Great Wall service chassis and body Manual — part 68
BE-1
Body Electric System
Protective box Location and content . . . . . . . BE-6
Power Supply System . . . . . . . . . . . . .. BE-16
Starting System . . . . . . . . . . . . . . . BE-17
Lighting System . . . . . . . . . . . . . . ... BE-19
Combination Instrument . . . . . . . . . . . ... BE-32
Backup Radar System . . . . . . . . . . . . . BE-39
Wiping and Washing System . . . . . . . . . ... BE-40
Central control lock and Power regulator System . . . BE-50
Acoustical Equipment System . . . . . . . . . . BE-61
Wire Harness Arrangement. . . . . . . . . . .. BE-68
BE
Page
BE-2
Brief Introduction
1. Power supply system
The power supply system includes accumulator, generator and its adjustor. Generator is the main power supply; the
accumulator is the auxiliary power supply. The generator, parallel with the accumulator, is equipped with the
adjustor, which is used to maintain the voltage of generator stable when the rotating velocity and the load varies.
2. Starting System
Which includes the direct current motor, drive mechanism and control device, etc. its performance is to start the
engine.
3. Lighting system
Which includes various lighting lamps inside and outside of the body and their control device; they are used mainly
to guarantee safety driving in night.
4. Alarming System
Which includes the electric horn, flasher and various service signal indicating lamps, etc. they are mainly used to
guarantee the physical and driving safe when driving.
5. Auxiliary Electric Appliance System
It includes the electric wiper, air-conditioner, recorder and cigarette lighter, etc.
R
red
R/G
red
green
socket plugging element
plug plugging element
N
2
3
4
5
6
1
2
3
4
5
S
s o c k e t p l u g g i n g
element
plug plugging element
1.
The codes of sockets of socket plugging element are
complied from left to right.
2.
The codes of sockets of socket plugging element are
compiled from right to left.
Remark: all of plugging elements are watched from the in-
wiring direction.
3.
Comparison between plug and socket plugging elements
The plug and socket plugging elements are classified accord-
ing to their in-built socket shape.
(a)
All of plugging element are marked according to the
opening end and are locked at their tops.
(b)
When pulling the plugging element, pull the plugging
element itself instead of wire.
Remark: before pulling the plugging element, check the
plugging element that you want to disconnect first to verify
their classifications.
English letters for wiring colors code:
B =black Bl =blue R =red Br =brown
Lg =reseda V =purple G =green O =orange
W =white Gr =gray P =pink Y =yellow
First letter stands for the basic color, while the second for the
stripe color.
Body Electric System
Brief Introduction
BE-3
Body Electric System
Brief Introduction
pull up
pull up
press down
press down
Change of fuse and maxi-fuse
Remark: in case of exchanging the fuse or maxi-fuse, the fuse
or maxi-fuse with same rated current should be used.
Notice:
1.
Before exchanging the fuse or maxi-fuse, all electric
appliances and ignition switches should be turned off
firstly. And the rated current of fuse or maxi-fuse should
not be exceeded.
2.
When disassembling or assembling the fuse, the
disassembly and assembly tools must be used. And they
must be pulled out or plugged in vertically. No bend is
allowed because the bend will make the connecting
terminals depart away, and thus poor connection will
occur. In case the fuse or maxi-fuse is burned, it shows
there is short circuit. In such situation, the systematic
inspection should be conducted by the qualified
technician.
Remark: the disassembly and assembly tools are put on the
protective box cover.
same rated current
10A
10A
BE-4
How to make systematic inspection
The inspection order is a simple troubleshooting approach, which is used to check and diagnose the failure on vehicle
when there is part (wiring and plugging elements excluded) failure in the systematic operation or presupposed
system.
Following items should be considered firstly when checking the failure.
wiring failure
open circuit or short circuit of electric wiring
failure in plugging element connection or terminal connection
failure of fuse or maxi-fuse
Notice:
1.
The inspection is conducted on vehicle when the system is in operation, therefore, security should be
taken into account when checking.
2.
Care should be paid not to make short circuit in the system under the condition that the accumulator is
directly connected, and the applicable voltage should be selected correctly.
Voltage inspection
(a)
Verify the voltage situation at the inspection spots.
For example:
Put the ignition switch atON position
Put the ignition switch and SW1 at ONposition;
Put the ignition switch of SW, SW1 and the relay at
ON position (SW2 at OFF position)
(b)
Connect the cathode lead (-) to the normal grounding
place or the cathode terminal of accumulator with the
voltmeter; while connecting the positive lead (+) to the
plugging element or part terminal. Such inspection can
be conducted with the test bubble instead of voltmeter.
Inspection on Conductance and Resistance
(a)
Disconnect the terminal or wire of accumulator to guar-
antee there is no voltage between the inspection sports.
(b)
Connect the two measuring leads of ohmn meter with the
inspection spots.
ohmn meter
SW
SW2
electromagnetic coil
relay
SW1
fuse
IG terminal connected to ignigtion
switch of SW
12
0
0
V
Body Electric System
Brief Introduction
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст