Page 316 of 484

BE-38Body Electric SystemBackup Radar System
Inspection on Common Trouble
Failure Judgment Methods
No backup radar display (no
system start notification when
the reverse gear is engaged)Check whether the plugging elements of power supply
of back up radar control box are in well connection as
shown in drawing H in next page.(when the reverse
gear is engaged, touch the detector, if there is vibration,
which shows the detector is powered.
Check whether the wire harness of inner mirror in
electric room and that on the top of body are in well
connection as shown in the drawing A in next page
Check whether the wire harness of back up radar
control box is well connected with that of chassis
and that on the top of body.
Rotate the vehicle key to the ACC position and
engage the reverse gear, then measure to see whether
the back up power supply reaches to 12 V with the
multi-meter of 50 V of voltage, refer to the red
and black positions shown in the drawing in next
page.
If the voltage reaches 12 V, change the backup
radar control box in trial firstly, then the inner
mirror in electric room, finally change the roof
wire harness and the chassis.
No backup radar display (but
there is start notification when
the reverse gear is engaged)
remark: such trouble occur
under the blocking condition.Check whether the power supply of back up radar
is well located, see the red and position in the
drawing of next page.
Check and align the plugging element.Poor properties of ultrasonic wave
Change the ultrasonic detector heads.
Continuous back up radar red
lamp alarming (remark: there
is no obstacle within 0.5 m away
from the detector head)Check whether the detectors in the two circuit of
back up radar control box is well plugged, see the
marked positions F, G in the drawing of next page.
Check and well connect those plugging elements
Poor connection of the left/right ultrasonic detector head
Poor performance of back up radar control box.Check and well connect those plugging elements
Change the ultrasonic detector head
Change the back up radar control box.
Vehicle modelpc
Alarming by mistake
The rear standby tire is removedConduct the inspection operation for the rear
standby tire at the spacious place
fail to detect the obstacle
The detector head doesnt workChange the detector head
There is dirt on detector headClean the detector head
Rear standby tire inspection1. engage the reverse gear for five times repeatedly within ten seconds at the spacious place so that the red
lamp on the screen flash three times, the system will automatically remember the standby tire status.
2. When the body height varies or the stand by tire is opened, make a new inspection for the rear stand by
tire to ensure the backup radar in normal operation.
Seven section of lamp display
Column I1.49m-1.3m Column II1.29m-1.1m
Column III1.09m-0.9m Column IV0.89m-0.75m
Column V0.74m-0.6m column VI0.59m-0.45m
Column VII0.45m
Remark: the right and left LED display the direction and distance of obstacle respectively for driver
reference.If the voltage fails to reach 12 v, check the power
supply system of original vehicles large wires
to restore the voltage to 12 V.
Vehicle model SL SK
fail to detect the obstacle
Trouble description Repairing and treatment approaches
Page 339 of 484

BE-61
Acoustical equipment system
The devices in this series is the vehicle-equipped acoustical receiver and recorder whose function is realized through
the electronic tuner and CD recorder, therefore, it can receive the amplitude modulation, frequency modulation and
stereo broadcast and can record the CD disc, what??s more, it is with the advanced electric anti-quaking, strong capability
of error correction, fashionable blue LCD liquid crystal digital display, and four-way power output. The device in this
series also has the characteristics such as low distortion, large output power and good performance of anti-interference,
broad frequency range and sweet sound, etc.
Diagram of Acoustical equipment system
SF
fuse
ignition switch
ACC ON ST
side-window aerial
CD deviceloudspeaker
ignition switch CD plugging elementplugging elements of rear
loudspeaker of CD device
1 2 3 4 5
6 7 8 9 1012 34
56 78912
34 5 5
4
1 2
3 5 3
8
4
9
75
6
1
7
Note: For Dr the antenna is the rod type.
battery cigarette lighter left front
right frontleft rearright rear
from small lamp relay
2
amplifier
Body Electric SystemAcoustical Equipment System
Page 342 of 484
BE-64
Inspection on Common Trouble
k
v
kk
v
ON
OFF
blue screen
black screen
(a) Main engine cannot be opened
Ther is no action when pressing
the owerkey repeatedlyCheck whether the voltage of
ACC and storage cell reaches
12 VCheck the fuse in power wire
or the power supply of the
entire vehicle
Failure of main
engine
(b) No voice or image when broadcasting
NO CDCdisplayed on
screenRe-open the deviceCheck whether there is image
when backing upFailure of main
engine
Be normal after
returning
Check the converter box works
normally (whether the lamp is
light or not)Failure of converter
box
Failure of disc box
(c) There is no image when backing up
There is no image in
video cameraWhether the screen display
is blue screenFailure of video
camera
The backing up wire is not connected
well; reconnect it to the positive polar
of 12V of reverse gear
Body Electric SystemAcoustical Equipment System
Page 354 of 484

BE-76
1 connected to cab wire harness
2 connected to cab wire harness
3 connected to cab wire harness
4 left front loudspeaker
5 left door lamp
6 electric rocker
7 rocker switch
8 rocker switch
9 rocker switch
10 rocker switch
11 left front lock-out device
12 connected to cab wire harness
13 left rear loudspeaker
14 electric rocker
15 left rear lock-out device
16 rocker switch
17 left rear door lamp switch
18 highly-mounted stop lamp19 right rear door lamp switch
20 ceiling lamp
21 connected to cab wire harness
22 lamp for reading
23 car door display
24 temperature display
25 rocker switch
26 right rear lock-out device
27 electric rocker
28 right rear loudspeaker
29 connected to cab wire harness
30 rocker switch
31 right front lock-out device
32 electric rocker
33 right front loudspeaker
34 right door lamp
35 connected to cab wire harness
36 connected to cab wire harness
wire harness at left
rear door
wire harness at left
front doorroof wire harness wire harness at
right rear door
wire harness at right front door
1
2
34
510
6 789
111213
14151617 18
19
20
21 22
23
2425
26
27 28
29
30
31 32 33
34 35 36
SL SK
Wire harness at four doors and body roof
Body Electric SystemWire Harness Distribution
Page 355 of 484

BE-77
SY
Wire harness at right rear door is distributed in the same way as that at left front rear door.
1 connected to cab wire harness
2 connected to cab wire harness
3 connected to cab wire harness
4 left external electric rear vision mirror
5 left front loudspeaker
6 left door lamp
7 electric rocker
8 left front lock-out device
9 rear vision mirror switch
10 rocker switch
11 rocker switch
12 rocker switch
13 rocker switch
14 inhibitor switch
15 connected to cab wire harness
16 electric rocker17 left rear lock-out device
18 rocker switch
19 highly-mounted stop lamp
20 rear ceiling lamp
21 front ceiling lamp
22 lamp for reading
23 car door display
24 temperature display
25 connected to cab wire harness
26 connected to cab wire harness
27 right external electric rear vision mirror
28 right front loudspeaker
29 right door lamp
30 electric rocker
31 right front lock-out device
32 rocker switch wire harness at left front doorwire harness at left rear door
1
2
34
5
6
78V NM
11
12
13
1415
16
171819 20
21
23
22 2526
27
28
29
3031
roof wire harness wire harness at right front door
Wire harness at four doors and body roof (continued)
24 32
Body Electric SystemWire Harness Distribution
Page 356 of 484

BE-78
wire harness at left front door
Wire harness at right rear door is distributed in the same way as that at left rear door.
1 connected to cab wire harness
2 connected to cab wire harness
3 connected to cab wire harness
4 left external electric rear vision mirror
5 left front loudspeaker
6 left door lamp
7 electric rocker
8 left front lock-out device
9 rear vision mirror switch
10 rocker switch
11 connect to cab wire harness
12 electric rocker
13 left rear lock-out device
14 rocker switch
15 highly-mounted stop lamp16 bass speaker(top SY)
17 ceiling lamp
18 grounding wire(top SY)
19 lamp for reading
20 car door display
21 temperature display
22 connected to cab wire harness
23 connected to cab wire harness
24 right external electric rear vision mirror
25 right front loudspeaker
26 right door lamp
27 electric rocker
28 right front lock-out device
29 rocker switch
1
2
34
5
6
789 10
11
12
13141516 17
18 19
20
21 22
23
24
25
2627wire harness at right front door
roof wire harness
wire harness at left rear door
Top style SY SJ
Wire harness at four doors and body roof (continued)
2829
Body Electric SystemWire Harness Distribution