353 

 
No. 257 Reversing radar can’t work while reversing   

Malfunction Cause 

Solution 

Failure of switch for 
reversing light   

Replace reversing switch;   

Failure of sensor of 
reversing radar   

Check, repair or replace reversing sensor;   

Poor contact between 
harness and controller   

2) Check if connection between body harness and controller is reliable; 
if the connection is normal, slight vibration should be touched by hand 
on sensor. If not, check if the voltage of power supply for controller 
harness is normal.   

Poor contact between 
harness and display   

3) Check if connection between body harness and controller is reliable; 
if the connection is normal, all LEDs will be on for about 1s when power 
is on. If not, check if the voltage of power supply for controller harness is 
normal.  

Broken connecting 
harness between 
controller and display   

4) If display works normally when power is on and slight vibration has 
been touched on sensor connected to controller when reversing, but no 
reversing data are showed on display, the connection between display 
and controller should be checked for correct conducting; the break and 
short circuit test may be conducted with multi-meter.   

No display or 
alarm of 
reversing radar 
while reversing   

Broken reversing radar 
controller or display   

5) After inspections stated above, if there is still fault, it can be 
determined that controller or display is broken. External power supply 
mode can be used to check and determine the parts to be replaced.   

 

 

Reversing radar can’t work 

Check and 

Failure of switch for reversing light 

Failure of sensor of reversing radar 

Check and 

repair 

Poor contact between harness and display 

Broken connecting harness 
between controller and display 

Broken reversing radar controller or 
display 

Checking and 

Check and repair 

Replace 

Normal 

Abnormal

Normal 

Normal 

Normal 

Abnormal

Abnormal

Abnormal

Abnormal

 
 

 

 

354 

 

No. 258 Wrong information from the reversing radar   

Malfunction Cause 

Solution 

1) Sensor is installed 
incorrectly;  

1) Failed sensor is determined according to direction indicators of display 
(When obstacle is detected by two left sensors, left indicator is on; and right 
indicator is on per contra; when obstacle is detected by two middle sensors, 
both left and indicators are on.). Please adjust sensor promptly if inclined 
installation of sensor is inspected.   

2) Broken harness for 
sensor connecting   

2) The connected harness between sensors and controller should be checked 
for short circuit or break with multi-meter.   

Figures which don’t 
change according 
to the distance of 
obstacle are 
showed on display 
when reversing.   

 
3) broken sensor or 
controller  

3) After inspections stated above, if there is still fault, it can be determined that 
controller or sensors are broken. Corresponding sensor can be replaced by 
good one, if there is still fault, then it can be determined that controller is 
broken.  

 

 

Wrong information from 

Adjust 

Abnormal installation for sensor 

Short-circuit or break f connecting harness 
between controller and sensor 

Check, repair or replace 

Broken sensor or controller 

Replace

Normal 

Abnormal

Normal 

Short-circuit or break

Broken

 
 

 

 

355 

 
No. 259 Sunroof can’t move, including malfunction of automatic closing and anti-nip   

Malfunction Cause 

Solution 

 

Broken fuse   

Check if fuse is burnt-out; if so, replace it;   

Poor contact of switch   

Check switch for poor contact with multi-meter; if so, replace the switch;   

Disordered memory for 
control module   

Check if the sunroof has functions such as automatic shutting and 
jam-preventing; if not, power-off the sunroof, and power-on again after 30 s to 
reset;  

Malfunction of control 
module   

Check control module for burn-out; if so, the control module should be replace; 

Reverse connection   

Connect the harness again;   

Sunroof can’t 
move, including 
malfunction of 
automatic closing 
and anti-nip   

Malfunction of motor   

Check motor for normal working; if it’s abnormal, replace the motor;   

 

 

Sunroof in poor 
operation 

Fuse burnt 

Change fuse 

Disordered memory for control 
module 

Poor contact of switch 

Replace switch 

Power-off the sunroof, and power-on 
again after 30 s to reset 

Control module burnt

 

Replace control module 

Malfunction of motor 

Replace motor 

Normal 

Burnt 

Normal 

Normal 

Normal 

Broken 

Burnt   

Burnt   

 
 

 

 

356 

 
No. 260 Abnormal sound and vibration of sunroof while operating   

Malfunction Cause 

Solution 

 

Obstacle or blocking of sliding 
groove  

Check sliding groove for obstacle; if so, clear it and lubricate the sliding 
groove;  

Broken moving mechanism   

Dismantle the glass and slide and check moving mechanism manually for 
damage; if so, the moving mechanism should be replaced;   

Internal malfunction of motor   

Replace sunroof and motor assembly;   

Abnormal sound 
and vibration of 
sunroof while 
operating  

Distorted window frame   

Replace sunroof and motor assembly;   

 

 

Clearing impurity and lubricating 

Impurity or blocking of sliding 
groove 

Broken or blocking moving 
mechanism 

Replace moving 
mechanism 

Internal malfunction of motor 

Replace sunroof and 
motor assembly

Distorted window frame 

Replace sunroof and motor 
assembly;

 

Abnormal sound and vibration of sunroof 
while operating 

Normal 

Normal 

Normal 

With impurity 

Broken

Over-low

Distorted