2006 GREAT WALL SO COOL relay

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 at
ON
position

Put the ignition switch and SW1 at
ON
position;

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

BE-5
If there is diode in the circuit, connect the two leads in reverse
polar and make another inspection. When the cathode lead (-)
is connected with the positive (+) side of diode, and the
positive (+) lead should be connected with the cathode (-) lead
of diode, the diode should conduct, while the two leads
connected to the reverse polar, the diode should not contact.
Remark: the specification may be not same due to different
testing meter types; therefore, the application instruction for
testing meter should be referred before the inspection.
Check the light emitting diode (LED) according to the same
approach for diode inspection.
Remark:
The testing meter should be used the one with 3V voltage or the
one has larger resistance than that in circuit.
If no suitable testing meter is applied, the voltage of accumu-
lator may be added to check the LED to see whether it is
lighted.
(c) Use the voltage or ohmn meter with high-impedance
(min voltage of 10 KV) to diagnose the failure in electric
circuit. Body Electric System
Brief Introduction0

0

K

K
ohmn meter
diode
0
0
K

K





ohmn
LED
digital type
analogue type


DCD
C
V
LG terminal of ignition switch
testing bubblefuse box
short circuit

SW1
short circuit

disconnection
electromagnetic
coil
short circuit

disconnection disconnectiong
Check to see whether there is short circuit
(a) Tear down the burned fuse and remove all loads from
the fuse.
(b) Connect the testing bubble at the fuse position;
(c) Verify the situation of testing bubble position:
For example:

Put the ignition switch of SW at
ON
position;

Put the ignition switch of SW and SW1 at
ON
position;

Put the ignition switch of SW, SW1 and Relay at

ON
position (which connects with the relay), and put
SW2 at
OFF
) position (or disconnect the SW2).
(d) Disconnect or re-connect the plugging elements when
observing the testing bubble. In case the testing bubble
keeps lighting, which shows there is short circuit between
the plugging elements; if the testing bubble extinguishes,
there is short circuit between the plugging elements.
(e) Shake the trouble wire alongside the body to locate the
SW2 electromagnetic
coil

BE-6
Position and content of protective box
Parts mounting Position
Body Electric System
Protective Box Position and Content
time-delay relayprotective box I
protective box III
horn relay
SL diesel
SY dieselpre-heating timer
SL diesel
SY diesel
flasher relay
protective box I
rear defrost relay SY
rear air-conditioning relay SY
SL SK SY SJ Dr SF

BE-7Body Electric System
Protective Box Position and Content
protective box II
preheating relay
diesel

air-conditioner relay
fuel pump relay
ECU relay
Parts Mounting Position (Continued)

BE-8Body Electric System
Protective Box Position and Content
Content of Protective Box
1 protective box I
fuse
1.Small lamp 10A
2.Rain brus 20A
3.Ceiling lamp 10A
4.(Cigarette lighter) 15A
5.Back -u 15A
6.Brake 10A
7.electric window 30A
8.Instrument 10A
fuel delivery/break electromagnetic valve10A(diesel

9.Central control lock 15A Dr
A
B
C



1
2
3
456
789
SL SK
U
N
O
V
P
Q
R NM
NN
NO
S
T NP
NQ
FUSE
1. Protection 10A
2. Unload
3. Charging 10A
4. Back-up 10A
5. ECU 10A
6. Unload
7. Rain wiper 10A
8. Stop lamp 10A
9. Ceiling lamp 10A
10. Central control lock 15A
11. Dual flasher 10A
12. EC 10A
13. Fuel pump 10A
14. Cigarette lighter 15Arelay
A electric window relay
B. small lamp relay
C.(flasher)

(plugging elements of ceiling
lamp wire harness)

(plugging elements of wire
harness in engine room)

BE-9Body Electric System
Protective Box Position and Content
fuse relay
1. Small lamp 10A A. electromagnetic fan relay
2. Brake 5A B. lasher
3. Ceiling lamp 5A C. electromagnetic fan relay
4. Central control lock 15A D. small lamp relay
5. Electric rocker gear 30A E. electric window relay
6. Dual flasher 10A
7. Cigarette lighter 15A
8. Rear vision mirror 5A (1) plugging elements of ceiling lamp wire harness
9. Unload (2) plugging elements of wire harness at front left door
10. Acoustic device 15A (3)plugging elements of wire harness in engine room
11. Rear window 20A
12. Electromagnetic fan 10A
13. Instrument 5A
14. Back-up lamp 5A
15. Rain brush 10A
16. Steering 5A
17. Unload
18. Unload




A
B
C
E D
123 456
78 9 101112
13 14 15
16 1718
SF
Protective bos I (continued)

BE-12
Protective box II
Body Electric System
Protective Box Position and Content
Dr SF
Fuse Vehicle Relay vehicle
1. Front fog lamp 15A Dr A. electromagnetic fan relay Dr
Unload SF charging relay Dr diesel
2. Electromagnetic fan 15A Dr electric horn relay SF
ECU1 10A SF B. large lamp Dr SF
3. Large lamp 10A Dr C. frost relay Dr SF
Horn 15A SF
4. Horn 15A Dr
Lower beam 10A SF
5. ECU1 10A Dr (1) plugging elements of
wire harness in engine room Dr
Charging 10A Dr diesel none SF
Rear frost 5A SF (2) plugging elements of
wire harness in engine room Dr SF
6. Large lamp 10A Dr (3) plugging elements of
wire harness in engine room Dr SF
ECU2 10A SF
7. Rear frost 10A Dr
Upper beam 10A SF
8. ECU2 10A Dr
Preheating 10A Dr diesel
Front fog lamp 10A SF
9. Fuel pump 10A Dr SF
Unload Dr diesel





A
B
C 12 3
45 6
78 9

BE-13Body Electric System
Protective Box Position and Content
Protective box II (continued)
Fuse Vehicle Relay Vehicle
1. Standby 10A SL SK A.electromagnetic fan relay SL SK
2. Standby 10A SL SK small lamp relay (SL diesel)
3. Standby 30A SL SK B.electric window relay SL SK
20A (SL diesel) cold start relay (SL diesel)
4. Rear fog lamp 10A SL SK C.frost relay SL SKLeft
large lamp 10A (SL diesel) charging relay) (SL diesel)
5. Front fog lamp 10A SL SK D.blower relay) SL SK
Right large lamp 10A (SL diesel) thermostatic relay (SL diesel)
6. Small lamp 10A SL SK E.small lamp relay SL SK
Air-conditioner 10A (SL diesel) heating relay (SL diesel)
7. Electric horn 10A SL SK F.large lamp relay SL SK
Warm air 20A (SL diesel) G.air-conditioner relay SL SK
8. Electric window 30A SL SK frost relay (SL diesel)
Unloa (SL diesel) H.rain-brusher intermissive relay SL SK
9. A/C 10A SL SK I.diod SL SK
Charging 10A (SL diesel)
10. Air blower 30A SL SK
Electric horn 10A (SL diesel)
11. Electronic fan 10A SL SK
Dual flasher 10A (SL diesel)
12. Right large lamp 10A SL SK
Unload (SL diesel)
13. Left large lamp 10A SL SK
Fog lamp 10A (SL diesel)
14. 60A fuse SL SK
15. 60A fuse SL SK
16. 30A fuse SL SK
17. 30A fuse SL SK
Unload SL diesel
123
H4567
14
15
GEFCD AB 8 9 10 11 12 13
SL SK
17
16
I