ECU GREAT WALL PEGASUS 2006 User Guide

AC-6Air-Conditioning System
(Electric Circuit Diagram)
S
SL SK SJ
fuse
air-conditioning
request relay
connect with ECUfuseECU
^``lkpq
4
5
1
2
45 6
32
36 54
21
1
2 1
32
ignition switch speed adjusting module
air blower A/C SWITCH pressure switch
1 2 3 4
5 6 7 81 2 3
4 5 61 2 3
4 5 6
1
2 1
2 3 1
2
compressor
electromagnetic fan relay compressor relay
pressure switch fuse
fuse
electromagnetic fan
air-conditioning
request relay
A/Cswitch
blower
air-volume switch
speed-adjusting resistance
heat-sensitive resistance blower relay
charging indicating lamp
ignition switch
air-volume switch Electric circuit diagram of air-conditioning system (continued)
battery
ECU

AC-7Air-Conditioning System
(Electric Circuit Diagram)
compressor
compressor relay
fuse
rearignition switch
electromagnetic
cutoff valve
rear speed-adjusting
resistance temperature controller
rear wind-velocity switch
rear air-conditioning relay
air blower
electromagnetic fan relay
electromagnetic fan
air-conditioning request relay A/C switch
R ECU
pressure switch
speed-adjusting resistance
air
blower
blower relay
(electricity-connecting and
charging indicating lampair-conditioning
request relay
connect with ECU 2
1
312
3
3
3 22
1
1
44
44 1
1 2
23
35
5
56
6 6
4fuse1
1
1
1
1
1
1
1 22 2 22 22 23
3
3
3
3
3
3
3 4444 4 4
5
5
5
5 6
6
6
6 7
7 88
SY
STACC ON
rearignition
switchtemperature
controllerrear wind-
velocity switchrear speed-
adjusting resistancespeed-adjusting
resistanceair-volume
switchA/C switchignition switch
ignition switch
fuse heat-sensitive resistance
(air-volume
switch)
fuse
Electric circuit diagram of air-conditioning system (continued)
battery
ECU

AC-10Air-conditioning System - Troubleshooting
Troubleshooting
TroubleReparation approachesPage
Lack of cold airNon-pull-in performance of electromagnetic clutch:
(a) Break of ignition switch and fuse;
(b) Trouble of electromagnetic clutch;
(c) Trouble of A/C switch;
(d) Wiring or grounding trouble;
(e) Lack of refrigerant; and
(f) Trouble of pressure switch.
Abnormal operation of compressor:
(a) Looseness or break of driving belt;
(b) Compressor trouble;
Expansion valve trouble;
Systematic leakage;
Liquid tank fusible plug melting or filtering
screen blocking;
Non-work of air blower:
(a) Failure of A/C switch;
(b) Failure of air blower motor, and
(c) Wiring failure.Change the fuse and check to see whether
there is short circuit;
Check the electromagnetic clutch;
Check the A/C switch;
Repair it as requirement;
Check the refrigerant pressure;
Check the pressure switch;
Adjust or change the driving belt;
Check the compressor;
Check the expansion valve;
Conduct lubricating test for the system
Check the liquid tank;
Check the A/C switch;
Check the air blower motor;
Conduct reparation as requirement.
Inconsecutive
cold airElectromagnetic valve slip
Failure of expansion valve;
Wiring or connecting failure;
Over water content in systemCheck the electromagnetic clutch;
Check the expansion valve;
Make reparation as requirement.
Reclaim the water first, then exhaust the
system to vacuum and inflate in the refrigerant.
Cold air occurs in
high-speed conditionBlocking of radiating face of condenser;
Driving belt slip;
Compressor failure;
Insufficient or redundant refrigerant;
Air existing in systemCheck and wash the condenser
Check and change the driving belt;
Check the compressor;
Check the refrigerant quantity;
Vacuumize the system and inflate
the refrigerant;
Insufficient
cold airCondenser blocking;
Driving belt slip;
Electromagnetic clutch failure;
Compressor failure;
Expansion valve failure;
Insufficient or redundant refrigerant;
Air existing in system;
Redundant compressor lubricant;
Liquid tank blockCheck the condenser;
Check and change the driving belt;
Check the electromagnetic clutch;
Check the compressor;
Check the expansion valve;
Check the refrigerant quantity;
Reclaim the air, then vacuumize the sys-
tem and inflate the refrigerant;
Check the compressor lubricant quantity;
Check the liquid tank
Evaporator blocking or frosting
Air leakage in cooling device or air
pipeline;
Air inlet blocking;
Air blower motor failure;Clean the evaporator radiating rib
or filter;
Make reparation as requirement
Make reparation as requirement
Change the air blower motor.
Page AC-4 to 7
Page AC-12
Page AC-4 to 7
Page AC-11
Page AC-13
Page AC-12
Page AC-16
Page AC-14
Page AC-4 to 7
Page AC-12
Page AC-16
Page AC-4 to 7
Page AC-15
Page AC-12
Page AC-12
Page AC-12
Page AC-16
Page AC-11
Page AC-14
Page AC-18
Page AC-20
Possible causes
Page AC-15
Page AC-13
Page AC-12
Page AC-11
Under-speed cold air

B0-21
Disassembly of adhesive strip of body
collision avoidance
1. Tear down the ends of adhesive strip;
Loosen the ends of adhesive strip for 31 mm with the scraper.
2. Tear down the adhesive strip and clear away the adhe-
sive agent;
(a) Cut down the adhesive agent with knife and pull down the
adhesive strip;
(b) Clear away the adhesive agent with knife or abrasive
paper.
Remark: Do not reuse the adhesive strip that is disassembled.
Mount of adhesive strip of body collision
avoidance
1. Clean the mounting face of adhesive strip;
Scrape the feculence with cleaning materials.
2. Heat the adhesive strip;
Heat the new adhesive strip with heating lamp to the 30
60
.
Notice: do not overheat the adhesive strip and the
temperature should not higher than 80
.
3. Pull out the separation paper from the adhesive strip
surface;
Remark: notice should be taken not to let the feculence and
dust enter into when separating the separation paper.
4. Mount the adhesive strip along with the body pinching line.
Mount the adhesive strip along with the body pinching line as
shown in the drawing.
Remark: the convex and concave line of the adhesive strip
should be in consistent with the body pinching line.
Notice:
1. Heat the body and adhesive strip to the moderate
temperature;
2. Press the adhesive strip with thumb and exert
moderate pressure so as to ensure the mount is
fastening.
3. Do not wash the vehicle within 24 hours once the
mount is finished. Vehicle Body
Adhesive Strip On Body Collision Avoidance

B0-59Body
Safety Belt
Safety belt
1. Driving test (in the security place);
(a) Fix the safety belt of the front seat.
(b) Drive the vehicle at the speed of 16 km/h and brake it
suddenly;
(c) Check the safety belt, which should be lock tightly
without expansion.
Remark: it is required to tear down the mechanism
fittings of the safety belt to make the following static load
test at the security place, in addition, moderate inspection
for the new safety belt should be conducted before
mounting no matter when the new safety belt fittings is
needed to mount.
2. Static test

a) Tear down the lock-type expansion fittings;
(b) Tilt the expansion fittings slowly;
(c) Check the expansion of safety belt, which should be
pulled out when the tilt angle is no more than 15 but not
be pulled out when the tilt angle is more than 45
.
If the requirement is not met, change the safety belt fittings.
Two-point safety belt
(manually operated)
(a) Adjust the safety belt to the moderate length;
(b) Exert the stable load on the belt;
(c) Check whether the safety belt is elongated or not, in such
case, the belt should not be elongated.