulty connection between the
controller and the IRVM display. 1. Check the connection and rectify.
2. No connection of reverse gear
input to the IRVM display.
2. Check the connection and rectify.
3.Function might be disabled
with the tester in the IRVM
display
3. Check the reverse parking system
enable / disable status in the IRVM.
Display using diagnostic tester and
enable the status.
4. Faulty sensor
4. Replace the sensor
When obstacle is present, IRVM
display shows blank screen.
5. Improper connection of
sensor.
5. Check for the connection, clean the
bumper with soft cloth and check for
the DTC
1. Faulty connection between the
controller and IRVM display.
1. Check the connection and rectify.
2.IRVMr faulty
2. Replace IRVM.
3.IRVM connections faulty
3.Check the connection and rectify
Values is displayed in the
screen but not clear
4.Controller faulty
4.Replace the controller
8.15.3 CAUTIONS WHILE USING REVESE PARKING SYSTEM WITH ULTRASONIC SENSOR:
NOTE:
This system is strictly a driver assistance device.
It is not a substitute of driver’s responsibility while
driving. Under no circumstances will the
manufacturer accept any responsibility or can be
held liable for any direct or indirect, incidental or
consequential damage caused by negligent use of
this system.
1.System performance is dependent on the
reflection angle of ultrasonic waves from the
obstacle.
2.System cannot guarantee the detection less
than 30 cm.
3.System cannot sense the obstacles like cotton,
wool, foam, textile or spongy surface which will
absorb ultrasonic waves easily.
4.System may give wrong signal on reversing
the vehicle on grasslands and bumpy roads.
5.System may give wrong signal by sensing the
ground when the bumper is tilted more than the
normal position or when the vehicle is heavily
overloaded.
6.System may give wrong indication when the
temperature of the obstacle is high as hot
surfaces reflect fewe
r
sound waves less than
cold surfaces.
7.System may give wrong signal if there is an
excessive increase in humidity as it increases
the sound speed (
max. by 2%)
as compared to
dry air.
8.System may give false alarm during the heavy
rain conditions, heavy wind conditions.
9.System will not sense the pot holes or the
trenches or drainages which are below the
ground level.
10.Sensor may give wrong signal if sensor is at
extreme temperatures: below -30˚Celsius or
above 80˚Celsius.
11.Clean the sensors properly and keep them free
from ice, dust, mud, water, chewing gum etc.
for proper working of the system.