ECU GREAT WALL DEER 2006 Service Manual

IN-3Introduction
How to Use This Manual
Introductionóhow to use this manual
The repairing approaches are described step by step:

The illustrations show you what to do and at which position.

The theme of repairing operation tell you what you need to do.

The detailed instruction show you how to accomplish the repairing and
introduce to you other related affairs, such as specification, warning etc.
Example:
Check and adjust the flange bounce
(a) Attach the dial indicator seat to the reducer housing, and touch the
flange face with the measuring head of dial indicator, run the flange
and observe the pendular range of the indicator carefully.
Full bounce tolerance of face : 0.10mm
Illustration:
what to do and at which positionSpecification
This formula can help the experienced technicians find out the failure
causes in short time. Overhauling staff can browse the operation theme
and refer to the detailed description thereunder where necessary; impor-
tant specifications and warnings are written out in boldface.
Specification
The corresponding specifications are given in boldface in each repairing
approach of this manual, which allows the overhauling staff to check the
specification while keeping on repairing work.
Warning, Notice and Remark

Warning written out in boldface means there is possibility of self-
injury or harm to others.

Notice written out in boldface means there is possibility of damage
to parts under repairing.

Remarks singled out independently, but not in boldface, serve as
supplementary descriptions to help you accomplish the work more
efficiently.
Vehicle Code
There are six vehicle models in this manual, the model codes are as follows:
Deer model
Dr
Sailor model
SL
SO COOL model
SK
Safe model
SF
Sing model
SY
PEGASUS model
SJ
Abbreviation used in this manual
A/C
air-conditioner
ECU
electronic controller unit
SST
special service tool
2WD
two-wheel drive
4WD
four-wheel drive
PMãã
Topic:what to do ?
Detailed introductionz;How to do?

IN-4
Overall Repairing Description
1. Keep the vehicle clean and prevent it from
damage with guard plate, seat and floor cover
cloth.
2. Put down the dismantled parts in order during
the dismantle process so as to facilitate the re-
assembly
3. Observe the following items:
a) Disconnect the cable cathode from the
accumulator terminal before the electric
operation;.
b) Disconnect the cable from the cathode
connected to the vehicle body when check-
ing or repairing the accumulator where
necessary.
c) In order to avoid the damage of terminal
post of accumulator, loose the bolts first,
then pull up the cable vertically when
dismantling, don
t wring it or prize it.
d) Clean the terminal posts of the accumula-
tor with dishcloth, and do not scrape them
with file or other similar tools to avoid
damage.e) Mount the cable terminal on the post with loosened nut, then
fasten the nut. donít tap the terminal onto the post with
hammer.
f) Be sure to check whether the cover of positive terminal (+) is
well located or not.
4. Check all hoses and wire plugs to verify whether they are
connected solidly and correctly.
5. Parts that cannot be reused after being used.
a) The following parts should be changed with new one regularly:
split pin, sealing washer, O-ring and oil seal, etc.
b) parts that cannot be reused after being used is marked with

 in the element figure.
6. Pre-coated parts
The pre-coated parts including the bolt and nut are coated with
locking seal glue in factory.
a) In case the pre-coated parts are moved due to its fastening,
loosening or other causes, they must be coated again with the
specified seal glue.
b) Coating procedure of pre-coated parts
1) Clear away the former seal glue from the screw thread of
the said parts.
2) Dry the parts with compressed air.
3) Coat the screw thread of the parts with the specified
locking seal glue.
c) The pre-coated parts are marked with the
 in element
figure.
7. When necessary, sealing agent or sealing ring to prevent the
leakage.
8. Each specification shall be followed strictly. And the torque
spanners should be used.
9. Determine the necessity of using the special service tools (SST)
or special service materials (SSM) according to the real situation.
SST and SSM must be used where necessary and the repairing
should be in accordance with the repairing approach. SST list
and SSM list are attached to this manual.
10. Be sure to check whether the rated current of the new fuse is
correct when changing the fuse. The fuse rated current should
not larger than that of securing fitting and the fuse of smaller
rated current must not be used.
11. Be careful to hang or support the vehicle on the suitable place
when propping up or raising it.
a) In case prop up the vehicle at the front or back part, the wheels
must be blocked to guarantee the safety work. Introduction
Overall Repairing Rescription
tighten seal glue

IN-5
Body lifting height and supporting position
wrong correct
Introduction
Body Lifting Height and Supporting Position
Jack lifting position
...........................................................................................................
Front......the front the beam center
Rear.....rear differential
Supporting position

safety bracket .............................................................................................
front
123456
123456
123456
123456
123456
12345
12345
12345
12345
b) The raised vehicle must be supported with the bracket; it is
dangerous to conduct the repairing work on the vehicle propped
up with one jack, even though such repairing can be finished in
short time.
12. The following items shall be taken notice to avoid the parts damage:
a) Do not open the covers of ECU and various computers where not
necessary absolutely. (if the IC terminal is touched, it be leaded
into static damage) .
b) Pull the hose at its ends when dismantling it, do not pull it at the
center section.
c) Pull the wire joint instead of the wire when pulling the joint
away.
d) Take notice to avoid of the drop of electric parts such as the
sensors or repeaters. In case those parts drop to the hard ground,
they must be changed instead of being reused.
e) Do not use the striking spanner to dismantle or mount the
thermostatic switch or thermostatic sensor.
f) Plug the needles of the multi-meter into the wire connector
carefully when checking its conductance and do not bend the
terminals.
g) Do not sheath the hose of the vacuum gauge into the very large
connector when using the gauge, instead, the stage joint shall be
used because once the hose expands, it is possible to lead into
the leakage.

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-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-10Body Electric System
Protective Box Position Content
FuseVehicle
Model
1. Standby 30A
Standby 20A SJ
2. Standby 15A SY
Standby 10A SJ
3. Standby 10A SY SJ
4. Unload SY
Bass bubble 10A SJ
Power amplification 10 A top SY
5. Unload SY SJ
6. Unload SY SJ
7. Unload SY SJ
8. Air-conditioner 10A SY SJ
9. Charging 10A SY
Instrument 10A SJ
10. ECU 10A SY SJ
11. Back-up lamp 10A SY SJ
12. Cigarette lighter 30A SY SJ
receiver
13. Unload SY
Refrigerant 10A SJ top SY
14. Unload SY SJ
15. Steering electric window 10A SY
Humid display of steering 10A SJ
sindicating lamp
16. Stop lamp 10A SY SJ
17. Power aerial of inside lamp 10A SY SJ
18. Central control lock 20A SY SJ
19. Dual flasher 10A SY SJ
20. Front rain brush 10A SY SJ
21. Rear air-conditioner 15A SY
Unload SJ
22. Rear defroster 15A SY
Unload SJ
23. Rear rain brush 10A SY
Unload SJ
1Protective box I (continued)pv=pg
1
2
3
4
567
8
91011
12 13
14 15
16 17 18 19
20 21 22 23

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-72
pi=ph
1 grounding wire
2 wire harness at right front door
3 warm air motor
4 wire harness at right front door
5 control case of central control lock
6 heat-sensitive resistance
7 speed-adjusting resistance
8 connected to housing wire harness
9 connected to housing wire harness
10 A/C switch
11 air-volume switch
12 ashtray luminous lamp
13 ECU
14 receiver
15 rear loudspeaker
16 cigarette lighter
17 cigarette lighter grounding wire
18 cigarette lighter luminous lamp
19 fog lamp switch
20 dual flasher switch21 luminous lamp on air-conditioner panel
22 combined switch
23 instrument
24 instrument
25 stop lamp switch
26 connected to roof wire harness
27 connected to housing wire harness
28 connected to housing wire harness
29 connected to housing wire harness
30 connected to wire harness at left front door
31 connected to wire harness at left front door
32 connected to wire harness at left front door
33 protective box I
34 grounding wire
35 wire harness at left front door
36 connected to wire harness at left rear door
37 parking brake switch
38 connected to wire harness at right rear door
39 right front door lamp switch
40 connected to chassis wire harness
1
2
3
4
5
6
7
8
910
11
12
13 14
1516
17
18 19
20
21
2223
24
25
26
27
28
2930
31
32
33
343536 37 38
39
Cab Wire harness (continued)
40
Body Electric System
Wire Harness Distribution

BE-73
SY SJ
1 grounding wire
2 wire harness at right front door
3 warm air motor
4 connected to wire harness at right front door
5 control case of central control lock
6 electric aerial
7 heat-sensitive resistance
8 speed-adjusting resistance
9 connected to housing wire harness
10 connected to housing wire harness
11 A/C switch
12 air-volume switch
13 ashtray luminous lamp
14 grounding wire
15 ECU
16 CD device
17 CD device
18 cigarette lighter
19 cigarette lighter grounding wire
20 cigarette lighter luminous lamp
21 combined switch
22 fog lamp switch
23 dual flasher switch
24 rear defroster switch
25 rear brush switch
26 rear washer switch27 combination instrument
28 combination instrument
29 stop lamp switch
30 roof wire harness
31 connected to housing wire harness
32 connected to housing wire harness
33 connected to housing wire harness
34 connected to wire harness at left front door
35 connected to wire harness at left front door
36 connected to wire harness at left front door
37 protective box
38 rear defrost relay
39 connected to wire harness of rear air-conditioner
40 grounding wire
41 parking brake switch
42 connected to chassis wire harness
43 wire harness at right rear door
44 right front door lamp switch
45 right rear loudspeaker
46 rear washer motor
47 connected to wire harness at tail door
48 left front door lamp switch
49 wire harness at left rear door
50 left rear loudspeaker
51 standby power seat
1
2
3
4
5
6
7
8
9
101112
13
14
15
1617
181920
21 22232425262728
29
30
31
32
3334
35
36
37
38
39
4041 4243 444546
47
48495051
Cab wire harness (continued)
Body Electric System
Wire Harness Distribution